/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-ext/17_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:57:11,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:57:11,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:57:11,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:57:11,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:57:11,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:57:11,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:57:11,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:57:11,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:57:11,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:57:11,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:57:11,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:57:11,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:57:11,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:57:11,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:57:11,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:57:11,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:57:11,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:57:11,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:57:11,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:57:11,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:57:11,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:57:11,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:57:11,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:57:11,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:57:11,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:57:11,372 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:57:11,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:57:11,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:57:11,374 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:57:11,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:57:11,375 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:57:11,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:57:11,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:57:11,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:57:11,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:57:11,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:57:11,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:57:11,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:57:11,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:57:11,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:57:11,381 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 11:57:11,396 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:57:11,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:57:11,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:57:11,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:57:11,398 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:57:11,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:57:11,398 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:57:11,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:57:11,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:57:11,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:57:11,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:57:11,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:57:11,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:57:11,399 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:57:11,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:57:11,400 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:57:11,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:57:11,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:57:11,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:57:11,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:57:11,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:57:11,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:57:11,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:57:11,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:57:11,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:57:11,402 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:57:11,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:57:11,402 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 11:57:11,402 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:57:11,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:57:11,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:57:11,688 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:57:11,699 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:57:11,702 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:57:11,704 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:57:11,704 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:57:11,707 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i [2020-04-18 11:57:11,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1f4ced4f/0513c289688e4be2a7503c5a159bfcf1/FLAG6e169e142 [2020-04-18 11:57:12,388 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:57:12,389 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i [2020-04-18 11:57:12,408 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1f4ced4f/0513c289688e4be2a7503c5a159bfcf1/FLAG6e169e142 [2020-04-18 11:57:12,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1f4ced4f/0513c289688e4be2a7503c5a159bfcf1 [2020-04-18 11:57:12,699 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:57:12,722 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:57:12,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:57:12,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:57:12,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:57:12,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:57:12" (1/1) ... [2020-04-18 11:57:12,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16daf421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:57:12, skipping insertion in model container [2020-04-18 11:57:12,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:57:12" (1/1) ... [2020-04-18 11:57:12,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:57:12,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:57:13,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:57:13,336 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:57:13,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:57:13,464 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:57:13,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:57:13 WrapperNode [2020-04-18 11:57:13,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:57:13,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:57:13,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:57:13,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:57:13,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:57:13" (1/1) ... [2020-04-18 11:57:13,497 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:57:13" (1/1) ... [2020-04-18 11:57:13,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:57:13,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:57:13,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:57:13,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:57:13,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:57:13" (1/1) ... [2020-04-18 11:57:13,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:57:13" (1/1) ... [2020-04-18 11:57:13,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:57:13" (1/1) ... [2020-04-18 11:57:13,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:57:13" (1/1) ... [2020-04-18 11:57:13,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:57:13" (1/1) ... [2020-04-18 11:57:13,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:57:13" (1/1) ... [2020-04-18 11:57:13,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:57:13" (1/1) ... [2020-04-18 11:57:13,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:57:13,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:57:13,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:57:13,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:57:13,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:57:13" (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 