/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe037_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:45:15,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:45:15,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:45:15,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:45:15,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:45:15,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:45:15,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:45:15,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:45:15,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:45:15,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:45:15,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:45:15,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:45:15,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:45:15,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:45:15,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:45:15,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:45:15,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:45:15,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:45:15,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:45:15,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:45:15,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:45:15,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:45:15,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:45:15,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:45:15,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:45:15,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:45:15,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:45:15,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:45:15,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:45:15,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:45:15,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:45:15,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:45:15,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:45:15,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:45:15,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:45:15,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:45:15,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:45:15,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:45:15,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:45:15,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:45:15,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:45:15,358 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf [2020-04-18 15:45:15,374 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:45:15,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:45:15,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:45:15,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:45:15,376 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:45:15,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:45:15,376 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:45:15,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:45:15,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:45:15,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:45:15,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:45:15,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:45:15,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:45:15,377 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:45:15,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:45:15,378 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:45:15,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:45:15,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:45:15,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:45:15,378 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:45:15,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:45:15,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:45:15,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:45:15,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:45:15,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:45:15,380 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:45:15,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:45:15,380 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:45:15,380 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:45:15,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:45:15,381 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:45:15,686 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:45:15,699 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:45:15,702 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:45:15,704 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:45:15,704 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:45:15,705 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_tso.opt.i [2020-04-18 15:45:15,766 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e65e70b7c/368ab979e92d4d349c1caf09b30bb556/FLAG1fc98da72 [2020-04-18 15:45:16,291 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:45:16,292 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_tso.opt.i [2020-04-18 15:45:16,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e65e70b7c/368ab979e92d4d349c1caf09b30bb556/FLAG1fc98da72 [2020-04-18 15:45:16,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e65e70b7c/368ab979e92d4d349c1caf09b30bb556 [2020-04-18 15:45:16,609 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:45:16,632 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:45:16,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:45:16,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:45:16,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:45:16,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:45:16" (1/1) ... [2020-04-18 15:45:16,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@165ac1d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:16, skipping insertion in model container [2020-04-18 15:45:16,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:45:16" (1/1) ... [2020-04-18 15:45:16,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:45:16,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:45:17,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:45:17,248 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:45:17,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:45:17,380 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:45:17,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:17 WrapperNode [2020-04-18 15:45:17,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:45:17,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:45:17,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:45:17,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:45:17,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:17" (1/1) ... [2020-04-18 15:45:17,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:17" (1/1) ... [2020-04-18 15:45:17,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:45:17,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:45:17,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:45:17,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:45:17,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:17" (1/1) ... [2020-04-18 15:45:17,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:17" (1/1) ... [2020-04-18 15:45:17,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:17" (1/1) ... [2020-04-18 15:45:17,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:17" (1/1) ... [2020-04-18 15:45:17,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:17" (1/1) ... [2020-04-18 15:45:17,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:17" (1/1) ... [2020-04-18 15:45:17,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:17" (1/1) ... [2020-04-18 15:45:17,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:45:17,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:45:17,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:45:17,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:45:17,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:17" (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 15:45:17,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:45:17,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:45:17,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:45:17,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:45:17,530 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:45:17,530 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:45:17,531 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:45:17,531 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:45:17,531 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:45:17,531 