/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-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:49:03,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:49:03,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:49:03,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:49:03,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:49:03,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:49:03,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:49:03,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:49:03,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:49:03,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:49:03,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:49:03,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:49:03,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:49:03,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:49:03,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:49:03,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:49:03,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:49:03,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:49:03,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:49:03,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:49:03,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:49:03,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:49:03,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:49:03,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:49:03,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:49:03,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:49:03,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:49:03,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:49:03,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:49:03,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:49:03,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:49:03,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:49:03,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:49:03,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:49:03,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:49:03,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:49:03,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:49:03,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:49:03,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:49:03,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:49:03,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:49:03,375 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-NoLbe-McrStrategy.epf [2020-04-18 19:49:03,410 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:49:03,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:49:03,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:49:03,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:49:03,415 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:49:03,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:49:03,415 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:49:03,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:49:03,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:49:03,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:49:03,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:49:03,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:49:03,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:49:03,417 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:49:03,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:49:03,417 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:49:03,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:49:03,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:49:03,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:49:03,419 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:49:03,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:49:03,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:49:03,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:49:03,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:49:03,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:49:03,420 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:49:03,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:49:03,420 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:49:03,420 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:49:03,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:49:03,422 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:49:03,668 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:49:03,685 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:49:03,688 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:49:03,690 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:49:03,690 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:49:03,691 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i [2020-04-18 19:49:03,748 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a19bccd8/b76841e483bd44fc8d704acdcc2d86f8/FLAGf1ff819d9 [2020-04-18 19:49:04,231 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:49:04,232 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i [2020-04-18 19:49:04,246 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a19bccd8/b76841e483bd44fc8d704acdcc2d86f8/FLAGf1ff819d9 [2020-04-18 19:49:04,506 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a19bccd8/b76841e483bd44fc8d704acdcc2d86f8 [2020-04-18 19:49:04,516 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:49:04,535 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:49:04,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:49:04,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:49:04,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:49:04,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:49:04" (1/1) ... [2020-04-18 19:49:04,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@510ae6c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:04, skipping insertion in model container [2020-04-18 19:49:04,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:49:04" (1/1) ... [2020-04-18 19:49:04,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:49:04,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:49:04,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:49:04,983 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:49:05,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:49:05,186 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:49:05,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:05 WrapperNode [2020-04-18 19:49:05,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:49:05,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:49:05,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:49:05,188 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:49:05,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:05" (1/1) ... [2020-04-18 19:49:05,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:05" (1/1) ... [2020-04-18 19:49:05,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:49:05,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:49:05,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:49:05,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:49:05,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:05" (1/1) ... [2020-04-18 19:49:05,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:05" (1/1) ... [2020-04-18 19:49:05,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:05" (1/1) ... [2020-04-18 19:49:05,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:05" (1/1) ... [2020-04-18 19:49:05,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:05" (1/1) ... [2020-04-18 19:49:05,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:05" (1/1) ... [2020-04-18 19:49:05,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:05" (1/1) ... [2020-04-18 19:49:05,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:49:05,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:49:05,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:49:05,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:49:05,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:05" (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 19:49:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:49:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:49:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:49:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:49:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:49:05,333 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:49:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:49:05,335 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:49:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:49:05,335 