/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_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 23:41:35,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 23:41:35,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 23:41:35,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 23:41:35,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 23:41:35,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 23:41:35,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 23:41:35,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 23:41:35,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 23:41:35,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 23:41:35,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 23:41:35,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 23:41:35,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 23:41:35,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 23:41:35,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 23:41:35,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 23:41:35,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 23:41:35,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 23:41:35,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 23:41:35,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 23:41:35,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 23:41:35,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 23:41:35,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 23:41:35,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 23:41:35,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-11 23:41:35,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 23:41:35,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 23:41:35,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 23:41:35,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 23:41:35,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 23:41:35,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 23:41:35,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 23:41:35,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 23:41:35,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 23:41:35,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 23:41:35,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 23:41:35,403 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 23:41:35,446 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 23:41:35,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 23:41:35,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 23:41:35,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 23:41:35,449 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 23:41:35,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 23:41:35,449 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 23:41:35,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 23:41:35,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 23:41:35,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 23:41:35,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 23:41:35,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 23:41:35,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 23:41:35,452 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 23:41:35,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 23:41:35,453 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 23:41:35,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 23:41:35,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 23:41:35,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 23:41:35,454 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 23:41:35,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 23:41:35,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:41:35,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 23:41:35,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 23:41:35,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 23:41:35,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 23:41:35,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 23:41:35,455 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 23:41:35,456 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 23:41:35,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 23:41:35,456 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 23:41:35,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 23:41:35,911 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 23:41:35,915 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 23:41:35,917 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 23:41:35,917 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 23:41:35,918 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2020-09-11 23:41:36,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aefc3039c/76a1b48b8a55458399181b75e6886d34/FLAGc87b0c107 [2020-09-11 23:41:36,652 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 23:41:36,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2020-09-11 23:41:36,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aefc3039c/76a1b48b8a55458399181b75e6886d34/FLAGc87b0c107 [2020-09-11 23:41:36,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aefc3039c/76a1b48b8a55458399181b75e6886d34 [2020-09-11 23:41:36,918 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 23:41:36,923 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 23:41:36,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 23:41:36,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 23:41:36,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 23:41:36,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:41:36" (1/1) ... [2020-09-11 23:41:36,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@620aac89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:36, skipping insertion in model container [2020-09-11 23:41:36,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:41:36" (1/1) ... [2020-09-11 23:41:36,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 23:41:37,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 23:41:37,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:41:37,565 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 23:41:37,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:41:37,710 INFO L208 MainTranslator]: Completed translation [2020-09-11 23:41:37,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:37 WrapperNode [2020-09-11 23:41:37,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 23:41:37,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 23:41:37,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 23:41:37,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 23:41:37,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:37" (1/1) ... [2020-09-11 23:41:37,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:37" (1/1) ... [2020-09-11 23:41:37,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 23:41:37,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 23:41:37,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 23:41:37,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 23:41:37,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:37" (1/1) ... [2020-09-11 23:41:37,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:37" (1/1) ... [2020-09-11 23:41:37,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:37" (1/1) ... [2020-09-11 23:41:37,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:37" (1/1) ... [2020-09-11 23:41:37,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:37" (1/1) ... [2020-09-11 23:41:37,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:37" (1/1) ... [2020-09-11 23:41:37,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:37" (1/1) ... [2020-09-11 23:41:37,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 23:41:37,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 23:41:37,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 23:41:37,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 23:41:37,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:37" (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 23:41:37,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 23:41:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 23:41:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 23:41:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 23:41:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 23:41:37,890 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 23:41:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 23:41:37,891 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 23:41:37,892 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 23:41:37,892 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 23:41:37,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 23:41:37,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 23:41:37,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 23:41:37,895 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 23:41:38,307 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 23:41:38,308 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 23:41:38,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:41:38 BoogieIcfgContainer [2020-09-11 23:41:38,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 23:41:38,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 23:41:38,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 23:41:38,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 23:41:38,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:41:36" (1/3) ... [2020-09-11 23:41:38,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f8c4508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:41:38, skipping insertion in model