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:45:17,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:45:17,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:45:17,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:45:17,533 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 15:45:17,894 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:45:17,895 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:45:17,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:45:17 BoogieIcfgContainer [2020-04-18 15:45:17,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:45:17,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:45:17,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:45:17,904 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:45:17,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:45:16" (1/3) ... [2020-04-18 15:45:17,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20409574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:45:17, skipping insertion in model container [2020-04-18 15:45:17,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:17" (2/3) ... [2020-04-18 15:45:17,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20409574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:45:17, skipping insertion in model container [2020-04-18 15:45:17,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:45:17" (3/3) ... [2020-04-18 15:45:17,908 INFO L109 eAbstractionObserver]: Analyzing ICFG safe037_tso.opt.i [2020-04-18 15:45:17,918 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:45:17,919 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:45:17,925 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:45:17,927 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:45:17,956 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,956 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,957 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,957 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,958 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,958 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,959 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,959 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,959 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,959 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,960 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,960 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,961 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,961 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,961 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,961 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,962 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,962 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,966 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,967 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,967 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,967 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,982 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,983 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,983 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,983 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,994 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,994 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,995 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:17,995 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:18,016 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:45:18,032 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:45:18,032 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:45:18,032 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:45:18,033 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:45:18,033 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:45:18,033 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:45:18,033 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:45:18,033 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:45:18,051 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-18 15:45:18,053 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 15:45:18,109 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 15:45:18,109 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:45:18,114 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:45:18,117 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 15:45:18,137 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 15:45:18,138 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:45:18,138 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:45:18,140 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 15:45:18,142 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:45:19,399 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-18 15:45:19,490 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2315 [2020-04-18 15:45:19,490 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 15:45:19,494 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-18 15:45:19,541 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-18 15:45:19,544 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-18 15:45:19,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:45:19,561 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:45:19,562 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:45:19,564 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:45:19,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:19,571 INFO L82 PathProgramCache]: Analyzing trace with hash 385809968, now seen corresponding path program 1 times [2020-04-18 15:45:19,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:45:19,579 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1913685009] [2020-04-18 15:45:19,595 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:19,608 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:45:19,609 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:45:19,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:45:19,610 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:45:19,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:19,611 INFO L82 PathProgramCache]: Analyzing trace with hash 385809968, now seen corresponding path program 2 times [2020-04-18 15:45:19,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:45:19,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912702669] [2020-04-18 15:45:19,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:45:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:45:19,769 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 15:45:19,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912702669] [2020-04-18 15:45:19,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:45:19,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:45:19,772 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:45:19,773 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:19,776 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:45:19,776 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:45:19,792 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:45:19,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 15:45:19,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:45:19,798 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2020-04-18 15:45:19,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:19,802 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:45:19,803 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:45:19,803 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:45:19,804 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1913685009] [2020-04-18 15:45:19,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:45:19,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:45:19,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1913685009] [2020-04-18 15:45:19,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 15:45:19,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:45:19,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 15:45:19,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:45:19,811 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-18 15:45:19,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:19,832 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-18 15:45:19,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 15:45:19,834 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 15:45:19,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:45:19,855 INFO L225 Difference]: With dead ends: 362 [2020-04-18 15:45:19,855 INFO L226 Difference]: Without dead ends: 298 [2020-04-18 15:45:19,858 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:45:19,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-18 