/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 14:54:27,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 14:54:27,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 14:54:27,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 14:54:27,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 14:54:27,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 14:54:27,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 14:54:27,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 14:54:27,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 14:54:27,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 14:54:27,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 14:54:27,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 14:54:27,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 14:54:27,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 14:54:27,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 14:54:27,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 14:54:27,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 14:54:27,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 14:54:27,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 14:54:27,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 14:54:27,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 14:54:27,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 14:54:27,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 14:54:27,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 14:54:27,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 14:54:27,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 14:54:27,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 14:54:27,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 14:54:27,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 14:54:27,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 14:54:27,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 14:54:27,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 14:54:27,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 14:54:27,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 14:54:27,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 14:54:27,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 14:54:27,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 14:54:27,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 14:54:27,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 14:54:27,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 14:54:27,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 14:54:27,442 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf [2020-04-18 14:54:27,462 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 14:54:27,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 14:54:27,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 14:54:27,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 14:54:27,465 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 14:54:27,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 14:54:27,466 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 14:54:27,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 14:54:27,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 14:54:27,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 14:54:27,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 14:54:27,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 14:54:27,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 14:54:27,468 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 14:54:27,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 14:54:27,468 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 14:54:27,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 14:54:27,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 14:54:27,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 14:54:27,469 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 14:54:27,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 14:54:27,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 14:54:27,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 14:54:27,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 14:54:27,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 14:54:27,470 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 14:54:27,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 14:54:27,470 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 14:54:27,471 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 14:54:27,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 14:54:27,472 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 14:54:27,754 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 14:54:27,767 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 14:54:27,770 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 14:54:27,772 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 14:54:27,772 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 14:54:27,773 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2020-04-18 14:54:27,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e9b21590/e98a716ea55e428e948b0033d9f5ba2f/FLAGc737d7b3e [2020-04-18 14:54:28,431 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 14:54:28,431 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2020-04-18 14:54:28,455 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e9b21590/e98a716ea55e428e948b0033d9f5ba2f/FLAGc737d7b3e [2020-04-18 14:54:28,693 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e9b21590/e98a716ea55e428e948b0033d9f5ba2f [2020-04-18 14:54:28,701 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 14:54:28,722 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 14:54:28,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 14:54:28,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 14:54:28,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 14:54:28,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:54:28" (1/1) ... [2020-04-18 14:54:28,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@297684a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:28, skipping insertion in model container [2020-04-18 14:54:28,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:54:28" (1/1) ... [2020-04-18 14:54:28,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 14:54:28,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 14:54:29,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 14:54:29,303 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 14:54:29,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 14:54:29,439 INFO L208 MainTranslator]: Completed translation [2020-04-18 14:54:29,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:29 WrapperNode [2020-04-18 14:54:29,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 14:54:29,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 14:54:29,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 14:54:29,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 14:54:29,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:29" (1/1) ... [2020-04-18 14:54:29,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:29" (1/1) ... [2020-04-18 14:54:29,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 14:54:29,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 14:54:29,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 14:54:29,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 14:54:29,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:29" (1/1) ... [2020-04-18 14:54:29,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:29" (1/1) ... [2020-04-18 14:54:29,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:29" (1/1) ... [2020-04-18 14:54:29,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:29" (1/1) ... [2020-04-18 14:54:29,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:29" (1/1) ... [2020-04-18 14:54:29,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:29" (1/1) ... [2020-04-18 14:54:29,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:29" (1/1) ... [2020-04-18 14:54:29,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 14:54:29,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 14:54:29,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 14:54:29,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 14:54:29,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-04-18 14:54:29,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 14:54:29,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 14:54:29,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 14:54:29,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 14:54:29,624 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 14:54:29,624 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 14:54:29,624 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 14:54:29,624 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 14:54:29,624 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 14:54:29,625 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 14:54:29,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 14:54:29,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 14:54:29,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 14:54:29,626 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 14:54:30,054 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 14:54:30,055 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 14:54:30,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:54:30 BoogieIcfgContainer [2020-04-18 14:54:30,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 14:54:30,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 