container [2020-09-11 23:41:38,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:37" (2/3) ... [2020-09-11 23:41:38,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f8c4508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:41:38, skipping insertion in model container [2020-09-11 23:41:38,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:41:38" (3/3) ... [2020-09-11 23:41:38,328 INFO L109 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2020-09-11 23:41:38,337 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 23:41:38,338 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 23:41:38,348 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 23:41:38,349 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 23:41:38,388 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,388 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,389 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,389 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,389 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,390 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,390 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,390 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,391 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,391 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,391 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,392 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,392 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,392 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,392 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,393 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,393 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,393 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,398 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,399 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,399 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,399 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,406 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,406 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,406 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,406 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,409 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,410 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,410 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,410 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:38,435 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 23:41:38,463 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 23:41:38,463 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 23:41:38,464 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 23:41:38,464 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 23:41:38,464 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 23:41:38,464 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 23:41:38,464 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 23:41:38,465 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 23:41:38,483 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-11 23:41:38,486 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 23:41:38,534 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 23:41:38,534 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:41:38,541 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 23:41:38,546 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 23:41:38,587 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 23:41:38,587 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:41:38,591 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 23:41:38,593 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-11 23:41:38,598 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 23:41:40,140 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-09-11 23:41:40,141 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-09-11 23:41:40,146 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-11 23:41:40,176 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-11 23:41:40,179 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-11 23:41:40,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 23:41:40,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:40,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:40,190 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:40,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:40,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-09-11 23:41:40,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:40,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220028219] [2020-09-11 23:41:40,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:40,476 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 23:41:40,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220028219] [2020-09-11 23:41:40,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:40,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:41:40,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1460185160] [2020-09-11 23:41:40,484 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:40,488 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:40,509 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-11 23:41:40,509 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:40,521 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:41:40,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:41:40,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:40,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:41:40,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:41:40,559 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-11 23:41:40,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:40,611 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-11 23:41:40,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:41:40,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 23:41:40,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:40,634 INFO L225 Difference]: With dead ends: 282 [2020-09-11 23:41:40,635 INFO L226 Difference]: Without dead ends: 218 [2020-09-11 23:41:40,637 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 23:41:40,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-11 23:41:40,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-11 23:41:40,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-11 23:41:40,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-11 23:41:40,715 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-11 23:41:40,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:40,717 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-11 23:41:40,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:41:40,717 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-11 23:41:40,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 23:41:40,718 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:40,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:40,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 23:41:40,719 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:40,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:40,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-09-11 23:41:40,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:40,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141797405] [2020-09-11 23:41:40,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:40,817 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 23:41:40,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141797405] [2020-09-11 23:41:40,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:40,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:41:40,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [365287081] [2020-09-11 23:41:40,818 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:40,819 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:40,822 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-11 23:41:40,822 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:40,875 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:41:40,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:41:40,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:40,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:41:40,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:41:40,878 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-09-11 23:41:40,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:40,907 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-09-11 23:41:40,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:41:40,908 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-11 23:41:40,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:40,909 INFO L225 Difference]: With dead ends: 242 [2020-09-11 23:41:40,910 INFO L226 Difference]: Without dead ends: 116 [2020-09-11 23:41:40,911 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 23:41:40,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-11 23:41:40,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-09-11 23:41:40,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-11 23:41:40,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 284 transitions. [2020-09-11 23:41:40,922 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 284 transitions. Word has length 9 [2020-09-11 23:41:40,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:40,923 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 284 transitions. [2020-09-11 23:41:40,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:41:40,923 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 284 transitions. [2020-09-11 23:41:40,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 