11:57:13,615 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-18 11:57:13,615 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-18 11:57:13,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:57:13,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:57:13,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:57:13,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:57:13,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:57:13,618 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 11:57:14,006 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:57:14,006 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-04-18 11:57:14,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:57:14 BoogieIcfgContainer [2020-04-18 11:57:14,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:57:14,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:57:14,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:57:14,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:57:14,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:57:12" (1/3) ... [2020-04-18 11:57:14,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bbd336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:57:14, skipping insertion in model container [2020-04-18 11:57:14,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:57:13" (2/3) ... [2020-04-18 11:57:14,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bbd336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:57:14, skipping insertion in model container [2020-04-18 11:57:14,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:57:14" (3/3) ... [2020-04-18 11:57:14,018 INFO L109 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2020-04-18 11:57:14,027 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:57:14,027 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:57:14,033 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-04-18 11:57:14,034 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:57:14,056 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:57:14,056 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:57:14,057 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:57:14,058 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:57:14,058 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:57:14,058 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:57:14,064 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:57:14,065 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:57:14,065 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:57:14,065 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:57:14,085 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 11:57:14,101 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:57:14,102 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:57:14,102 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:57:14,102 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:57:14,102 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:57:14,103 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:57:14,103 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:57:14,103 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:57:14,117 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 82 transitions, 169 flow [2020-04-18 11:57:14,119 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 82 transitions, 169 flow [2020-04-18 11:57:14,159 INFO L129 PetriNetUnfolder]: 24/81 cut-off events. [2020-04-18 11:57:14,159 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:57:14,166 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 81 events. 24/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 134 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2020-04-18 11:57:14,173 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 82 transitions, 169 flow [2020-04-18 11:57:14,195 INFO L129 PetriNetUnfolder]: 24/81 cut-off events. [2020-04-18 11:57:14,196 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:57:14,197 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 81 events. 24/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 134 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2020-04-18 11:57:14,200 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2400 [2020-04-18 11:57:14,202 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 11:57:14,923 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4373 [2020-04-18 11:57:14,923 INFO L214 etLargeBlockEncoding]: Total number of compositions: 39 [2020-04-18 11:57:14,927 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 51 transitions, 107 flow [2020-04-18 11:57:14,947 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 227 states. [2020-04-18 11:57:14,949 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states. [2020-04-18 11:57:14,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:57:14,958 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:57:14,959 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:57:14,959 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:57:14,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:57:14,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1558311805, now seen corresponding path program 1 times [2020-04-18 11:57:14,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:57:14,974 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [576486887] [2020-04-18 11:57:14,990 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:57:15,002 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:57:15,004 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 11:57:15,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:57:15,005 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:57:15,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:57:15,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1558311805, now seen corresponding path program 2 times [2020-04-18 11:57:15,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:57:15,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606013065] [2020-04-18 11:57:15,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:57:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:57:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:57:15,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606013065] [2020-04-18 11:57:15,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:57:15,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:57:15,249 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:57:15,249 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:57:15,254 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:57:15,254 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:57:15,261 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:57:15,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:57:15,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:57:15,267 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 2 states. [2020-04-18 11:57:15,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:57:15,272 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 11:57:15,272 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 11:57:15,272 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:57:15,273 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [576486887] [2020-04-18 11:57:15,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:57:15,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:57:15,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [576486887] [2020-04-18 11:57:15,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 11:57:15,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:57:15,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:57:15,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:57:15,282 INFO L87 Difference]: Start difference. First operand 227 states. Second operand 2 states. [2020-04-18 11:57:15,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:57:15,307 INFO L93 Difference]: Finished difference Result 198 states and 534 transitions. [2020-04-18 11:57:15,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 11:57:15,308 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-04-18 