14:54:30,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 14:54:30,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 14:54:30,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:54:28" (1/3) ... [2020-04-18 14:54:30,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4d2f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:54:30, skipping insertion in model container [2020-04-18 14:54:30,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:29" (2/3) ... [2020-04-18 14:54:30,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4d2f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:54:30, skipping insertion in model container [2020-04-18 14:54:30,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:54:30" (3/3) ... [2020-04-18 14:54:30,074 INFO L109 eAbstractionObserver]: Analyzing ICFG safe002_tso.opt.i [2020-04-18 14:54:30,085 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 14:54:30,085 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 14:54:30,093 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 14:54:30,094 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 14:54:30,119 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,119 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,120 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,120 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,121 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,121 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,121 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,122 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,122 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,122 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,123 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,123 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,123 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,124 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,124 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,124 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,125 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,125 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,129 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,130 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,130 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,130 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,136 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,137 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,137 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,138 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,140 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,140 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,141 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,141 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:54:30,156 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 14:54:30,174 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 14:54:30,174 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 14:54:30,174 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 14:54:30,174 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 14:54:30,174 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 14:54:30,175 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 14:54:30,175 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 14:54:30,175 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 14:54:30,191 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 14:54:30,193 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 14:54:30,241 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 14:54:30,241 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 14:54:30,246 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. [2020-04-18 14:54:30,249 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 14:54:30,271 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 14:54:30,271 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 14:54:30,272 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. [2020-04-18 14:54:30,274 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 14:54:30,276 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 14:54:31,700 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 14:54:31,883 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-04-18 14:54:31,925 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-04-18 14:54:31,925 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-18 14:54:31,929 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 14:54:31,954 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 14:54:31,956 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 14:54:31,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 14:54:31,965 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:54:31,966 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:54:31,966 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:54:31,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:31,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-04-18 14:54:31,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:54:31,981 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1029728612] [2020-04-18 14:54:31,997 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:32,008 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 14:54:32,010 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 14:54:32,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 14:54:32,010 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:54:32,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:32,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 2 times [2020-04-18 14:54:32,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:54:32,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898557459] [2020-04-18 14:54:32,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:54:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:54:32,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:54:32,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898557459] [2020-04-18 14:54:32,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:54:32,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 14:54:32,223 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:54:32,225 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:32,231 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 14:54:32,231 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:54:32,239 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:54:32,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:54:32,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:54:32,245 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 14:54:32,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:32,249 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 14:54:32,249 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 14:54:32,249 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:54:32,250 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1029728612] [2020-04-18 14:54:32,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:54:32,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 14:54:32,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1029728612] [2020-04-18 14:54:32,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 14:54:32,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:54:32,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:54:32,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:54:32,257 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 14:54:32,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:32,312 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 14:54:32,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 14:54:32,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 14:54:32,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:54:32,352 INFO L225 Difference]: With dead ends: 282 [2020-04-18 14:54:32,352 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 14:54:32,353 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:54:32,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 14:54:32,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 14:54:32,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 14:54:32,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 14:54:32,438 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 14:54:32,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:54:32,439 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 14:54:32,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 14:54:32,440 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 14:54:32,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 14:54:32,441 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:54:32,441 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:54:32,441 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:54:32,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:32,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-04-18 14:54:32,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:54:32,442 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [363670254] [2020-04-18 14:54:32,442 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:32,443 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 14:54:32,444 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 14:54:32,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 14:54:32,444 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:54:32,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:32,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 