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:49:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:49:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:49:05,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:49:05,337 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 19:49:05,701 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:49:05,701 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:49:05,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:49:05 BoogieIcfgContainer [2020-04-18 19:49:05,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:49:05,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:49:05,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:49:05,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:49:05,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:49:04" (1/3) ... [2020-04-18 19:49:05,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7987792e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:49:05, skipping insertion in model container [2020-04-18 19:49:05,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:05" (2/3) ... [2020-04-18 19:49:05,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7987792e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:49:05, skipping insertion in model container [2020-04-18 19:49:05,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:49:05" (3/3) ... [2020-04-18 19:49:05,714 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_tso.opt.i [2020-04-18 19:49:05,723 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:49:05,724 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:49:05,731 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:49:05,732 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:49:05,757 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,757 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,757 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,758 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,758 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,758 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,759 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,759 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,759 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,760 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,760 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,760 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,761 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,761 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,762 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,762 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,762 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,762 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,768 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,769 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,769 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,769 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,785 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,785 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,785 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,786 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,795 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,796 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,796 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,796 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,809 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:49:05,824 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:49:05,824 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:49:05,824 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:49:05,824 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:49:05,825 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:49:05,825 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:49:05,825 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:49:05,826 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:49:05,837 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 19:49:06,317 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states. [2020-04-18 19:49:06,319 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states. [2020-04-18 19:49:06,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:49:06,349 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:49:06,350 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:49:06,351 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:49:06,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:06,359 INFO L82 PathProgramCache]: Analyzing trace with hash -2081382383, now seen corresponding path program 1 times [2020-04-18 19:49:06,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:49:06,367 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1235725420] [2020-04-18 19:49:06,385 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:06,404 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:49:06,409 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 19:49:06,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:49:06,410 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:49:06,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:06,411 INFO L82 PathProgramCache]: Analyzing trace with hash -2081382383, now seen corresponding path program 2 times [2020-04-18 19:49:06,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:06,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264247180] [2020-04-18 19:49:06,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:06,960 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 19:49:06,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264247180] [2020-04-18 19:49:06,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:06,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:49:06,963 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:06,967 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:06,974 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:49:06,975 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:07,035 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:49:07,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:49:07,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:49:07,040 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 6 states. [2020-04-18 19:49:07,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:07,142 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2020-04-18 19:49:07,142 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2020-04-18 19:49:07,142 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:49:07,143 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1235725420] [2020-04-18 19:49:07,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:49:07,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:49:07,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1235725420] [2020-04-18 19:49:07,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:49:07,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:49:07,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:49:07,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:49:07,150 INFO L87 Difference]: Start difference. First operand 8472 states. Second operand 6 states. [2020-04-18 19:49:07,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:07,623 INFO L93 Difference]: Finished difference Result 19772 states and 68248 transitions. [2020-04-18 19:49:07,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:49:07,624 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-04-18 19:49:07,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:49:07,721 INFO L225 Difference]: With dead ends: 19772 [2020-04-18 19:49:07,721 INFO L226 Difference]: Without dead ends: 6494 [2020-04-18 19:49:07,725 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:49:07,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6494 states. [2020-04-18 19:49:08,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6494 to 5372. [2020-04-18 19:49:08,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5372 states. [2020-04-18 19:49:08,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 18201 transitions. [2020-04-18 19:49:08,103 INFO L78 Accepts]: Start accepts. Automaton has 5372 states and 18201 transitions. Word has length 36 [2020-04-18 19:49:08,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:49:08,106 INFO L479 AbstractCegarLoop]: Abstraction has 5372 states and 18201 transitions. [2020-04-18 19:49:08,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:49:08,109 INFO L276 IsEmpty]: Start isEmpty. Operand 5372 states and 18201 transitions. [2020-04-18 19:49:08,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:49:08,210 