15:45:19,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-18 15:45:19,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-18 15:45:19,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-18 15:45:19,936 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-18 15:45:19,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:45:19,937 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-18 15:45:19,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 15:45:19,938 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-18 15:45:19,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:45:19,940 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:45:19,940 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:45:19,941 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:45:19,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:19,941 INFO L82 PathProgramCache]: Analyzing trace with hash -924796273, now seen corresponding path program 1 times [2020-04-18 15:45:19,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:45:19,942 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [963712274] [2020-04-18 15:45:19,942 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:19,943 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:45:19,943 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 15:45:19,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:45:19,944 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:45:19,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:19,944 INFO L82 PathProgramCache]: Analyzing trace with hash -924796273, now seen corresponding path program 2 times [2020-04-18 15:45:19,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:45:19,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542630048] [2020-04-18 15:45:19,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:45:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:45:20,079 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 15:45:20,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542630048] [2020-04-18 15:45:20,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:45:20,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:45:20,081 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:45:20,081 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:20,083 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:45:20,083 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:45:20,095 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:45:20,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:45:20,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:45:20,096 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-04-18 15:45:20,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:20,098 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 15:45:20,098 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 15:45:20,098 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:45:20,099 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [963712274] [2020-04-18 15:45:20,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:45:20,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:45:20,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [963712274] [2020-04-18 15:45:20,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:45:20,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:45:20,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:45:20,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:45:20,102 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-04-18 15:45:20,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:20,130 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-04-18 15:45:20,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:45:20,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 15:45:20,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:45:20,137 INFO L225 Difference]: With dead ends: 217 [2020-04-18 15:45:20,137 INFO L226 Difference]: Without dead ends: 217 [2020-04-18 15:45:20,140 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:45:20,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-04-18 15:45:20,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-04-18 15:45:20,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-04-18 15:45:20,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-04-18 15:45:20,173 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-04-18 15:45:20,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:45:20,173 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-04-18 15:45:20,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:45:20,174 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-04-18 15:45:20,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:45:20,175 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:45:20,176 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:45:20,176 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:45:20,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:20,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1123394358, now seen corresponding path program 1 times [2020-04-18 15:45:20,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:45:20,177 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [725591507] [2020-04-18 15:45:20,178 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:20,180 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 54 transitions. [2020-04-18 15:45:20,181 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-04-18 15:45:20,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:45:20,182 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:45:20,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:20,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1123394358, now seen corresponding path program 2 times [2020-04-18 15:45:20,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:45:20,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359376921] [2020-04-18 15:45:20,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:45:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:45:20,289 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 15:45:20,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359376921] [2020-04-18 15:45:20,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:45:20,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:45:20,291 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:45:20,293 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:20,296 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-04-18 15:45:20,297 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:45:20,309 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:45:20,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:45:20,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:45:20,310 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-04-18 15:45:20,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:20,316 INFO L93 Difference]: Finished difference Result 34 states and 54 transitions. [2020-04-18 15:45:20,317 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 54 transitions. [2020-04-18 15:45:20,319 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:45:20,319 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [725591507] [2020-04-18 15:45:20,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:45:20,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:45:20,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [725591507] [2020-04-18 15:45:20,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:45:20,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:45:20,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:45:20,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:45:20,322 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-04-18 15:45:20,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:20,348 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-04-18 15:45:20,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:45:20,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 15:45:20,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:45:20,350 INFO L225 Difference]: With dead ends: 136 [2020-04-18 15:45:20,350 INFO L226 Difference]: Without dead ends: 136 [2020-04-18 15:45:20,351 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:45:20,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-04-18 15:45:20,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-04-18 15:45:20,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-04-18 15:45:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-04-18 15:45:20,369 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-04-18 15:45:20,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:45:20,370 