/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-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:02:00,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:02:00,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:02:00,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:02:00,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:02:00,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:02:00,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:02:00,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:02:00,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:02:00,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:02:00,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:02:00,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:02:00,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:02:00,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:02:00,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:02:00,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:02:00,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:02:00,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:02:00,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:02:00,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:02:00,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:02:00,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:02:00,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:02:00,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:02:00,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:02:00,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:02:00,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:02:00,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:02:00,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:02:00,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:02:00,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:02:00,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:02:00,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:02:00,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:02:00,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:02:00,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:02:00,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:02:00,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:02:00,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:02:00,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:02:00,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:02:00,359 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-SemanticLbe-McrStrategy.epf [2020-04-18 11:02:00,381 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:02:00,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:02:00,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:02:00,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:02:00,384 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:02:00,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:02:00,385 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:02:00,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:02:00,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:02:00,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:02:00,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:02:00,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:02:00,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:02:00,387 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:02:00,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:02:00,388 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:02:00,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:02:00,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:02:00,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:02:00,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:02:00,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:02:00,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:02:00,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:02:00,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:02:00,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:02:00,390 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:02:00,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:02:00,390 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:02:00,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:02:00,391 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:02:00,686 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:02:00,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:02:00,711 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:02:00,712 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:02:00,713 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:02:00,714 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.opt.i [2020-04-18 11:02:00,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abeb7cae7/213ddc442ea8493ea844b9b6c57b460a/FLAG4db1661ae [2020-04-18 11:02:01,313 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:02:01,314 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.opt.i [2020-04-18 11:02:01,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abeb7cae7/213ddc442ea8493ea844b9b6c57b460a/FLAG4db1661ae [2020-04-18 11:02:01,620 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abeb7cae7/213ddc442ea8493ea844b9b6c57b460a [2020-04-18 11:02:01,628 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:02:01,645 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:02:01,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:02:01,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:02:01,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:02:01,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:02:01" (1/1) ... [2020-04-18 11:02:01,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e7c8290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:01, skipping insertion in model container [2020-04-18 11:02:01,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:02:01" (1/1) ... [2020-04-18 11:02:01,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:02:01,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:02:02,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:02:02,338 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:02:02,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:02:02,496 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:02:02,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:02 WrapperNode [2020-04-18 11:02:02,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:02:02,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:02:02,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:02:02,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:02:02,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:02" (1/1) ... [2020-04-18 11:02:02,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:02" (1/1) ... [2020-04-18 11:02:02,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:02:02,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:02:02,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:02:02,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:02:02,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:02" (1/1) ... [2020-04-18 11:02:02,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:02" (1/1) ... [2020-04-18 11:02:02,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:02" (1/1) ... [2020-04-18 11:02:02,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:02" (1/1) ... [2020-04-18 11:02:02,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:02" (1/1) ... [2020-04-18 11:02:02,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:02" (1/1) ... [2020-04-18 11:02:02,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:02" (1/1) ... [2020-04-18 11:02:02,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:02:02,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:02:02,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:02:02,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:02:02,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:02:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:02:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:02:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:02:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:02:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:02:02,659 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:02:02,659 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:02:02,659 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:02:02,659 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:02:02,660 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:02:02,660 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 11:02:02,660 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 11:02:02,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:02:02,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:02:02,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:02:02,662 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 11:02:03,112 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:02:03,113 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:02:03,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:02:03 BoogieIcfgContainer [2020-04-18 11:02:03,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:02:03,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:02:03,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:02:03,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:02:03,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:02:01" (1/3) ... [2020-04-18 11:02:03,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1facd305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:02:03, skipping insertion in model container [2020-04-18 11:02:03,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:02" (2/3) ... [2020-04-18 11:02:03,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1facd305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:02:03, skipping insertion in model container [2020-04-18 11:02:03,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:02:03" (3/3) ... [2020-04-18 11:02:03,126 INFO L109 eAbstractionObserver]: Analyzing ICFG safe019_pso.opt.i [2020-04-18 11:02:03,136 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:02:03,137 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:02:03,143 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:02:03,144 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:02:03,173 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,174 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,174 