11:57:15,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:57:15,330 INFO L225 Difference]: With dead ends: 198 [2020-04-18 11:57:15,330 INFO L226 Difference]: Without dead ends: 198 [2020-04-18 11:57:15,331 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:57:15,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-04-18 11:57:15,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-04-18 11:57:15,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-04-18 11:57:15,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 534 transitions. [2020-04-18 11:57:15,402 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 534 transitions. Word has length 9 [2020-04-18 11:57:15,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:57:15,403 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 534 transitions. [2020-04-18 11:57:15,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 11:57:15,403 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 534 transitions. [2020-04-18 11:57:15,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:57:15,404 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:57:15,405 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:57:15,406 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:57:15,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:57:15,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1031484476, now seen corresponding path program 1 times [2020-04-18 11:57:15,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:57:15,407 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1938249522] [2020-04-18 11:57:15,408 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:57:15,410 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 11:57:15,411 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 11:57:15,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:57:15,413 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:57:15,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:57:15,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1031484476, now seen corresponding path program 2 times [2020-04-18 11:57:15,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:57:15,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502627121] [2020-04-18 11:57:15,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:57:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:57:15,505 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 11:57:15,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502627121] [2020-04-18 11:57:15,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:57:15,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:57:15,507 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:57:15,507 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:57:15,508 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 11:57:15,509 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:57:15,515 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:57:15,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:57:15,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:57:15,516 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 11:57:15,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:57:15,520 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-04-18 11:57:15,520 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-04-18 11:57:15,520 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:57:15,521 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1938249522] [2020-04-18 11:57:15,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:57:15,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:57:15,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1938249522] [2020-04-18 11:57:15,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:57:15,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:57:15,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:57:15,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:57:15,523 INFO L87 Difference]: Start difference. First operand 198 states and 534 transitions. Second operand 3 states. [2020-04-18 11:57:15,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:57:15,556 INFO L93 Difference]: Finished difference Result 362 states and 979 transitions. [2020-04-18 11:57:15,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:57:15,556 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-18 11:57:15,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:57:15,561 INFO L225 Difference]: With dead ends: 362 [2020-04-18 11:57:15,561 INFO L226 Difference]: Without dead ends: 362 [2020-04-18 11:57:15,562 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 11:57:15,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-04-18 11:57:15,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 221. [2020-04-18 11:57:15,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-04-18 11:57:15,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 589 transitions. [2020-04-18 11:57:15,591 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 589 transitions. Word has length 11 [2020-04-18 11:57:15,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:57:15,592 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 589 transitions. [2020-04-18 11:57:15,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:57:15,592 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 589 transitions. [2020-04-18 11:57:15,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:57:15,593 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:57:15,594 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:57:15,594 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:57:15,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:57:15,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1746695160, now seen corresponding path program 1 times [2020-04-18 11:57:15,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:57:15,595 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [95531924] [2020-04-18 11:57:15,596 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:57:15,596 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 11:57:15,596 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 11:57:15,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:57:15,597 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:57:15,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:57:15,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1746695160, now seen corresponding path program 2 times [2020-04-18 11:57:15,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:57:15,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866291197] [2020-04-18 11:57:15,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:57:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:57:15,644 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 11:57:15,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866291197] [2020-04-18 11:57:15,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:57:15,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:57:15,647 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:57:15,647 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:57:15,648 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 11:57:15,648 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:57:15,658 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:57:15,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:57:15,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:57:15,659 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 11:57:15,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:57:15,661 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-04-18 11:57:15,662 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-04-18 11:57:15,662 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:57:15,663 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [95531924] [2020-04-18 11:57:15,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:57:15,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:57:15,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [95531924] [2020-04-18 11:57:15,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:57:15,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:57:15,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:57:15,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:57:15,665 