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-04-18 15:45:20,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:45:20,370 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-04-18 15:45:20,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:45:20,371 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:45:20,371 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:45:20,372 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:45:20,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:20,373 INFO L82 PathProgramCache]: Analyzing trace with hash -104701845, now seen corresponding path program 1 times [2020-04-18 15:45:20,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:45:20,374 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1088601879] [2020-04-18 15:45:20,375 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:20,376 INFO L259 McrAutomatonBuilder]: Finished intersection with 82 states and 174 transitions. [2020-04-18 15:45:20,377 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2020-04-18 15:45:20,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:45:20,378 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:45:20,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:20,379 INFO L82 PathProgramCache]: Analyzing trace with hash -104701845, now seen corresponding path program 2 times [2020-04-18 15:45:20,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:45:20,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144089916] [2020-04-18 15:45:20,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:45:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:45:20,445 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 15:45:20,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144089916] [2020-04-18 15:45:20,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:45:20,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:45:20,447 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:45:20,449 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:20,452 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 49 transitions. [2020-04-18 15:45:20,452 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:45:20,469 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:45:20,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:45:20,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:45:20,470 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 5 states. [2020-04-18 15:45:20,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:20,486 INFO L93 Difference]: Finished difference Result 82 states and 174 transitions. [2020-04-18 15:45:20,486 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 174 transitions. [2020-04-18 15:45:20,486 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:45:20,487 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1088601879] [2020-04-18 15:45:20,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:45:20,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:45:20,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1088601879] [2020-04-18 15:45:20,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:45:20,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:45:20,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:45:20,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:45:20,489 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-04-18 15:45:20,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:20,514 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-04-18 15:45:20,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:45:20,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-18 15:45:20,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:45:20,515 INFO L225 Difference]: With dead ends: 109 [2020-04-18 15:45:20,516 INFO L226 Difference]: Without dead ends: 109 [2020-04-18 15:45:20,516 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:45:20,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-04-18 15:45:20,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-04-18 15:45:20,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-04-18 15:45:20,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-04-18 15:45:20,521 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-04-18 15:45:20,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:45:20,521 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-04-18 15:45:20,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:45:20,522 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-04-18 15:45:20,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:45:20,522 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:45:20,522 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:45:20,523 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:45:20,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:20,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1786856379, now seen corresponding path program 1 times [2020-04-18 15:45:20,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:45:20,524 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [966554392] [2020-04-18 15:45:20,524 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:20,532 INFO L259 McrAutomatonBuilder]: Finished intersection with 298 states and 864 transitions. [2020-04-18 15:45:20,535 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 15:45:20,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:45:20,536 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:45:20,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:20,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1786856379, now seen corresponding path program 2 times [2020-04-18 15:45:20,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:45:20,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437868208] [2020-04-18 15:45:20,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:45:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:45:20,642 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 15:45:20,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437868208] [2020-04-18 15:45:20,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:45:20,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:45:20,646 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:45:20,648 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:20,658 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 85 transitions. [2020-04-18 15:45:20,658 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:45:20,682 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:45:20,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:45:20,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:45:20,684 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 5 states. [2020-04-18 15:45:20,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:20,732 INFO L93 Difference]: Finished difference Result 442 states and 1236 transitions. [2020-04-18 15:45:20,734 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1236 transitions. [2020-04-18 15:45:20,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:45:20,737 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:45:20,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:20,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1847699439, now seen corresponding path program 3 times [2020-04-18 15:45:20,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:45:20,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224005561] [2020-04-18 15:45:20,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:45:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:45:20,818 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 15:45:20,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224005561] [2020-04-18 15:45:20,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:45:20,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:45:20,820 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:45:20,822 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:20,828 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 86 transitions. [2020-04-18 15:45:20,828 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:45:20,857 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:45:20,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:45:20,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:45:20,857 INFO L87 Difference]: Start difference. First operand 442 states and 1236 transitions. Second operand 5 states. [2020-04-18 15:45:20,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:20,897 INFO L93 Difference]: Finished difference Result 448 states and 1240 transitions. [2020-04-18 15:45:20,897 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1240 transitions. [2020-04-18 15:45:20,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:45:20,903 