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,174 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,175 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,175 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,175 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,176 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,176 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,176 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,176 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,177 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,177 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,177 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,177 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,178 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,178 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,178 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,179 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,179 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,179 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,179 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,180 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,180 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,184 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,184 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,185 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,185 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,190 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,191 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,191 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,191 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,194 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,194 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,194 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,194 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,197 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,197 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,197 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,198 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:03,216 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 11:02:03,233 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:02:03,233 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:02:03,233 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:02:03,234 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:02:03,234 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:02:03,234 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:02:03,234 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:02:03,234 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:02:03,250 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 81 transitions, 182 flow [2020-04-18 11:02:03,253 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-04-18 11:02:03,305 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-04-18 11:02:03,306 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:02:03,312 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 11:02:03,315 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-04-18 11:02:03,341 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-04-18 11:02:03,341 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:02:03,342 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 11:02:03,346 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-04-18 11:02:03,347 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:02:05,388 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-04-18 11:02:05,616 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 11:02:05,704 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3093 [2020-04-18 11:02:05,705 INFO L214 etLargeBlockEncoding]: Total number of compositions: 65 [2020-04-18 11:02:05,712 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-04-18 11:02:05,773 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-04-18 11:02:05,776 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-04-18 11:02:05,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:02:05,786 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:05,787 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:05,788 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:05,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:05,795 INFO L82 PathProgramCache]: Analyzing trace with hash -2005095105, now seen corresponding path program 1 times [2020-04-18 11:02:05,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:05,803 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1202471641] [2020-04-18 11:02:05,821 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:05,837 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 11:02:05,839 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-04-18 11:02:05,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:02:05,840 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:05,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:05,840 INFO L82 PathProgramCache]: Analyzing trace with hash -2005095105, now seen corresponding path program 2 times [2020-04-18 11:02:05,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:05,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906470047] [2020-04-18 11:02:05,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:06,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:06,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906470047] [2020-04-18 11:02:06,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:06,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:02:06,112 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:06,113 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:06,116 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 11:02:06,117 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:06,136 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:02:06,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:02:06,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:02:06,145 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-04-18 11:02:06,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:06,151 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-04-18 11:02:06,155 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-04-18 11:02:06,155 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:06,156 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1202471641] [2020-04-18 11:02:06,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:06,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:02:06,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1202471641] [2020-04-18 11:02:06,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:02:06,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:06,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:02:06,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:02:06,176 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-04-18 11:02:06,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:06,252 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-04-18 11:02:06,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:02:06,254 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 11:02:06,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:06,276 INFO L225 Difference]: With dead ends: 670 [2020-04-18 11:02:06,276 INFO L226 Difference]: Without dead ends: 526 [2020-04-18 11:02:06,278 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:02:06,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-04-18 11:02:06,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-04-18 11:02:06,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-04-18 11:02:06,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-04-18 11:02:06,389 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-04-18 11:02:06,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:06,391 INFO L479 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-04-18 11:02:06,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:02:06,391 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-04-18 11:02:06,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:02:06,394 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:06,394 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:06,395 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:06,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:06,395 INFO L82 PathProgramCache]: Analyzing trace with hash -2027599793, now seen corresponding path program 1 times [2020-04-18 11:02:06,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:06,396 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1001174431] [2020-04-18 11:02:06,396 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:06,397 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 19 transitions. [2020-04-18 11:02:06,398 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 11:02:06,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:02:06,400 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:06,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:06,401 INFO L82 PathProgramCache]: Analyzing trace with hash -2027599793, now seen corresponding path program 2 times [2020-04-18 11:02:06,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:06,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741830163] [2020-04-18 11:02:06,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:06,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:06,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741830163] [2020-04-18 11:02:06,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:06,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:02:06,503 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:06,504 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:06,506 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 17 transitions. [2020-04-18 11:02:06,507 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:06,545 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:02:06,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:02:06,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:02:06,546 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 5 states. [2020-04-18 11:02:06,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:06,559 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2020-04-18 11:02:06,559 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-04-18 11:02:06,559 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:06,560 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1001174431] [2020-04-18 