INFO L87 Difference]: Start difference. First operand 221 states and 589 transitions. Second operand 3 states. [2020-04-18 11:57:15,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:57:15,693 INFO L93 Difference]: Finished difference Result 348 states and 934 transitions. [2020-04-18 11:57:15,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:57:15,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-18 11:57:15,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:57:15,698 INFO L225 Difference]: With dead ends: 348 [2020-04-18 11:57:15,699 INFO L226 Difference]: Without dead ends: 348 [2020-04-18 11:57:15,700 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 11:57:15,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-04-18 11:57:15,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 218. [2020-04-18 11:57:15,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 11:57:15,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 560 transitions. [2020-04-18 11:57:15,737 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 560 transitions. Word has length 11 [2020-04-18 11:57:15,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:57:15,737 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 560 transitions. [2020-04-18 11:57:15,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:57:15,738 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 560 transitions. [2020-04-18 11:57:15,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:57:15,744 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:57:15,744 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:57:15,744 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:57:15,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:57:15,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1652537164, now seen corresponding path program 1 times [2020-04-18 11:57:15,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:57:15,745 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [583617648] [2020-04-18 11:57:15,746 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:57:15,748 INFO L259 McrAutomatonBuilder]: Finished intersection with 92 states and 163 transitions. [2020-04-18 11:57:15,750 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-04-18 11:57:15,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:57:15,753 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:57:15,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:57:15,753 INFO L82 PathProgramCache]: Analyzing trace with hash 584133060, now seen corresponding path program 2 times [2020-04-18 11:57:15,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:57:15,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495446652] [2020-04-18 11:57:15,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:57:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:57:15,827 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 11:57:15,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495446652] [2020-04-18 11:57:15,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:57:15,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:57:15,829 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:57:15,830 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:57:15,833 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 64 transitions. [2020-04-18 11:57:15,833 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:57:15,839 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:57:15,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:57:15,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:57:15,840 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 3 states. [2020-04-18 11:57:15,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:57:15,847 INFO L93 Difference]: Finished difference Result 94 states and 164 transitions. [2020-04-18 11:57:15,847 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 164 transitions. [2020-04-18 11:57:15,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:57:15,848 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:57:15,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:57:15,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1652537164, now seen corresponding path program 3 times [2020-04-18 11:57:15,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:57:15,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425536354] [2020-04-18 11:57:15,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:57:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:57:15,891 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 11:57:15,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425536354] [2020-04-18 11:57:15,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:57:15,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:57:15,893 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:57:15,894 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:57:15,897 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 48 transitions. [2020-04-18 11:57:15,897 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:57:15,906 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:57:15,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:57:15,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:57:15,907 INFO L87 Difference]: Start difference. First operand 94 states and 164 transitions. Second operand 3 states. [2020-04-18 11:57:15,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:57:15,922 INFO L93 Difference]: Finished difference Result 120 states and 203 transitions. [2020-04-18 11:57:15,922 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 203 transitions. [2020-04-18 11:57:15,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:57:15,923 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:57:15,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:57:15,923 INFO L82 PathProgramCache]: Analyzing trace with hash 859472572, now seen corresponding path program 4 times [2020-04-18 11:57:15,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:57:15,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256835820] [2020-04-18 11:57:15,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:57:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:57:15,967 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 11:57:15,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256835820] [2020-04-18 11:57:15,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:57:15,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:57:15,969 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:57:15,970 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:57:15,972 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 34 transitions. [2020-04-18 11:57:15,972 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:57:15,986 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:57:15,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:57:15,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:57:15,987 INFO L87 Difference]: Start difference. First operand 120 states and 203 transitions. Second operand 3 states. [2020-04-18 11:57:16,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:57:16,003 INFO L93 Difference]: Finished difference Result 158 states and 264 transitions. [2020-04-18 11:57:16,003 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 264 transitions. [2020-04-18 11:57:16,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:57:16,004 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:57:16,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:57:16,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1436192428, now seen corresponding path program 5 times [2020-04-18 11:57:16,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:57:16,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826674639] [2020-04-18 11:57:16,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:57:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:57:16,047 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 11:57:16,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826674639] [2020-04-18 