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:45:20,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:20,903 INFO L82 PathProgramCache]: Analyzing trace with hash -739037833, now seen corresponding path program 4 times [2020-04-18 15:45:20,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:45:20,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115004696] [2020-04-18 15:45:20,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:45:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:45:20,995 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 15:45:20,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115004696] [2020-04-18 15:45:20,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:45:20,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:45:20,996 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:45:20,997 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:21,003 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 78 transitions. [2020-04-18 15:45:21,003 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:45:21,028 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:45:21,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:45:21,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:45:21,029 INFO L87 Difference]: Start difference. First operand 448 states and 1240 transitions. Second operand 5 states. [2020-04-18 15:45:21,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:21,076 INFO L93 Difference]: Finished difference Result 718 states and 1888 transitions. [2020-04-18 15:45:21,076 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1888 transitions. [2020-04-18 15:45:21,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:45:21,079 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:45:21,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:21,079 INFO L82 PathProgramCache]: Analyzing trace with hash -845563335, now seen corresponding path program 5 times [2020-04-18 15:45:21,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:45:21,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352214799] [2020-04-18 15:45:21,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:45:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:45:21,145 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 15:45:21,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352214799] [2020-04-18 15:45:21,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:45:21,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:45:21,147 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:45:21,152 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:21,162 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 38 transitions. [2020-04-18 15:45:21,162 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:45:21,284 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:45:21,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:45:21,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:45:21,285 INFO L87 Difference]: Start difference. First operand 718 states and 1888 transitions. Second operand 6 states. [2020-04-18 15:45:21,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:21,348 INFO L93 Difference]: Finished difference Result 1235 states and 3060 transitions. [2020-04-18 15:45:21,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 3060 transitions. [2020-04-18 15:45:21,353 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:45:21,353 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [966554392] [2020-04-18 15:45:21,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:45:21,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:45:21,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [966554392] [2020-04-18 15:45:21,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 15:45:21,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:45:21,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 15:45:21,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-04-18 15:45:21,356 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 13 states. [2020-04-18 15:45:22,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:22,818 INFO L93 Difference]: Finished difference Result 240 states and 478 transitions. [2020-04-18 15:45:22,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-04-18 15:45:22,818 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2020-04-18 15:45:22,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:45:22,819 INFO L225 Difference]: With dead ends: 240 [2020-04-18 15:45:22,819 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:45:22,821 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2124 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1248, Invalid=5232, Unknown=0, NotChecked=0, Total=6480 [2020-04-18 15:45:22,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:45:22,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:45:22,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:45:22,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:45:22,822 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-18 15:45:22,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:45:22,823 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:45:22,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 15:45:22,823 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:45:22,823 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:45:22,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:45:22 BasicIcfg [2020-04-18 15:45:22,828 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:45:22,829 INFO L168 Benchmark]: Toolchain (without parser) took 6218.65 ms. Allocated memory was 141.0 MB in the beginning and 308.3 MB in the end (delta: 167.2 MB). Free memory was 96.2 MB in the beginning and 195.4 MB in the end (delta: -99.2 MB). Peak memory consumption was 68.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:45:22,830 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 116.1 MB in the beginning and 115.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-18 15:45:22,831 INFO L168 Benchmark]: CACSL2BoogieTranslator took 745.94 ms. Allocated memory was 141.0 MB in the beginning and 198.2 MB in the end (delta: 57.1 MB). Free memory was 94.4 MB in the beginning and 153.4 MB in the end (delta: -59.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-04-18 15:45:22,832 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.27 ms. Allocated memory is still 198.2 MB. Free memory was 153.4 MB in the beginning and 151.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2020-04-18 15:45:22,833 INFO L168 Benchmark]: Boogie Preprocessor took 25.28 ms. Allocated memory is still 198.2 MB. Free memory was 151.2 MB in the beginning and 149.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2020-04-18 15:45:22,834 INFO L168 Benchmark]: RCFGBuilder took 442.42 ms. Allocated memory is still 198.2 MB. Free memory was 149.7 MB in the beginning and 127.6 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-18 15:45:22,834 INFO L168 Benchmark]: TraceAbstraction took 4927.07 ms. Allocated memory was 198.2 MB in the beginning and 308.3 MB in the end (delta: 110.1 MB). Free memory was 126.8 MB in the beginning and 195.4 MB in the end (delta: -68.5 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. [2020-04-18 15:45:22,839 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 141.0 MB. Free memory was 116.1 MB in the beginning and 115.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 745.94 ms. Allocated memory was 141.0 MB in the beginning and 198.2 MB in the end (delta: 57.1 MB). Free memory was 94.4 MB in the beginning and 153.4 MB in the end (delta: -59.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.27 ms. Allocated memory is still 198.2 MB. Free memory was 153.4 MB in the beginning and 151.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.28 ms. Allocated memory is still 198.2 MB. Free memory was 151.2 MB in the beginning and 149.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 442.42 ms. Allocated memory is still 198.2 MB. Free memory was 149.7 MB in the beginning and 127.6 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4927.07 ms. Allocated memory was 198.2 MB in the beginning and 308.3 MB in the end (delta: 110.1 MB). Free memory was 126.8 MB in the beginning and 195.4 MB in the end (delta: -68.5 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 640 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2315 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 106 SDtfs, 192 SDslu, 293 SDs, 0 SdLazy, 349 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 236 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2124 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 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...