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:49:08,210 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:49:08,211 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:49:08,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:08,211 INFO L82 PathProgramCache]: Analyzing trace with hash -119523886, now seen corresponding path program 1 times [2020-04-18 19:49:08,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:49:08,212 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [693072314] [2020-04-18 19:49:08,213 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:08,214 INFO L259 McrAutomatonBuilder]: Finished intersection with 63 states and 86 transitions. [2020-04-18 19:49:08,215 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-04-18 19:49:08,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:49:08,216 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:49:08,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:08,216 INFO L82 PathProgramCache]: Analyzing trace with hash -2092436526, now seen corresponding path program 2 times [2020-04-18 19:49:08,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:08,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692382932] [2020-04-18 19:49:08,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:08,408 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 19:49:08,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692382932] [2020-04-18 19:49:08,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:08,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:49:08,410 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:08,414 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:08,420 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 72 transitions. [2020-04-18 19:49:08,420 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:08,479 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:49:08,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:49:08,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:49:08,480 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 6 states. [2020-04-18 19:49:08,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:08,637 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2020-04-18 19:49:08,637 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2020-04-18 19:49:08,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:49:08,638 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:49:08,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:08,639 INFO L82 PathProgramCache]: Analyzing trace with hash -119523886, now seen corresponding path program 3 times [2020-04-18 19:49:08,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:08,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443548844] [2020-04-18 19:49:08,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:08,852 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 19:49:08,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443548844] [2020-04-18 19:49:08,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:08,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:49:08,854 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:08,859 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:08,864 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 62 transitions. [2020-04-18 19:49:08,864 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:08,980 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:49:08,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:49:08,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-04-18 19:49:08,981 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand 11 states. [2020-04-18 19:49:09,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:09,074 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2020-04-18 19:49:09,074 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2020-04-18 19:49:09,075 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:49:09,075 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [693072314] [2020-04-18 19:49:09,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:49:09,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:49:09,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [693072314] [2020-04-18 19:49:09,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 19:49:09,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:49:09,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:49:09,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:49:09,083 INFO L87 Difference]: Start difference. First operand 5372 states and 18201 transitions. Second operand 11 states. [2020-04-18 19:49:09,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:09,325 INFO L93 Difference]: Finished difference Result 7156 states and 23836 transitions. [2020-04-18 19:49:09,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 19:49:09,325 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-04-18 19:49:09,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:49:09,366 INFO L225 Difference]: With dead ends: 7156 [2020-04-18 19:49:09,367 INFO L226 Difference]: Without dead ends: 5744 [2020-04-18 19:49:09,368 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:49:09,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5744 states. [2020-04-18 19:49:09,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5744 to 4672. [2020-04-18 19:49:09,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4672 states. [2020-04-18 19:49:09,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4672 states to 4672 states and 15711 transitions. [2020-04-18 19:49:09,599 INFO L78 Accepts]: Start accepts. Automaton has 4672 states and 15711 transitions. Word has length 38 [2020-04-18 19:49:09,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:49:09,599 INFO L479 AbstractCegarLoop]: Abstraction has 4672 states and 15711 transitions. [2020-04-18 19:49:09,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 19:49:09,600 INFO L276 IsEmpty]: Start isEmpty. Operand 4672 states and 15711 transitions. [2020-04-18 19:49:09,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:49:09,610 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:49:09,610 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:49:09,611 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:49:09,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:09,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1321324144, now seen corresponding path program 1 times [2020-04-18 19:49:09,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:49:09,612 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [793463324] [2020-04-18 19:49:09,613 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:09,615 INFO L259 McrAutomatonBuilder]: Finished intersection with 88 states and 135 transitions. [2020-04-18 19:49:09,616 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-04-18 19:49:09,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:49:09,616 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:49:09,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:09,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1321324144, now seen corresponding path program 2 times [2020-04-18 19:49:09,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:09,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687573368] [2020-04-18 19:49:09,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:09,759 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 19:49:09,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687573368] [2020-04-18 19:49:09,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:09,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:49:09,761 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:09,765 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:09,771 INFO L259 McrAutomatonBuilder]: Finished intersection with 70 states and 99 transitions. [2020-04-18 19:49:09,771 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:09,806 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:49:09,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:49:09,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:49:09,807 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 6 states. [2020-04-18 19:49:09,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:09,855 INFO L93 Difference]: Finished difference Result 88 states and 135 transitions. [2020-04-18 19:49:09,856 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 135 transitions. [2020-04-18 19:49:09,856 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:49:09,856 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [793463324] [2020-04-18 