23:41:40,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:40,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:40,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 23:41:40,925 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:40,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:40,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-09-11 23:41:40,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:40,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202543402] [2020-09-11 23:41:40,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:40,998 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 23:41:40,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202543402] [2020-09-11 23:41:40,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:40,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:41:40,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1628949733] [2020-09-11 23:41:41,001 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:41,003 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:41,005 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 17 transitions. [2020-09-11 23:41:41,005 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:41,023 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:41:41,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:41:41,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:41,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:41:41,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:41:41,025 INFO L87 Difference]: Start difference. First operand 116 states and 284 transitions. Second operand 3 states. [2020-09-11 23:41:41,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:41,043 INFO L93 Difference]: Finished difference Result 110 states and 265 transitions. [2020-09-11 23:41:41,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:41:41,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-11 23:41:41,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:41,045 INFO L225 Difference]: With dead ends: 110 [2020-09-11 23:41:41,046 INFO L226 Difference]: Without dead ends: 110 [2020-09-11 23:41:41,046 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 23:41:41,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-11 23:41:41,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-09-11 23:41:41,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-11 23:41:41,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 265 transitions. [2020-09-11 23:41:41,064 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 265 transitions. Word has length 11 [2020-09-11 23:41:41,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:41,064 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 265 transitions. [2020-09-11 23:41:41,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:41:41,065 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 265 transitions. [2020-09-11 23:41:41,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 23:41:41,067 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:41,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:41,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 23:41:41,068 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:41,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:41,068 INFO L82 PathProgramCache]: Analyzing trace with hash -142823170, now seen corresponding path program 1 times [2020-09-11 23:41:41,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:41,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234051813] [2020-09-11 23:41:41,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:41,198 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 23:41:41,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234051813] [2020-09-11 23:41:41,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:41,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:41:41,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [908836340] [2020-09-11 23:41:41,200 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:41,201 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:41,204 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-09-11 23:41:41,204 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:41,214 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:41:41,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:41:41,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:41,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:41:41,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:41:41,217 INFO L87 Difference]: Start difference. First operand 110 states and 265 transitions. Second operand 3 states. [2020-09-11 23:41:41,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:41,232 INFO L93 Difference]: Finished difference Result 104 states and 246 transitions. [2020-09-11 23:41:41,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:41:41,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-11 23:41:41,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:41,234 INFO L225 Difference]: With dead ends: 104 [2020-09-11 23:41:41,234 INFO L226 Difference]: Without dead ends: 104 [2020-09-11 23:41:41,235 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 23:41:41,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-11 23:41:41,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-11 23:41:41,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-11 23:41:41,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-09-11 23:41:41,243 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 12 [2020-09-11 23:41:41,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:41,243 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-09-11 23:41:41,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:41:41,243 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-09-11 23:41:41,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 23:41:41,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:41,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:41,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 23:41:41,245 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:41,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:41,246 INFO L82 PathProgramCache]: Analyzing trace with hash -132602240, now seen corresponding path program 1 times [2020-09-11 23:41:41,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:41,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963517912] [2020-09-11 23:41:41,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:41,329 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 23:41:41,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963517912] [2020-09-11 23:41:41,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:41,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:41:41,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1211498216] [2020-09-11 23:41:41,331 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:41,332 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:41,336 INFO L274 McrAutomatonBuilder]: Finished intersection with 25 states and 37 transitions. [2020-09-11 23:41:41,337 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:41,361 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:41:41,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:41:41,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:41,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:41:41,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:41:41,362 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 4 states. [2020-09-11 23:41:41,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:41,389 INFO L93 Difference]: Finished difference Result 158 states and 375 transitions. [2020-09-11 23:41:41,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:41:41,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-11 23:41:41,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:41,391 INFO L225 Difference]: With dead ends: 158 [2020-09-11 23:41:41,391 INFO L226 Difference]: Without dead ends: 104 [2020-09-11 23:41:41,391 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 23:41:41,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-11 23:41:41,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-11 23:41:41,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-11 23:41:41,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 244 transitions. [2020-09-11 23:41:41,398 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 244 transitions. Word has length 13 [2020-09-11 23:41:41,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:41,398 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 244 transitions. [2020-09-11 23:41:41,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:41:41,399 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 244 transitions. [2020-09-11 23:41:41,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 23:41:41,400 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:41,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:41,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 23:41:41,400 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:41,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:41,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 2 times [2020-09-11 23:41:41,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:41,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467707164] [2020-09-11 23:41:41,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:41,486 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 23:41:41,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467707164] [2020-09-11 23:41:41,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:41,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:41:41,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1196318100] [2020-09-11 