2 times [2020-04-18 14:54:32,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:54:32,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348050771] [2020-04-18 14:54:32,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:54:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:54:32,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:54:32,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348050771] [2020-04-18 14:54:32,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:54:32,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:54:32,553 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:54:32,553 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:32,555 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-04-18 14:54:32,555 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:54:32,564 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:54:32,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:54:32,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:54:32,565 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-04-18 14:54:32,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:32,575 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2020-04-18 14:54:32,575 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2020-04-18 14:54:32,575 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:54:32,575 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [363670254] [2020-04-18 14:54:32,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:54:32,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 14:54:32,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [363670254] [2020-04-18 14:54:32,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 14:54:32,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:54:32,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:54:32,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 14:54:32,577 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-18 14:54:32,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:32,605 INFO L93 Difference]: Finished difference Result 290 states and 762 transitions. [2020-04-18 14:54:32,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 14:54:32,605 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 14:54:32,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:54:32,607 INFO L225 Difference]: With dead ends: 290 [2020-04-18 14:54:32,607 INFO L226 Difference]: Without dead ends: 164 [2020-04-18 14:54:32,608 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 14:54:32,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-04-18 14:54:32,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-04-18 14:54:32,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-04-18 14:54:32,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 424 transitions. [2020-04-18 14:54:32,622 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 424 transitions. Word has length 9 [2020-04-18 14:54:32,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:54:32,622 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 424 transitions. [2020-04-18 14:54:32,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 14:54:32,622 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 424 transitions. [2020-04-18 14:54:32,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 14:54:32,624 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:54:32,624 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:54:32,624 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:54:32,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:32,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1379691760, now seen corresponding path program 1 times [2020-04-18 14:54:32,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:54:32,625 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [716923437] [2020-04-18 14:54:32,626 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:32,627 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 67 transitions. [2020-04-18 14:54:32,627 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-04-18 14:54:32,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 14:54:32,628 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:54:32,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:32,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1106664046, now seen corresponding path program 2 times [2020-04-18 14:54:32,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:54:32,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205169268] [2020-04-18 14:54:32,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:54:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:54:32,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:54:32,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205169268] [2020-04-18 14:54:32,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:54:32,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:54:32,696 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:54:32,698 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:32,700 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 44 transitions. [2020-04-18 14:54:32,700 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:54:32,710 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:54:32,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:54:32,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:54:32,711 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2020-04-18 14:54:32,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:32,730 INFO L93 Difference]: Finished difference Result 41 states and 71 transitions. [2020-04-18 14:54:32,731 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 71 transitions. [2020-04-18 14:54:32,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 14:54:32,731 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:54:32,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:32,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1379691760, now seen corresponding path program 3 times [2020-04-18 14:54:32,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:54:32,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094713055] [2020-04-18 14:54:32,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:54:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:54:32,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:54:32,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094713055] [2020-04-18 14:54:32,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:54:32,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:54:32,783 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:54:32,784 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:32,787 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 29 transitions. [2020-04-18 14:54:32,787 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:54:32,865 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 14:54:32,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 14:54:32,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 14:54:32,866 INFO L87 Difference]: Start difference. First operand 41 states and 71 transitions. Second operand 6 states. [2020-04-18 14:54:32,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:32,906 INFO L93 Difference]: Finished difference Result 44 states and 72 transitions. [2020-04-18 14:54:32,906 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 72 transitions. [2020-04-18 14:54:32,907 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:54:32,908 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [716923437] [2020-04-18 14:54:32,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:54:32,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 14:54:32,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [716923437] [2020-04-18 14:54:32,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 14:54:32,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:54:32,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 14:54:32,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-04-18 14:54:32,909 INFO L87 Difference]: Start difference. First operand 164 states and 424 transitions. Second operand 8 states. [2020-04-18 14:54:33,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:33,002 INFO L93 Difference]: Finished difference Result 244 states and 582 transitions. [2020-04-18 14:54:33,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 14:54:33,003 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-04-18 14:54:33,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:54:33,004 INFO L225 Difference]: With dead ends: 244 [2020-04-18 14:54:33,004 INFO L226 Difference]: Without dead ends: 128 [2020-04-18 14:54:33,005 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-04-18 14:54:33,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-04-18 14:54:33,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 116. [2020-04-18 14:54:33,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-04-18 14:54:33,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 268 transitions. [2020-04-18 14:54:33,023 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 268 transitions. Word has length 11 [2020-04-18 14:54:33,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:54:33,023 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 268 transitions. [2020-04-18 14:54:33,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 14:54:33,023 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 268 transitions. [2020-04-18 14:54:33,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 14:54:33,026 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:54:33,026 