19:49:09,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:49:09,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:49:09,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [793463324] [2020-04-18 19:49:09,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:49:09,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:49:09,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:49:09,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:49:09,858 INFO L87 Difference]: Start difference. First operand 4672 states and 15711 transitions. Second operand 6 states. [2020-04-18 19:49:09,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:09,966 INFO L93 Difference]: Finished difference Result 5120 states and 17075 transitions. [2020-04-18 19:49:09,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:49:09,967 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-04-18 19:49:09,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:49:09,998 INFO L225 Difference]: With dead ends: 5120 [2020-04-18 19:49:09,998 INFO L226 Difference]: Without dead ends: 4336 [2020-04-18 19:49:09,999 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:49:10,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2020-04-18 19:49:10,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 4048. [2020-04-18 19:49:10,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4048 states. [2020-04-18 19:49:10,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 13587 transitions. [2020-04-18 19:49:10,122 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 13587 transitions. Word has length 39 [2020-04-18 19:49:10,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:49:10,123 INFO L479 AbstractCegarLoop]: Abstraction has 4048 states and 13587 transitions. [2020-04-18 19:49:10,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:49:10,123 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 13587 transitions. [2020-04-18 19:49:10,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:49:10,133 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:49:10,133 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:49:10,133 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:49:10,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:10,133 INFO L82 PathProgramCache]: Analyzing trace with hash -609493549, now seen corresponding path program 1 times [2020-04-18 19:49:10,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:49:10,134 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [573816235] [2020-04-18 19:49:10,135 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:10,138 INFO L259 McrAutomatonBuilder]: Finished intersection with 149 states and 304 transitions. [2020-04-18 19:49:10,139 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2020-04-18 19:49:10,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:49:10,139 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:49:10,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:10,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1712561107, now seen corresponding path program 2 times [2020-04-18 19:49:10,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:10,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111340320] [2020-04-18 19:49:10,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:10,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:49:10,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111340320] [2020-04-18 19:49:10,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:10,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:49:10,330 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:10,334 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:10,344 INFO L259 McrAutomatonBuilder]: Finished intersection with 92 states and 154 transitions. [2020-04-18 19:49:10,344 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:10,383 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:49:10,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:49:10,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:49:10,384 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 6 states. [2020-04-18 19:49:10,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:10,525 INFO L93 Difference]: Finished difference Result 184 states and 347 transitions. [2020-04-18 19:49:10,525 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 347 transitions. [2020-04-18 19:49:10,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:49:10,526 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:49:10,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:10,526 INFO L82 PathProgramCache]: Analyzing trace with hash -609493549, now seen corresponding path program 3 times [2020-04-18 19:49:10,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:10,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694696845] [2020-04-18 19:49:10,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:10,633 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 19:49:10,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694696845] [2020-04-18 19:49:10,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:10,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:49:10,634 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:10,638 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:10,649 INFO L259 McrAutomatonBuilder]: Finished intersection with 87 states and 144 transitions. [2020-04-18 19:49:10,649 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:10,757 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:49:10,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:49:10,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-04-18 19:49:10,758 INFO L87 Difference]: Start difference. First operand 184 states and 347 transitions. Second operand 11 states. [2020-04-18 19:49:10,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:10,932 INFO L93 Difference]: Finished difference Result 184 states and 347 transitions. [2020-04-18 19:49:10,932 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 347 transitions. [2020-04-18 19:49:10,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:49:10,933 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:49:10,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:10,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1994403109, now seen corresponding path program 4 times [2020-04-18 19:49:10,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:10,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214375308] [2020-04-18 19:49:10,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:11,076 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 19:49:11,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214375308] [2020-04-18 19:49:11,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:11,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:49:11,077 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:11,081 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:11,092 INFO L259 McrAutomatonBuilder]: Finished intersection with 88 states and 146 transitions. [2020-04-18 19:49:11,092 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:11,119 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 17 times. [2020-04-18 19:49:11,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:49:11,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:49:11,119 INFO L87 Difference]: Start difference. First operand 184 states and 347 transitions. Second operand 11 states. [2020-04-18 19:49:11,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:11,297 INFO L93 Difference]: Finished difference Result 184 states and 347 transitions. [2020-04-18 19:49:11,297 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 347 transitions. [2020-04-18 19:49:11,298 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:49:11,298 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [573816235] [2020-04-18 19:49:11,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:49:11,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:49:11,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [573816235] [2020-04-18 19:49:11,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 19:49:11,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:49:11,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:49:11,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:49:11,301 INFO L87 Difference]: Start difference. First operand 4048 states and 13587 transitions. Second operand 12 states. [2020-04-18 19:49:11,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:11,523 INFO L93 Difference]: Finished difference Result 5626 states and 18491 transitions. [2020-04-18 19:49:11,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 19:49:11,523 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-04-18 19:49:11,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:49:11,541 