23:41:41,488 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:41,489 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:41,492 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-09-11 23:41:41,493 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:41,543 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:41:41,563 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:41:41,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:41:41,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:41,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:41:41,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:41:41,564 INFO L87 Difference]: Start difference. First operand 104 states and 244 transitions. Second operand 4 states. [2020-09-11 23:41:41,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:41,600 INFO L93 Difference]: Finished difference Result 127 states and 275 transitions. [2020-09-11 23:41:41,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:41:41,601 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-11 23:41:41,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:41,602 INFO L225 Difference]: With dead ends: 127 [2020-09-11 23:41:41,602 INFO L226 Difference]: Without dead ends: 87 [2020-09-11 23:41:41,603 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 23:41:41,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-11 23:41:41,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-09-11 23:41:41,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-11 23:41:41,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 183 transitions. [2020-09-11 23:41:41,608 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 183 transitions. Word has length 13 [2020-09-11 23:41:41,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:41,608 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 183 transitions. [2020-09-11 23:41:41,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:41:41,609 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 183 transitions. [2020-09-11 23:41:41,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 23:41:41,610 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:41,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:41,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 23:41:41,610 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:41,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:41,611 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-09-11 23:41:41,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:41,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607689391] [2020-09-11 23:41:41,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:41,704 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 23:41:41,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607689391] [2020-09-11 23:41:41,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:41,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:41:41,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1499770620] [2020-09-11 23:41:41,705 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:41,707 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:41,714 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-09-11 23:41:41,714 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:41,792 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3211#(<= ~__unbuffered_cnt~0 0)] [2020-09-11 23:41:41,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 23:41:41,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:41,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 23:41:41,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 23:41:41,794 INFO L87 Difference]: Start difference. First operand 87 states and 183 transitions. Second operand 6 states. [2020-09-11 23:41:41,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:41,853 INFO L93 Difference]: Finished difference Result 90 states and 175 transitions. [2020-09-11 23:41:41,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 23:41:41,854 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-11 23:41:41,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:41,855 INFO L225 Difference]: With dead ends: 90 [2020-09-11 23:41:41,855 INFO L226 Difference]: Without dead ends: 65 [2020-09-11 23:41:41,855 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 23:41:41,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-11 23:41:41,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-11 23:41:41,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-11 23:41:41,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 119 transitions. [2020-09-11 23:41:41,859 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 119 transitions. Word has length 14 [2020-09-11 23:41:41,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:41,860 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 119 transitions. [2020-09-11 23:41:41,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 23:41:41,860 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 119 transitions. [2020-09-11 23:41:41,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 23:41:41,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:41,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:41,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 23:41:41,862 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:41,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:41,862 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-09-11 23:41:41,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:41,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799900811] [2020-09-11 23:41:41,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:41,938 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 23:41:41,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799900811] [2020-09-11 23:41:41,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:41,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 23:41:41,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1885023879] [2020-09-11 23:41:41,940 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:41,941 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:41,945 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-09-11 23:41:41,945 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:41,957 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:41:42,015 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3440#(<= ~__unbuffered_cnt~0 0)] [2020-09-11 23:41:42,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 23:41:42,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:42,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 23:41:42,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:41:42,016 INFO L87 Difference]: Start difference. First operand 65 states and 119 transitions. Second operand 7 states. [2020-09-11 23:41:42,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:42,065 INFO L93 Difference]: Finished difference Result 62 states and 111 transitions. [2020-09-11 23:41:42,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:41:42,066 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-11 23:41:42,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:42,067 INFO L225 Difference]: With dead ends: 62 [2020-09-11 23:41:42,067 INFO L226 Difference]: Without dead ends: 54 [2020-09-11 23:41:42,067 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 23:41:42,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-11 23:41:42,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-11 23:41:42,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-11 23:41:42,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-09-11 23:41:42,070 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 15 [2020-09-11 23:41:42,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:42,071 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-09-11 23:41:42,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 23:41:42,071 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-09-11 23:41:42,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:41:42,072 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:42,072 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 23:41:42,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 23:41:42,072 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:42,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:42,073 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-09-11 23:41:42,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:42,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280878271] [2020-09-11 23:41:42,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:42,125 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 23:41:42,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280878271] [2020-09-11 23:41:42,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:42,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:41:42,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [53915366] [2020-09-11 23:41:42,127 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:42,128 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:42,132 INFO L274 McrAutomatonBuilder]: Finished intersection with 30 states and 41 transitions. [2020-09-11 23:41:42,132 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:42,164 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:41:42,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:41:42,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:42,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:41:42,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:41:42,165 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 4 states. [2020-09-11 23:41:42,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:42,183 