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:54:33,029 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:54:33,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:33,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-04-18 14:54:33,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:54:33,030 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1111045553] [2020-04-18 14:54:33,031 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:33,031 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 14:54:33,032 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 14:54:33,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 14:54:33,034 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:54:33,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:33,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1111108671, now seen corresponding path program 2 times [2020-04-18 14:54:33,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:54:33,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985713888] [2020-04-18 14:54:33,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:54:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:54:33,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:54:33,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985713888] [2020-04-18 14:54:33,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:54:33,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:54:33,132 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:54:33,134 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:33,137 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 30 transitions. [2020-04-18 14:54:33,137 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:54:33,150 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:54:33,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:54:33,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:54:33,151 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-04-18 14:54:33,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:33,166 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 14:54:33,166 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 14:54:33,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 14:54:33,167 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:54:33,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:33,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 3 times [2020-04-18 14:54:33,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:54:33,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878386291] [2020-04-18 14:54:33,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:54:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:54:33,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:54:33,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878386291] [2020-04-18 14:54:33,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:54:33,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:54:33,268 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:54:33,269 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:33,271 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 17 transitions. [2020-04-18 14:54:33,272 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:54:33,282 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:54:33,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:54:33,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 14:54:33,283 INFO L87 Difference]: Start difference. First operand 31 states and 49 transitions. Second operand 4 states. [2020-04-18 14:54:33,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:33,300 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 14:54:33,300 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 14:54:33,300 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:54:33,300 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1111045553] [2020-04-18 14:54:33,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:54:33,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 14:54:33,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1111045553] [2020-04-18 14:54:33,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 14:54:33,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:54:33,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 14:54:33,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 14:54:33,302 INFO L87 Difference]: Start difference. First operand 116 states and 268 transitions. Second operand 5 states. [2020-04-18 14:54:33,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:33,343 INFO L93 Difference]: Finished difference Result 140 states and 310 transitions. [2020-04-18 14:54:33,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 14:54:33,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 14:54:33,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:54:33,345 INFO L225 Difference]: With dead ends: 140 [2020-04-18 14:54:33,345 INFO L226 Difference]: Without dead ends: 68 [2020-04-18 14:54:33,345 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 14:54:33,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-04-18 14:54:33,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-04-18 14:54:33,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-04-18 14:54:33,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-04-18 14:54:33,359 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 11 [2020-04-18 14:54:33,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:54:33,359 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-04-18 14:54:33,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 14:54:33,360 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-04-18 14:54:33,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 14:54:33,361 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:54:33,361 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:54:33,361 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:54:33,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:33,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 1 times [2020-04-18 14:54:33,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:54:33,363 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [966281957] [2020-04-18 14:54:33,364 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:33,366 INFO L259 McrAutomatonBuilder]: Finished intersection with 72 states and 169 transitions. [2020-04-18 14:54:33,367 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-04-18 14:54:33,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 14:54:33,372 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:54:33,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:33,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1612262128, now seen corresponding path program 2 times [2020-04-18 14:54:33,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:54:33,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11824475] [2020-04-18 14:54:33,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:54:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:54:33,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:54:33,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11824475] [2020-04-18 14:54:33,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:54:33,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:54:33,422 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:54:33,423 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:33,427 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 73 transitions. [2020-04-18 14:54:33,428 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:54:33,435 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:54:33,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:54:33,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:54:33,436 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 4 states. [2020-04-18 14:54:33,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:33,457 INFO L93 Difference]: Finished difference Result 89 states and 193 transitions. [2020-04-18 14:54:33,457 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 193 transitions. [2020-04-18 14:54:33,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 14:54:33,458 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:54:33,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:33,459 INFO L82 PathProgramCache]: Analyzing trace with hash -132602240, now seen corresponding path program 3 times [2020-04-18 14:54:33,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:54:33,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433509729] [2020-04-18 14:54:33,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:54:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:54:33,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:54:33,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433509729] [2020-04-18 14:54:33,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:54:33,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:54:33,493 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:54:33,494 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:33,497 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 45 transitions. [2020-04-18 14:54:33,497 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:54:33,506 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:54:33,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:54:33,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 14:54:33,507 INFO L87 Difference]: Start difference. First operand 89 states and 193 transitions. Second operand 4 states. [2020-04-18 14:54:33,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:33,533 