INFO L225 Difference]: With dead ends: 5626 [2020-04-18 19:49:11,542 INFO L226 Difference]: Without dead ends: 4606 [2020-04-18 19:49:11,542 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:49:11,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4606 states. [2020-04-18 19:49:11,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4606 to 3593. [2020-04-18 19:49:11,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3593 states. [2020-04-18 19:49:11,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 11958 transitions. [2020-04-18 19:49:11,720 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 11958 transitions. Word has length 40 [2020-04-18 19:49:11,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:49:11,721 INFO L479 AbstractCegarLoop]: Abstraction has 3593 states and 11958 transitions. [2020-04-18 19:49:11,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 19:49:11,721 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 11958 transitions. [2020-04-18 19:49:11,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:49:11,730 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:49:11,730 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:49:11,731 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:49:11,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:11,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1411336305, now seen corresponding path program 1 times [2020-04-18 19:49:11,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:49:11,737 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [880415257] [2020-04-18 19:49:11,738 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:11,742 INFO L259 McrAutomatonBuilder]: Finished intersection with 192 states and 413 transitions. [2020-04-18 19:49:11,743 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-04-18 19:49:11,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:49:11,744 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:49:11,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:11,744 INFO L82 PathProgramCache]: Analyzing trace with hash -561576335, now seen corresponding path program 2 times [2020-04-18 19:49:11,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:11,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906856213] [2020-04-18 19:49:11,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:11,861 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 19:49:11,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906856213] [2020-04-18 19:49:11,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:11,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:49:11,862 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:11,865 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:11,878 INFO L259 McrAutomatonBuilder]: Finished intersection with 110 states and 195 transitions. [2020-04-18 19:49:11,879 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:11,916 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:49:11,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:49:11,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:49:11,917 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 6 states. [2020-04-18 19:49:12,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:12,040 INFO L93 Difference]: Finished difference Result 216 states and 451 transitions. [2020-04-18 19:49:12,041 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 451 transitions. [2020-04-18 19:49:12,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:49:12,042 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:49:12,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:12,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1411336305, now seen corresponding path program 3 times [2020-04-18 19:49:12,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:12,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987754107] [2020-04-18 19:49:12,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:12,165 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 19:49:12,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987754107] [2020-04-18 19:49:12,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:12,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:49:12,167 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:12,172 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:12,188 INFO L259 McrAutomatonBuilder]: Finished intersection with 105 states and 185 transitions. [2020-04-18 19:49:12,188 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:12,265 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 19:49:12,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:49:12,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:49:12,267 INFO L87 Difference]: Start difference. First operand 216 states and 451 transitions. Second operand 6 states. [2020-04-18 19:49:12,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:12,321 INFO L93 Difference]: Finished difference Result 216 states and 451 transitions. [2020-04-18 19:49:12,321 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 451 transitions. [2020-04-18 19:49:12,322 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:49:12,322 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [880415257] [2020-04-18 19:49:12,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:49:12,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:49:12,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [880415257] [2020-04-18 19:49:12,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 19:49:12,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:49:12,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:49:12,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:49:12,325 INFO L87 Difference]: Start difference. First operand 3593 states and 11958 transitions. Second operand 10 states. [2020-04-18 19:49:12,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:12,593 INFO L93 Difference]: Finished difference Result 4656 states and 15237 transitions. [2020-04-18 19:49:12,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 19:49:12,594 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-04-18 19:49:12,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:49:12,605 INFO L225 Difference]: With dead ends: 4656 [2020-04-18 19:49:12,605 INFO L226 Difference]: Without dead ends: 3220 [2020-04-18 19:49:12,606 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-04-18 19:49:12,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2020-04-18 19:49:12,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3220. [2020-04-18 19:49:12,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3220 states. [2020-04-18 19:49:12,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3220 states to 3220 states and 10471 transitions. [2020-04-18 19:49:12,698 INFO L78 Accepts]: Start accepts. Automaton has 3220 states and 10471 transitions. Word has length 41 [2020-04-18 19:49:12,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:49:12,698 INFO L479 AbstractCegarLoop]: Abstraction has 3220 states and 10471 transitions. [2020-04-18 19:49:12,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 19:49:12,698 INFO L276 IsEmpty]: Start isEmpty. Operand 3220 states and 10471 transitions. [2020-04-18 19:49:12,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:49:12,713 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:49:12,713 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:49:12,713 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:49:12,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:12,714 INFO L82 PathProgramCache]: Analyzing trace with hash 503157938, now seen corresponding path program 1 times [2020-04-18 19:49:12,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:49:12,714 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1554646185] [2020-04-18 19:49:12,716 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:12,720 INFO L259 McrAutomatonBuilder]: Finished intersection with 235 states and 522 transitions. [2020-04-18 19:49:12,721 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states. [2020-04-18 19:49:12,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:49:12,722 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:49:12,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:12,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1661203988, now seen corresponding path program 2 times [2020-04-18 19:49:12,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:12,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621664951] [2020-04-18 19:49:12,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:12,849 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 19:49:12,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621664951] [2020-04-18 