11:02:06,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:06,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:02:06,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1001174431] [2020-04-18 11:02:06,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:02:06,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:06,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:02:06,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:02:06,562 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 5 states. [2020-04-18 11:02:06,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:06,594 INFO L93 Difference]: Finished difference Result 682 states and 2180 transitions. [2020-04-18 11:02:06,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:02:06,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 11:02:06,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:06,599 INFO L225 Difference]: With dead ends: 682 [2020-04-18 11:02:06,599 INFO L226 Difference]: Without dead ends: 394 [2020-04-18 11:02:06,600 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:02:06,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-04-18 11:02:06,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-04-18 11:02:06,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-04-18 11:02:06,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1224 transitions. [2020-04-18 11:02:06,623 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1224 transitions. Word has length 11 [2020-04-18 11:02:06,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:06,624 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 1224 transitions. [2020-04-18 11:02:06,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:02:06,624 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1224 transitions. [2020-04-18 11:02:06,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:02:06,626 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:06,626 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:06,626 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:06,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:06,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1004375926, now seen corresponding path program 1 times [2020-04-18 11:02:06,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:06,627 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1997517580] [2020-04-18 11:02:06,628 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:06,628 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 46 transitions. [2020-04-18 11:02:06,629 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 11:02:06,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:02:06,630 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:06,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:06,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1004375926, now seen corresponding path program 2 times [2020-04-18 11:02:06,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:06,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354884485] [2020-04-18 11:02:06,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:06,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:06,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354884485] [2020-04-18 11:02:06,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:06,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:02:06,721 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:06,722 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:06,725 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 11:02:06,725 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:06,728 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:02:06,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:02:06,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:02:06,729 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 11:02:06,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:06,731 INFO L93 Difference]: Finished difference Result 28 states and 46 transitions. [2020-04-18 11:02:06,731 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 46 transitions. [2020-04-18 11:02:06,731 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:06,732 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1997517580] [2020-04-18 11:02:06,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:06,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:02:06,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1997517580] [2020-04-18 11:02:06,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:02:06,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:06,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:02:06,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:02:06,736 INFO L87 Difference]: Start difference. First operand 394 states and 1224 transitions. Second operand 3 states. [2020-04-18 11:02:06,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:06,747 INFO L93 Difference]: Finished difference Result 376 states and 1155 transitions. [2020-04-18 11:02:06,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:02:06,747 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-04-18 11:02:06,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:06,750 INFO L225 Difference]: With dead ends: 376 [2020-04-18 11:02:06,750 INFO L226 Difference]: Without dead ends: 376 [2020-04-18 11:02:06,751 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:02:06,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-04-18 11:02:06,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2020-04-18 11:02:06,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-04-18 11:02:06,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1155 transitions. [2020-04-18 11:02:06,766 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1155 transitions. Word has length 12 [2020-04-18 11:02:06,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:06,767 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 1155 transitions. [2020-04-18 11:02:06,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:02:06,767 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1155 transitions. [2020-04-18 11:02:06,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:02:06,772 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:06,772 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:06,773 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:06,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:06,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1070016734, now seen corresponding path program 1 times [2020-04-18 11:02:06,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:06,774 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1115004696] [2020-04-18 11:02:06,774 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:06,776 INFO L259 McrAutomatonBuilder]: Finished intersection with 54 states and 116 transitions. [2020-04-18 11:02:06,778 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-04-18 11:02:06,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:02:06,779 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:06,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:06,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1070016734, now seen corresponding path program 2 times [2020-04-18 11:02:06,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:06,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447668220] [2020-04-18 11:02:06,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:06,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:06,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447668220] [2020-04-18 11:02:06,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:06,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:02:06,849 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:06,853 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:06,859 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 71 transitions. [2020-04-18 11:02:06,859 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:06,976 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 11:02:06,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:02:06,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:02:06,976 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 7 states. [2020-04-18 11:02:06,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:06,992 INFO L93 Difference]: Finished difference Result 54 states and 116 transitions. [2020-04-18 11:02:06,992 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 116 transitions. [2020-04-18 11:02:06,993 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:06,995 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1115004696] [2020-04-18 11:02:06,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:06,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:02:06,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1115004696] [2020-04-18 11:02:06,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 11:02:06,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:06,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:02:06,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:02:06,998 INFO L87 Difference]: Start difference. First operand 376 states and 1155 transitions. Second operand 7 states. [2020-04-18 11:02:07,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:07,046 INFO L93 Difference]: Finished difference Result 526 states and 1582 transitions. [2020-04-18 11:02:07,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:02:07,047 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-18 11:02:07,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:07,050 INFO L225 Difference]: With dead ends: 526 [2020-04-18 11:02:07,050 INFO L226 Difference]: Without dead ends: 286 [2020-04-18 11:02:07,052 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:02:07,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-04-18 11:02:07,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2020-04-18 11:02:07,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-04-18 11:02:07,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 851 transitions. [2020-04-18 11:02:07,064 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 851 transitions. Word has length 13 [2020-04-18 11:02:07,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:07,064 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 851 transitions. [2020-04-18 11:02:07,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 11:02:07,064 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 851 transitions. [2020-04-18 11:02:07,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:02:07,065 