INFO L93 Difference]: Finished difference Result 107 states and 220 transitions. [2020-04-18 14:54:33,533 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 220 transitions. [2020-04-18 14:54:33,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 14:54:33,534 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 14:54:33,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:33,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1261556210, now seen corresponding path program 4 times [2020-04-18 14:54:33,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:54:33,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984638226] [2020-04-18 14:54:33,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:54:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:54:33,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:54:33,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984638226] [2020-04-18 14:54:33,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:54:33,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:54:33,593 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:54:33,594 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:33,599 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 40 transitions. [2020-04-18 14:54:33,600 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:54:33,683 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 14:54:33,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 14:54:33,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 14:54:33,684 INFO L87 Difference]: Start difference. First operand 107 states and 220 transitions. Second operand 6 states. [2020-04-18 14:54:33,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:33,737 INFO L93 Difference]: Finished difference Result 136 states and 245 transitions. [2020-04-18 14:54:33,738 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 245 transitions. [2020-04-18 14:54:33,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 14:54:33,738 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 14:54:33,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:33,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 5 times [2020-04-18 14:54:33,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:54:33,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295290666] [2020-04-18 14:54:33,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:54:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:54:33,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:54:33,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295290666] [2020-04-18 14:54:33,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:54:33,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:54:33,821 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:54:33,822 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:33,824 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-04-18 14:54:33,825 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:54:33,857 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 14:54:33,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:54:33,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-04-18 14:54:33,858 INFO L87 Difference]: Start difference. First operand 136 states and 245 transitions. Second operand 4 states. [2020-04-18 14:54:33,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:33,873 INFO L93 Difference]: Finished difference Result 136 states and 245 transitions. [2020-04-18 14:54:33,873 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 245 transitions. [2020-04-18 14:54:33,874 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:54:33,874 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [966281957] [2020-04-18 14:54:33,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:54:33,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 14:54:33,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [966281957] [2020-04-18 14:54:33,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 14:54:33,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:54:33,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 14:54:33,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-04-18 14:54:33,876 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 11 states. [2020-04-18 14:54:34,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:34,216 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-04-18 14:54:34,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 14:54:34,217 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-04-18 14:54:34,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:54:34,218 INFO L225 Difference]: With dead ends: 81 [2020-04-18 14:54:34,218 INFO L226 Difference]: Without dead ends: 59 [2020-04-18 14:54:34,219 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=595, Unknown=0, NotChecked=0, Total=756 [2020-04-18 14:54:34,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-04-18 14:54:34,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-04-18 14:54:34,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-04-18 14:54:34,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-04-18 14:54:34,223 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-04-18 14:54:34,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:54:34,223 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-04-18 14:54:34,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 14:54:34,224 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-04-18 14:54:34,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:54:34,224 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:54:34,224 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:54:34,225 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:54:34,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:34,225 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-04-18 14:54:34,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:54:34,226 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1570096415] [2020-04-18 14:54:34,226 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:34,228 INFO L259 McrAutomatonBuilder]: Finished intersection with 94 states and 230 transitions. [2020-04-18 14:54:34,229 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-04-18 14:54:34,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:54:34,229 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:54:34,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:34,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1559482212, now seen corresponding path program 2 times [2020-04-18 14:54:34,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:54:34,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889236475] [2020-04-18 14:54:34,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:54:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:54:34,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:54:34,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889236475] [2020-04-18 14:54:34,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:54:34,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:54:34,274 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:54:34,275 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:34,278 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 48 transitions. [2020-04-18 14:54:34,278 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:54:34,285 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:54:34,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:54:34,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:54:34,286 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 4 states. [2020-04-18 14:54:34,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:34,304 INFO L93 Difference]: Finished difference Result 122 states and 279 transitions. [2020-04-18 14:54:34,304 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 279 transitions. [2020-04-18 14:54:34,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:54:34,305 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:54:34,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:34,305 INFO L82 PathProgramCache]: Analyzing trace with hash 184298484, now seen corresponding path program 3 times [2020-04-18 14:54:34,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:54:34,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659686952] [2020-04-18 14:54:34,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:54:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:54:34,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:54:34,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659686952] [2020-04-18 14:54:34,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:54:34,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:54:34,335 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:54:34,336 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:34,339 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 27 transitions. [2020-04-18 14:54:34,339 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:54:34,346 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:54:34,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:54:34,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 14:54:34,347 INFO L87 Difference]: Start difference. First operand 122 states and 279 transitions. Second operand 4 states. [2020-04-18 14:54:34,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:34,367 INFO L93 Difference]: Finished difference Result 158 states and 351 transitions. [2020-04-18 14:54:34,367 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 351 transitions. [2020-04-18 14:54:34,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:54:34,368 