19:49:12,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:12,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:49:12,850 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:12,854 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:12,917 INFO L259 McrAutomatonBuilder]: Finished intersection with 138 states and 265 transitions. [2020-04-18 19:49:12,918 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:13,019 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:49:13,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:49:13,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:49:13,020 INFO L87 Difference]: Start difference. First operand 235 states. Second operand 8 states. [2020-04-18 19:49:13,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:13,234 INFO L93 Difference]: Finished difference Result 282 states and 604 transitions. [2020-04-18 19:49:13,234 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 604 transitions. [2020-04-18 19:49:13,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:49:13,235 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:49:13,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:13,235 INFO L82 PathProgramCache]: Analyzing trace with hash -660850668, now seen corresponding path program 3 times [2020-04-18 19:49:13,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:13,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278895775] [2020-04-18 19:49:13,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:13,339 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 19:49:13,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278895775] [2020-04-18 19:49:13,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:13,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:49:13,341 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:13,344 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:13,357 INFO L259 McrAutomatonBuilder]: Finished intersection with 126 states and 234 transitions. [2020-04-18 19:49:13,358 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:13,451 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:49:13,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:49:13,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:49:13,452 INFO L87 Difference]: Start difference. First operand 282 states and 604 transitions. Second operand 7 states. [2020-04-18 19:49:13,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:13,571 INFO L93 Difference]: Finished difference Result 282 states and 604 transitions. [2020-04-18 19:49:13,571 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 604 transitions. [2020-04-18 19:49:13,571 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:49:13,572 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1554646185] [2020-04-18 19:49:13,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:49:13,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:49:13,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1554646185] [2020-04-18 19:49:13,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 19:49:13,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:49:13,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 19:49:13,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2020-04-18 19:49:13,574 INFO L87 Difference]: Start difference. First operand 3220 states and 10471 transitions. Second operand 13 states. [2020-04-18 19:49:14,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:14,187 INFO L93 Difference]: Finished difference Result 4147 states and 13113 transitions. [2020-04-18 19:49:14,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-04-18 19:49:14,188 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-04-18 19:49:14,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:49:14,197 INFO L225 Difference]: With dead ends: 4147 [2020-04-18 19:49:14,197 INFO L226 Difference]: Without dead ends: 2719 [2020-04-18 19:49:14,198 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=321, Invalid=1485, Unknown=0, NotChecked=0, Total=1806 [2020-04-18 19:49:14,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2719 states. [2020-04-18 19:49:14,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2719 to 2218. [2020-04-18 19:49:14,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2218 states. [2020-04-18 19:49:14,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 6827 transitions. [2020-04-18 19:49:14,255 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 6827 transitions. Word has length 42 [2020-04-18 19:49:14,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:49:14,255 INFO L479 AbstractCegarLoop]: Abstraction has 2218 states and 6827 transitions. [2020-04-18 19:49:14,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 19:49:14,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 6827 transitions. [2020-04-18 19:49:14,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:49:14,260 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:49:14,260 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:49:14,260 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:49:14,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:14,260 INFO L82 PathProgramCache]: Analyzing trace with hash 533348271, now seen corresponding path program 1 times [2020-04-18 19:49:14,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:49:14,261 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [837173034] [2020-04-18 19:49:14,262 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:14,269 INFO L259 McrAutomatonBuilder]: Finished intersection with 365 states and 876 transitions. [2020-04-18 19:49:14,271 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states. [2020-04-18 19:49:14,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:49:14,272 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:49:14,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:14,272 INFO L82 PathProgramCache]: Analyzing trace with hash -295455403, now seen corresponding path program 2 times [2020-04-18 19:49:14,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:14,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878753576] [2020-04-18 19:49:14,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:14,369 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 19:49:14,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878753576] [2020-04-18 19:49:14,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:14,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:49:14,370 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:14,375 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:14,397 INFO L259 McrAutomatonBuilder]: Finished intersection with 156 states and 304 transitions. [2020-04-18 19:49:14,398 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:14,478 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 18 times. [2020-04-18 19:49:14,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:49:14,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:49:14,479 INFO L87 Difference]: Start difference. First operand 365 states. Second operand 8 states. [2020-04-18 19:49:14,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:14,758 INFO L93 Difference]: Finished difference Result 506 states and 1216 transitions. [2020-04-18 19:49:14,758 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 1216 transitions. [2020-04-18 19:49:14,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:49:14,759 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:49:14,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:14,760 INFO L82 PathProgramCache]: Analyzing trace with hash 177514837, now seen corresponding path program 3 times [2020-04-18 19:49:14,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:14,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278974794] [2020-04-18 19:49:14,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:14,867 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 19:49:14,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278974794] [2020-04-18 19:49:14,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:14,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:49:14,868 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:14,870 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:14,882 INFO L259 McrAutomatonBuilder]: Finished intersection with 149 states and 282 transitions. [2020-04-18 19:49:14,882 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:14,986 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 23 times. [2020-04-18 19:49:14,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:49:14,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:49:14,987 INFO L87 Difference]: Start difference. First