11:57:16,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:57:16,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:57:16,052 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:57:16,053 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:57:16,058 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 34 transitions. [2020-04-18 11:57:16,059 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:57:16,080 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:57:16,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:57:16,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:57:16,081 INFO L87 Difference]: Start difference. First operand 158 states and 264 transitions. Second operand 3 states. [2020-04-18 11:57:16,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:57:16,101 INFO L93 Difference]: Finished difference Result 216 states and 345 transitions. [2020-04-18 11:57:16,101 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 345 transitions. [2020-04-18 11:57:16,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:57:16,102 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:57:16,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:57:16,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1147134708, now seen corresponding path program 6 times [2020-04-18 11:57:16,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:57:16,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991675318] [2020-04-18 11:57:16,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:57:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:57:16,139 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 11:57:16,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991675318] [2020-04-18 11:57:16,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:57:16,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:57:16,140 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:57:16,142 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:57:16,144 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 46 transitions. [2020-04-18 11:57:16,162 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:57:16,187 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:57:16,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:57:16,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:57:16,190 INFO L87 Difference]: Start difference. First operand 216 states and 345 transitions. Second operand 4 states. [2020-04-18 11:57:16,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:57:16,227 INFO L93 Difference]: Finished difference Result 252 states and 405 transitions. [2020-04-18 11:57:16,227 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 405 transitions. [2020-04-18 11:57:16,228 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:57:16,229 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [583617648] [2020-04-18 11:57:16,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:57:16,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:57:16,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [583617648] [2020-04-18 11:57:16,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 11:57:16,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:57:16,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:57:16,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:57:16,230 INFO L87 Difference]: Start difference. First operand 218 states and 560 transitions. Second operand 8 states. [2020-04-18 11:57:16,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:57:16,829 INFO L93 Difference]: Finished difference Result 316 states and 742 transitions. [2020-04-18 11:57:16,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-18 11:57:16,830 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-04-18 11:57:16,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:57:16,830 INFO L225 Difference]: With dead ends: 316 [2020-04-18 11:57:16,830 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:57:16,831 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-04-18 11:57:16,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:57:16,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:57:16,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:57:16,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:57:16,832 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-04-18 11:57:16,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:57:16,832 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:57:16,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 11:57:16,833 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:57:16,833 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:57:16,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:57:16 BasicIcfg [2020-04-18 11:57:16,837 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:57:16,843 INFO L168 Benchmark]: Toolchain (without parser) took 4137.77 ms. Allocated memory was 143.7 MB in the beginning and 248.5 MB in the end (delta: 104.9 MB). Free memory was 100.8 MB in the beginning and 132.1 MB in the end (delta: -31.3 MB). Peak memory consumption was 73.6 MB. Max. memory is 7.1 GB. [2020-04-18 11:57:16,843 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 143.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 11:57:16,844 INFO L168 Benchmark]: CACSL2BoogieTranslator took 741.45 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 99.0 MB in the beginning and 158.9 MB in the end (delta: -60.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:57:16,845 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.91 ms. Allocated memory is still 201.3 MB. Free memory was 158.9 MB in the beginning and 156.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 11:57:16,848 INFO L168 Benchmark]: Boogie Preprocessor took 29.93 ms. Allocated memory is still 201.3 MB. Free memory was 156.9 MB in the beginning and 155.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 11:57:16,848 INFO L168 Benchmark]: RCFGBuilder took 460.20 ms. Allocated memory is still 201.3 MB. Free memory was 155.5 MB in the beginning and 133.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:57:16,849 INFO L168 Benchmark]: TraceAbstraction took 2825.58 ms. Allocated memory was 201.3 MB in the beginning and 248.5 MB in the end (delta: 47.2 MB). Free memory was 132.9 MB in the beginning and 132.1 MB in the end (delta: 740.1 kB). Peak memory consumption was 47.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:57:16,858 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 143.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 741.45 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 99.0 MB in the beginning and 158.9 MB in the end (delta: -60.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.91 ms. Allocated memory is still 201.3 MB. Free memory was 158.9 MB in the beginning and 156.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.93 ms. Allocated memory is still 201.3 MB. Free memory was 156.9 MB in the beginning and 155.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 460.20 ms. Allocated memory is still 201.3 MB. Free memory was 155.5 MB in the beginning and 133.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2825.58 ms. Allocated memory was 201.3 MB in the beginning and 248.5 MB in the end (delta: 47.2 MB). Free memory was 132.9 MB in the beginning and 132.1 MB in the end (delta: 740.1 kB). Peak memory consumption was 47.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 62 ProgramPointsBefore, 35 ProgramPointsAfterwards, 82 TransitionsBefore, 51 TransitionsAfterwards, 2400 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 1006 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 4373 CheckedPairsTotal, 39 TotalNumberOfCompositions - PositiveResult [Line: 687]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 705]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 59 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 305 SDtfs, 196 SDslu, 364 SDs, 0 SdLazy, 404 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=227occurred 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, 4 MinimizatonAttempts, 271 StatesRemovedByMinimization, 2 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...