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 14:54:34,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:34,369 INFO L82 PathProgramCache]: Analyzing trace with hash 419234372, now seen corresponding path program 4 times [2020-04-18 14:54:34,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:54:34,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933261181] [2020-04-18 14:54:34,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:54:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:54:34,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:54:34,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933261181] [2020-04-18 14:54:34,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:54:34,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:54:34,412 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:54:34,413 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:34,418 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 56 transitions. [2020-04-18 14:54:34,419 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:54:34,492 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 14:54:34,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 14:54:34,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 14:54:34,493 INFO L87 Difference]: Start difference. First operand 158 states and 351 transitions. Second operand 6 states. [2020-04-18 14:54:34,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:34,545 INFO L93 Difference]: Finished difference Result 216 states and 430 transitions. [2020-04-18 14:54:34,545 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 430 transitions. [2020-04-18 14:54:34,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:54:34,546 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 14:54:34,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:34,547 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 5 times [2020-04-18 14:54:34,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:54:34,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119814379] [2020-04-18 14:54:34,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:54:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:54:34,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:54:34,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119814379] [2020-04-18 14:54:34,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:54:34,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:54:34,612 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:54:34,614 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:34,618 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-04-18 14:54:34,618 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:54:34,725 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 14:54:34,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 14:54:34,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-04-18 14:54:34,726 INFO L87 Difference]: Start difference. First operand 216 states and 430 transitions. Second operand 6 states. [2020-04-18 14:54:34,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:34,776 INFO L93 Difference]: Finished difference Result 216 states and 430 transitions. [2020-04-18 14:54:34,776 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 430 transitions. [2020-04-18 14:54:34,777 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:54:34,778 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1570096415] [2020-04-18 14:54:34,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:54:34,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 14:54:34,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1570096415] [2020-04-18 14:54:34,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 14:54:34,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:54:34,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 14:54:34,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-04-18 14:54:34,780 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 13 states. [2020-04-18 14:54:35,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:35,089 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-04-18 14:54:35,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 14:54:35,090 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2020-04-18 14:54:35,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:54:35,090 INFO L225 Difference]: With dead ends: 60 [2020-04-18 14:54:35,091 INFO L226 Difference]: Without dead ends: 45 [2020-04-18 14:54:35,091 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=649, Unknown=0, NotChecked=0, Total=812 [2020-04-18 14:54:35,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-04-18 14:54:35,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-04-18 14:54:35,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-04-18 14:54:35,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-04-18 14:54:35,100 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-04-18 14:54:35,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:54:35,100 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-04-18 14:54:35,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 14:54:35,100 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-04-18 14:54:35,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 14:54:35,101 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:54:35,101 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:54:35,101 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:54:35,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:35,101 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-04-18 14:54:35,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:54:35,102 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1641353066] [2020-04-18 14:54:35,102 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:35,107 INFO L259 McrAutomatonBuilder]: Finished intersection with 118 states and 300 transitions. [2020-04-18 14:54:35,108 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-04-18 14:54:35,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 14:54:35,109 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:54:35,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:35,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1150340927, now seen corresponding path program 2 times [2020-04-18 14:54:35,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:54:35,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126279932] [2020-04-18 14:54:35,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:54:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:54:35,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:54:35,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126279932] [2020-04-18 14:54:35,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:54:35,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:54:35,139 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:54:35,140 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:35,144 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 49 transitions. [2020-04-18 14:54:35,144 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:54:35,152 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:54:35,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:54:35,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:54:35,153 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 4 states. [2020-04-18 14:54:35,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:35,173 INFO L93 Difference]: Finished difference Result 158 states and 378 transitions. [2020-04-18 14:54:35,173 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 378 transitions. [2020-04-18 14:54:35,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 14:54:35,174 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:54:35,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:35,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1469318319, now seen corresponding path program 3 times [2020-04-18 14:54:35,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:54:35,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037708072] [2020-04-18 14:54:35,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:54:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:54:35,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:54:35,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037708072] [2020-04-18 14:54:35,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:54:35,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:54:35,211 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:54:35,212 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:35,218 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 35 transitions. [2020-04-18 14:54:35,218 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:54:35,230 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:54:35,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:54:35,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 14:54:35,231 INFO L87 Difference]: Start difference. First operand 158 states and 378 transitions. Second operand 4 states. [2020-04-18 14:54:35,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:35,250 INFO L93 Difference]: Finished difference Result 212 states and 495 transitions. [2020-04-18 14:54:35,250 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 495 transitions. [2020-04-18 14:54:35,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 14:54:35,251 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 14:54:35,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:35,251 INFO L82 PathProgramCache]: Analyzing trace with