operand 506 states and 1216 transitions. Second operand 9 states. [2020-04-18 19:49:15,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:15,213 INFO L93 Difference]: Finished difference Result 506 states and 1216 transitions. [2020-04-18 19:49:15,214 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 1216 transitions. [2020-04-18 19:49:15,215 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:49:15,215 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [837173034] [2020-04-18 19:49:15,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:49:15,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:49:15,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [837173034] [2020-04-18 19:49:15,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 19:49:15,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:49:15,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 19:49:15,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=755, Unknown=0, NotChecked=0, Total=930 [2020-04-18 19:49:15,217 INFO L87 Difference]: Start difference. First operand 2218 states and 6827 transitions. Second operand 15 states. [2020-04-18 19:49:15,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:15,791 INFO L93 Difference]: Finished difference Result 2413 states and 7280 transitions. [2020-04-18 19:49:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 19:49:15,791 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-04-18 19:49:15,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:49:15,799 INFO L225 Difference]: With dead ends: 2413 [2020-04-18 19:49:15,799 INFO L226 Difference]: Without dead ends: 1183 [2020-04-18 19:49:15,804 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=371, Invalid=1699, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 19:49:15,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2020-04-18 19:49:15,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1019. [2020-04-18 19:49:15,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1019 states. [2020-04-18 19:49:15,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 2902 transitions. [2020-04-18 19:49:15,830 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 2902 transitions. Word has length 44 [2020-04-18 19:49:15,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:49:15,830 INFO L479 AbstractCegarLoop]: Abstraction has 1019 states and 2902 transitions. [2020-04-18 19:49:15,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 19:49:15,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 2902 transitions. [2020-04-18 19:49:15,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:49:15,833 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:49:15,833 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:49:15,834 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:49:15,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:15,834 INFO L82 PathProgramCache]: Analyzing trace with hash -37900835, now seen corresponding path program 1 times [2020-04-18 19:49:15,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:49:15,836 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1205139174] [2020-04-18 19:49:15,839 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:15,893 INFO L259 McrAutomatonBuilder]: Finished intersection with 1761 states and 5712 transitions. [2020-04-18 19:49:15,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states. [2020-04-18 19:49:15,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:49:15,917 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:49:15,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:15,918 INFO L82 PathProgramCache]: Analyzing trace with hash 203508281, now seen corresponding path program 2 times [2020-04-18 19:49:15,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:15,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426701431] [2020-04-18 19:49:15,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:16,032 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 19:49:16,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426701431] [2020-04-18 19:49:16,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:16,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:49:16,033 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:16,038 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:16,074 INFO L259 McrAutomatonBuilder]: Finished intersection with 252 states and 544 transitions. [2020-04-18 19:49:16,074 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:16,142 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:49:16,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:49:16,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:49:16,143 INFO L87 Difference]: Start difference. First operand 1761 states. Second operand 8 states. [2020-04-18 19:49:16,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:16,453 INFO L93 Difference]: Finished difference Result 2874 states and 9142 transitions. [2020-04-18 19:49:16,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 9142 transitions. [2020-04-18 19:49:16,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:49:16,458 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:49:16,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:16,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1203774399, now seen corresponding path program 3 times [2020-04-18 19:49:16,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:16,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824091312] [2020-04-18 19:49:16,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:16,537 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 19:49:16,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824091312] [2020-04-18 19:49:16,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:16,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:49:16,538 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:16,542 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:16,579 INFO L259 McrAutomatonBuilder]: Finished intersection with 249 states and 532 transitions. [2020-04-18 19:49:16,580 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:16,705 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 19 times. [2020-04-18 19:49:16,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:49:16,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:49:16,706 INFO L87 Difference]: Start difference. First operand 2874 states and 9142 transitions. Second operand 12 states. [2020-04-18 19:49:16,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:16,901 INFO L93 Difference]: Finished difference Result 4114 states and 12586 transitions. [2020-04-18 19:49:16,901 INFO L276 IsEmpty]: Start isEmpty. Operand 4114 states and 12586 transitions. [2020-04-18 19:49:16,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:49:16,908 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:49:16,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:16,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1293166627, now seen corresponding path program 4 times [2020-04-18 19:49:16,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:16,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592751678] [2020-04-18 19:49:16,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:17,011 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 19:49:17,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592751678] [2020-04-18 19:49:17,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:17,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:49:17,012 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:17,019 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:17,056 INFO L259 McrAutomatonBuilder]: Finished intersection with 242 states and 518 transitions. [2020-04-18 19:49:17,056 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:17,248 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 17 times. [2020-04-18 19:49:17,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:49:17,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1045, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 19:49:17,249 INFO L87 Difference]: Start difference. First operand 4114 states and 12586 transitions. Second operand 9 states. [2020-04-18 19:49:17,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:17,656 INFO L93 Difference]: Finished difference Result 4158 states and 12626 transitions. [2020-04-18 19:49:17,656 INFO L276 IsEmpty]: Start isEmpty. Operand 4158 states and 12626 transitions. [2020-04-18 19:49:17,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:49:17,662 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:49:17,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:17,663 INFO L82 PathProgramCache]: Analyzing trace with hash -155524805, now seen corresponding path program 5 times [2020-04-18 19:49:17,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:17,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550589782] [2020-04-18 19:49:17,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:17,765 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 19:49:17,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550589782] [2020-04-18 19:49:17,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:17,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:49:17,766 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:17,770 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:17,790 INFO L259 McrAutomatonBuilder]: Finished intersection with 113 states and 202 transitions. [2020-04-18 19:49:17,791 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:17,842 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:49:17,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:49:17,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=1897, Unknown=0, NotChecked=0, Total=2256 [2020-04-18 19:49:17,844 INFO L87 Difference]: Start difference. First operand 4158 states and 12626 transitions. Second operand 8 states. [2020-04-18 19:49:18,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:18,273 INFO L93 Difference]: Finished difference Result 6420 states and 18826 transitions. [2020-04-18 19:49:18,274 INFO L276 IsEmpty]: Start isEmpty. Operand 6420 states and 18826 transitions. [2020-04-18 19:49:18,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:49:18,333 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:49:18,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:18,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1698442605, now seen corresponding path program 6 times [2020-04-18 19:49:18,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:18,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982508524] [2020-04-18 19:49:18,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:18,455 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 19:49:18,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982508524] [2020-04-18 19:49:18,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:18,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:49:18,457 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:18,464 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:18,485 INFO L259 McrAutomatonBuilder]: Finished intersection with 125 states and 240 transitions. [2020-04-18 19:49:18,486 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:18,535 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:49:18,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:49:18,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=486, Invalid=2936, Unknown=0, NotChecked=0, Total=3422 [2020-04-18 19:49:18,537 INFO L87 Difference]: Start difference. First operand 6420 states and 18826 transitions. Second operand 8 states. [2020-04-18 19:49:18,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:18,834 INFO L93 Difference]: Finished difference Result 8623 states and 24798 transitions. [2020-04-18 19:49:18,834 INFO L276 IsEmpty]: Start isEmpty. Operand 8623 states and 24798 transitions. [2020-04-18 19:49:18,850 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:49:18,851 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1205139174] [2020-04-18 19:49:18,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:49:18,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:49:18,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1205139174] [2020-04-18 19:49:18,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 19:49:18,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:49:18,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 19:49:18,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=537, Invalid=3369, Unknown=0, NotChecked=0, Total=3906 [2020-04-18 19:49:18,854 INFO L87 Difference]: Start difference. First operand 1019 states and 2902 transitions. Second operand 25 states. [2020-04-18 19:49:22,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:22,110 INFO L93 Difference]: Finished difference Result 3593 states and 10257 transitions. [2020-04-18 19:49:22,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2020-04-18 19:49:22,110 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2020-04-18 19:49:22,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:49:22,111 INFO L225 Difference]: With dead ends: 3593 [2020-04-18 19:49:22,111 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:49:22,118 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9116 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3114, Invalid=21378, Unknown=0, NotChecked=0, Total=24492 [2020-04-18 19:49:22,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:49:22,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:49:22,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:49:22,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:49:22,119 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-04-18 19:49:22,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:49:22,119 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:49:22,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 19:49:22,119 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:49:22,119 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:49:22,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:49:22 BasicIcfg [2020-04-18 19:49:22,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:49:22,126 INFO L168 Benchmark]: Toolchain (without parser) took 17607.72 ms. Allocated memory was 139.5 MB in the beginning and 666.9 MB in the end (delta: 527.4 MB). Free memory was 101.8 MB in the beginning and 357.6 MB in the end (delta: -255.8 MB). Peak memory consumption was 271.6 MB. Max. memory is 7.1 GB. [2020-04-18 19:49:22,126 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 19:49:22,127 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.62 ms. Allocated memory was 139.5 MB in the beginning and 232.3 MB in the end (delta: 92.8 MB). Free memory was 99.9 MB in the beginning and 197.4 MB in the end (delta: -97.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:49:22,127 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.73 ms. Allocated memory is still 232.3 MB. Free memory was 197.4 MB in the beginning and 195.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-04-18 19:49:22,128 INFO L168 Benchmark]: Boogie Preprocessor took 29.47 ms. Allocated memory is still 232.3 MB. Free memory was 195.6 MB in the beginning and 193.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-04-18 19:49:22,129 INFO L168 Benchmark]: RCFGBuilder took 434.63 ms. Allocated memory is still 232.3 MB. Free memory was 193.7 MB in the beginning and 171.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-18 19:49:22,129 INFO L168 Benchmark]: TraceAbstraction took 16417.05 ms. Allocated memory was 232.3 MB in the beginning and 666.9 MB in the end (delta: 434.6 MB). Free memory was 170.6 MB in the beginning and 357.6 MB in the end (delta: -187.0 MB). Peak memory consumption was 247.6 MB. Max. memory is 7.1 GB. [2020-04-18 19:49:22,132 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 651.62 ms. Allocated memory was 139.5 MB in the beginning and 232.3 MB in the end (delta: 92.8 MB). Free memory was 99.9 MB in the beginning and 197.4 MB in the end (delta: -97.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.73 ms. Allocated memory is still 232.3 MB. Free memory was 197.4 MB in the beginning and 195.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.47 ms. Allocated memory is still 232.3 MB. Free memory was 195.6 MB in the beginning and 193.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 434.63 ms. Allocated memory is still 232.3 MB. Free memory was 193.7 MB in the beginning and 171.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16417.05 ms. Allocated memory was 232.3 MB in the beginning and 666.9 MB in the end (delta: 434.6 MB). Free memory was 170.6 MB in the beginning and 357.6 MB in the end (delta: -187.0 MB). Peak memory consumption was 247.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 16.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 954 SDtfs, 2948 SDslu, 6720 SDs, 0 SdLazy, 1683 SolverSat, 298 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1339 GetRequests, 1018 SyntacticMatches, 0 SemanticMatches, 321 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10478 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8472occurred 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: 1.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 4160 StatesRemovedByMinimization, 6 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...