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2020-09-11 23:41:42,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:41:42,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:41:42,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:42,196 INFO L225 Difference]: With dead ends: 63 [2020-09-11 23:41:42,197 INFO L226 Difference]: Without dead ends: 35 [2020-09-11 23:41:42,197 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 23:41:42,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-11 23:41:42,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-11 23:41:42,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-11 23:41:42,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-09-11 23:41:42,199 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-09-11 23:41:42,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:42,200 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-09-11 23:41:42,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:41:42,200 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-09-11 23:41:42,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:41:42,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:42,201 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 23:41:42,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 23:41:42,201 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:42,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:42,202 INFO L82 PathProgramCache]: Analyzing trace with hash 361560856, now seen corresponding path program 2 times [2020-09-11 23:41:42,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:42,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462019258] [2020-09-11 23:41:42,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:42,250 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 23:41:42,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462019258] [2020-09-11 23:41:42,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:42,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:41:42,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [484935921] [2020-09-11 23:41:42,251 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:42,253 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:42,256 INFO L274 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-09-11 23:41:42,256 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:42,295 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:41:42,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:41:42,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:42,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:41:42,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:41:42,296 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-09-11 23:41:42,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:42,312 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2020-09-11 23:41:42,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:41:42,313 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:41:42,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:42,314 INFO L225 Difference]: With dead ends: 48 [2020-09-11 23:41:42,314 INFO L226 Difference]: Without dead ends: 30 [2020-09-11 23:41:42,314 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 23:41:42,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-11 23:41:42,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-11 23:41:42,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-11 23:41:42,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-09-11 23:41:42,316 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-09-11 23:41:42,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:42,316 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-09-11 23:41:42,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:41:42,317 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-09-11 23:41:42,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:41:42,317 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:42,317 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 23:41:42,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-11 23:41:42,324 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:42,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:42,324 INFO L82 PathProgramCache]: Analyzing trace with hash -550831814, now seen corresponding path program 3 times [2020-09-11 23:41:42,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:42,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299597796] [2020-09-11 23:41:42,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:42,382 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 23:41:42,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299597796] [2020-09-11 23:41:42,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:42,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:41:42,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1928442505] [2020-09-11 23:41:42,384 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:42,385 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:42,388 INFO L274 McrAutomatonBuilder]: Finished intersection with 24 states and 29 transitions. [2020-09-11 23:41:42,388 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:42,408 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:41:42,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:41:42,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:42,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:41:42,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:41:42,409 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-09-11 23:41:42,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:42,424 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-09-11 23:41:42,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:41:42,424 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:41:42,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:42,425 INFO L225 Difference]: With dead ends: 29 [2020-09-11 23:41:42,425 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 23:41:42,425 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 23:41:42,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 23:41:42,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 23:41:42,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 23:41:42,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 23:41:42,426 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-11 23:41:42,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:42,427 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 23:41:42,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:41:42,427 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 23:41:42,427 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 23:41:42,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-11 23:41:42,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 11:41:42 BasicIcfg [2020-09-11 23:41:42,432 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 23:41:42,436 INFO L168 Benchmark]: Toolchain (without parser) took 5515.10 ms. Allocated memory was 141.6 MB in the beginning and 277.9 MB in the end (delta: 136.3 MB). Free memory was 102.5 MB in the beginning and 212.4 MB in the end (delta: -109.9 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-09-11 23:41:42,437 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-11 23:41:42,438 INFO L168 Benchmark]: CACSL2BoogieTranslator took 787.59 ms. Allocated memory was 141.6 MB in the beginning and 206.0 MB in the end (delta: 64.5 MB). Free memory was 101.9 MB in the beginning and 164.2 MB in the end (delta: -62.3 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-09-11 23:41:42,438 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.14 ms. Allocated memory is still 206.0 MB. Free memory was 164.2 MB in the beginning and 162.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 23:41:42,439 INFO L168 Benchmark]: Boogie Preprocessor took 30.07 ms. Allocated memory is still 206.0 MB. Free memory was 162.2 MB in the beginning and 160.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-11 23:41:42,440 INFO L168 Benchmark]: RCFGBuilder took 507.50 ms. Allocated memory is still 206.0 MB. Free memory was 160.3 MB in the beginning and 138.1 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-11 23:41:42,441 INFO L168 Benchmark]: TraceAbstraction took 4114.12 ms. Allocated memory was 206.0 MB in the beginning and 277.9 MB in the end (delta: 71.8 MB). Free memory was 137.5 MB in the beginning and 212.4 MB in the end (delta: -74.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 23:41:42,445 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 787.59 ms. Allocated memory was 141.6 MB in the beginning and 206.0 MB in the end (delta: 64.5 MB). Free memory was 101.9 MB in the beginning and 164.2 MB in the end (delta: -62.3 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 67.14 ms. Allocated memory is still 206.0 MB. Free memory was 164.2 MB in the beginning and 162.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.07 ms. Allocated memory is still 206.0 MB. Free memory was 162.2 MB in the beginning and 160.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 507.50 ms. Allocated memory is still 206.0 MB. Free memory was 160.3 MB in the beginning and 138.1 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4114.12 ms. Allocated memory was 206.0 MB in the beginning and 277.9 MB in the end (delta: 71.8 MB). Free memory was 137.5 MB in the beginning and 212.4 MB in the end (delta: -74.9 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: 0.4s, 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, 0.1s 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, 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...