hash 111367155, now seen corresponding path program 4 times [2020-04-18 14:54:35,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:54:35,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5725202] [2020-04-18 14:54:35,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:54:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:54:35,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:54:35,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5725202] [2020-04-18 14:54:35,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:54:35,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:54:35,292 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:54:35,294 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:35,298 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 48 transitions. [2020-04-18 14:54:35,298 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:54:35,360 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 14:54:35,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 14:54:35,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 14:54:35,361 INFO L87 Difference]: Start difference. First operand 212 states and 495 transitions. Second operand 6 states. [2020-04-18 14:54:35,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:35,425 INFO L93 Difference]: Finished difference Result 316 states and 677 transitions. [2020-04-18 14:54:35,425 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 677 transitions. [2020-04-18 14:54:35,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 14:54:35,426 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 14:54:35,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:35,427 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 5 times [2020-04-18 14:54:35,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:54:35,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185624621] [2020-04-18 14:54:35,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:54:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:54:35,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:54:35,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185624621] [2020-04-18 14:54:35,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:54:35,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 14:54:35,509 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:54:35,510 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:35,514 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-04-18 14:54:35,514 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:54:35,594 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 14:54:35,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 14:54:35,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-04-18 14:54:35,594 INFO L87 Difference]: Start difference. First operand 316 states and 677 transitions. Second operand 7 states. [2020-04-18 14:54:35,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:35,685 INFO L93 Difference]: Finished difference Result 316 states and 677 transitions. [2020-04-18 14:54:35,685 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 677 transitions. [2020-04-18 14:54:35,686 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:54:35,687 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1641353066] [2020-04-18 14:54:35,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:54:35,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 14:54:35,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1641353066] [2020-04-18 14:54:35,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 14:54:35,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:54:35,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 14:54:35,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-04-18 14:54:35,689 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 14 states. [2020-04-18 14:54:35,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:35,947 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-04-18 14:54:35,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 14:54:35,948 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-04-18 14:54:35,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:54:35,948 INFO L225 Difference]: With dead ends: 42 [2020-04-18 14:54:35,949 INFO L226 Difference]: Without dead ends: 36 [2020-04-18 14:54:35,949 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=654, Unknown=0, NotChecked=0, Total=812 [2020-04-18 14:54:35,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-18 14:54:35,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-18 14:54:35,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-18 14:54:35,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-18 14:54:35,952 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-04-18 14:54:35,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:54:35,952 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-18 14:54:35,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 14:54:35,952 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-18 14:54:35,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 14:54:35,953 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:54:35,953 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:54:35,953 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:54:35,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:35,954 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-04-18 14:54:35,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:54:35,954 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1911468762] [2020-04-18 14:54:35,955 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:35,958 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 14:54:35,960 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 14:54:35,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 14:54:35,962 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:54:35,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:35,962 INFO L82 PathProgramCache]: Analyzing trace with hash 219391538, now seen corresponding path program 2 times [2020-04-18 14:54:35,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:54:35,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868642537] [2020-04-18 14:54:35,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:54:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:54:35,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:54:35,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868642537] [2020-04-18 14:54:35,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:54:35,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:54:35,993 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:54:35,995 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:36,001 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 82 transitions. [2020-04-18 14:54:36,001 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:54:36,009 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:54:36,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:54:36,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:54:36,010 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 4 states. [2020-04-18 14:54:36,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:36,034 INFO L93 Difference]: Finished difference Result 354 states and 970 transitions. [2020-04-18 14:54:36,034 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 970 transitions. [2020-04-18 14:54:36,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 14:54:36,035 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:54:36,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:36,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1211011038, now seen corresponding path program 3 times [2020-04-18 14:54:36,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:54:36,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536065989] [2020-04-18 14:54:36,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:54:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:54:36,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:54:36,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536065989] [2020-04-18 14:54:36,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:54:36,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:54:36,066 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:54:36,068 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:36,071 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 46 transitions. [2020-04-18 14:54:36,071 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:54:36,079 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:54:36,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:54:36,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 14:54:36,079 INFO L87 Difference]: Start difference. First operand 354 states and 970 transitions. Second operand 4 states. [2020-04-18 14:54:36,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:36,098 INFO L93 Difference]: Finished difference Result 480 states and 1291 transitions. [2020-04-18 14:54:36,098 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1291 transitions. [2020-04-18 14:54:36,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 14:54:36,100 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 14:54:36,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:36,100 INFO L82 PathProgramCache]: Analyzing trace with hash -352122458, now seen corresponding path program 4 times [2020-04-18 14:54:36,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:54:36,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610706049] [2020-04-18 14:54:36,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:54:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:54:36,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:54:36,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610706049] [2020-04-18 14:54:36,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:54:36,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:54:36,130 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:54:36,131 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:36,135 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 74 transitions. [2020-04-18 14:54:36,136 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:54:36,187 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 14:54:36,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 14:54:36,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 14:54:36,188 INFO L87 Difference]: Start difference. First operand 480 states and 1291 transitions. Second operand 6 states. [2020-04-18 14:54:36,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:36,243 INFO L93 Difference]: Finished difference Result 744 states and 1881 transitions. [2020-04-18 14:54:36,243 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1881 transitions. [2020-04-18 14:54:36,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 14:54:36,245 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 14:54:36,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:36,246 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 5 times [2020-04-18 14:54:36,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:54:36,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113095709] [2020-04-18 14:54:36,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:54:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:54:36,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:54:36,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113095709] [2020-04-18 14:54:36,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:54:36,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:54:36,276 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:54:36,278 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:36,281 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 41 transitions. [2020-04-18 14:54:36,281 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:54:36,308 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 14:54:36,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:54:36,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-04-18 14:54:36,309 INFO L87 Difference]: Start difference. First operand 744 states and 1881 transitions. Second operand 4 states. [2020-04-18 14:54:36,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:36,332 INFO L93 Difference]: Finished difference Result 1080 states and 2575 transitions. [2020-04-18 14:54:36,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 2575 transitions. [2020-04-18 14:54:36,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 14:54:36,336 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 14:54:36,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:54:36,336 INFO L82 PathProgramCache]: Analyzing trace with hash -410995550, now seen corresponding path program 6 times [2020-04-18 14:54:36,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:54:36,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442225927] [2020-04-18 14:54:36,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:54:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:54:36,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:54:36,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442225927] [2020-04-18 14:54:36,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:54:36,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 14:54:36,398 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:54:36,433 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:54:36,437 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 39 transitions. [2020-04-18 14:54:36,437 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:54:36,535 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 14:54:36,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 14:54:36,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2020-04-18 14:54:36,536 INFO L87 Difference]: Start difference. First operand 1080 states and 2575 transitions. Second operand 7 states. [2020-04-18 14:54:36,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:36,715 INFO L93 Difference]: Finished difference Result 1104 states and 2588 transitions. [2020-04-18 14:54:36,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 2588 transitions. [2020-04-18 14:54:36,718 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:54:36,718 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1911468762] [2020-04-18 14:54:36,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:54:36,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 14:54:36,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1911468762] [2020-04-18 14:54:36,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 14:54:36,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:54:36,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 14:54:36,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2020-04-18 14:54:36,720 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 16 states. [2020-04-18 14:54:37,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:54:37,044 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-18 14:54:37,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 14:54:37,044 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 17 [2020-04-18 14:54:37,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:54:37,045 INFO L225 Difference]: With dead ends: 35 [2020-04-18 14:54:37,045 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 14:54:37,046 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=250, Invalid=1156, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 14:54:37,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 14:54:37,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 14:54:37,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 14:54:37,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 14:54:37,047 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 14:54:37,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:54:37,047 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 14:54:37,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 14:54:37,047 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 14:54:37,047 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:54:37,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:54:37 BasicIcfg [2020-04-18 14:54:37,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 14:54:37,052 INFO L168 Benchmark]: Toolchain (without parser) took 8349.67 ms. Allocated memory was 144.2 MB in the beginning and 311.4 MB in the end (delta: 167.2 MB). Free memory was 100.1 MB in the beginning and 186.4 MB in the end (delta: -86.3 MB). Peak memory consumption was 80.9 MB. Max. memory is 7.1 GB. [2020-04-18 14:54:37,052 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 14:54:37,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 716.79 ms. Allocated memory was 144.2 MB in the beginning and 202.9 MB in the end (delta: 58.7 MB). Free memory was 98.4 MB in the beginning and 160.0 MB in the end (delta: -61.6 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-18 14:54:37,053 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.33 ms. Allocated memory is still 202.9 MB. Free memory was 159.3 MB in the beginning and 157.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 14:54:37,054 INFO L168 Benchmark]: Boogie Preprocessor took 48.32 ms. Allocated memory is still 202.9 MB. Free memory was 157.2 MB in the beginning and 155.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 14:54:37,054 INFO L168 Benchmark]: RCFGBuilder took 508.03 ms. Allocated memory is still 202.9 MB. Free memory was 155.9 MB in the beginning and 133.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-18 14:54:37,055 INFO L168 Benchmark]: TraceAbstraction took 6986.73 ms. Allocated memory was 202.9 MB in the beginning and 311.4 MB in the end (delta: 108.5 MB). Free memory was 133.2 MB in the beginning and 186.4 MB in the end (delta: -53.3 MB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. [2020-04-18 14:54:37,058 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 716.79 ms. Allocated memory was 144.2 MB in the beginning and 202.9 MB in the end (delta: 58.7 MB). Free memory was 98.4 MB in the beginning and 160.0 MB in the end (delta: -61.6 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 63.33 ms. Allocated memory is still 202.9 MB. Free memory was 159.3 MB in the beginning and 157.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.32 ms. Allocated memory is still 202.9 MB. Free memory was 157.2 MB in the beginning and 155.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 508.03 ms. Allocated memory is still 202.9 MB. Free memory was 155.9 MB in the beginning and 133.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6986.73 ms. Allocated memory was 202.9 MB in the beginning and 311.4 MB in the end (delta: 108.5 MB). Free memory was 133.2 MB in the beginning and 186.4 MB in the end (delta: -53.3 MB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 655 VarBasedMoverChecksPositive, 25 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: 6.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 141 SDtfs, 266 SDslu, 445 SDs, 0 SdLazy, 539 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 447 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...