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:07,065 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:07,066 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:07,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:07,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1152221153, now seen corresponding path program 1 times [2020-04-18 11:02:07,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:07,067 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1846697965] [2020-04-18 11:02:07,068 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:07,070 INFO L259 McrAutomatonBuilder]: Finished intersection with 74 states and 172 transitions. [2020-04-18 11:02:07,073 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 11:02:07,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:02:07,074 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:07,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:07,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1152221153, now seen corresponding path program 2 times [2020-04-18 11:02:07,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:07,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729618443] [2020-04-18 11:02:07,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:07,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:07,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729618443] [2020-04-18 11:02:07,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:07,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:02:07,139 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:07,141 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:07,145 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 42 transitions. [2020-04-18 11:02:07,145 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:07,189 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:02:07,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:02:07,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:02:07,190 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 6 states. [2020-04-18 11:02:07,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:07,229 INFO L93 Difference]: Finished difference Result 88 states and 189 transitions. [2020-04-18 11:02:07,229 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 189 transitions. [2020-04-18 11:02:07,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:02:07,230 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:02:07,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:07,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1189219793, now seen corresponding path program 3 times [2020-04-18 11:02:07,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:07,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809298794] [2020-04-18 11:02:07,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:07,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:07,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809298794] [2020-04-18 11:02:07,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:07,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:02:07,281 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:07,282 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:07,287 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 72 transitions. [2020-04-18 11:02:07,287 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:07,431 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 11:02:07,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:02:07,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:02:07,432 INFO L87 Difference]: Start difference. First operand 88 states and 189 transitions. Second operand 7 states. [2020-04-18 11:02:07,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:07,466 INFO L93 Difference]: Finished difference Result 90 states and 190 transitions. [2020-04-18 11:02:07,466 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 190 transitions. [2020-04-18 11:02:07,466 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:07,467 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1846697965] [2020-04-18 11:02:07,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:07,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:02:07,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1846697965] [2020-04-18 11:02:07,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:02:07,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:07,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:02:07,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:02:07,469 INFO L87 Difference]: Start difference. First operand 286 states and 851 transitions. Second operand 11 states. [2020-04-18 11:02:07,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:07,548 INFO L93 Difference]: Finished difference Result 458 states and 1291 transitions. [2020-04-18 11:02:07,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 11:02:07,549 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-04-18 11:02:07,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:07,551 INFO L225 Difference]: With dead ends: 458 [2020-04-18 11:02:07,551 INFO L226 Difference]: Without dead ends: 250 [2020-04-18 11:02:07,552 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-04-18 11:02:07,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-04-18 11:02:07,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 226. [2020-04-18 11:02:07,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-04-18 11:02:07,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 619 transitions. [2020-04-18 11:02:07,561 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 619 transitions. Word has length 14 [2020-04-18 11:02:07,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:07,562 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 619 transitions. [2020-04-18 11:02:07,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:02:07,562 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 619 transitions. [2020-04-18 11:02:07,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:02:07,562 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:07,563 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:07,563 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:07,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:07,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1162350155, now seen corresponding path program 1 times [2020-04-18 11:02:07,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:07,564 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [329381120] [2020-04-18 11:02:07,564 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:07,567 INFO L259 McrAutomatonBuilder]: Finished intersection with 78 states and 192 transitions. [2020-04-18 11:02:07,568 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-04-18 11:02:07,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:02:07,569 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:07,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:07,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1189219835, now seen corresponding path program 2 times [2020-04-18 11:02:07,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:07,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239006492] [2020-04-18 11:02:07,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:07,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:07,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239006492] [2020-04-18 11:02:07,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:07,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:02:07,628 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:07,632 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:07,644 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 72 transitions. [2020-04-18 11:02:07,644 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:07,790 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 11:02:07,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:02:07,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:02:07,791 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 7 states. [2020-04-18 11:02:07,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:07,822 INFO L93 Difference]: Finished difference Result 90 states and 212 transitions. [2020-04-18 11:02:07,822 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 212 transitions. [2020-04-18 11:02:07,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:02:07,823 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:02:07,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:07,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1162350155, now seen corresponding path program 3 times [2020-04-18 11:02:07,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:07,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478329920] [2020-04-18 11:02:07,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:07,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:07,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478329920] [2020-04-18 11:02:07,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:07,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:02:07,918 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:07,920 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:07,924 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 54 transitions. [2020-04-18 11:02:07,924 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:07,955 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:02:07,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:02:07,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:02:07,959 INFO L87 Difference]: Start difference. First operand 90 states and 212 transitions. Second operand 4 states. [2020-04-18 11:02:07,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:07,975 INFO L93 Difference]: Finished difference Result 90 states and 212 transitions. [2020-04-18 11:02:07,975 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 212 transitions. [2020-04-18 11:02:07,976 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:07,977 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [329381120] [2020-04-18 11:02:07,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:07,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:02:07,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [329381120] [2020-04-18 11:02:07,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 11:02:07,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:07,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:02:07,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:02:07,979 INFO L87 Difference]: Start difference. First operand 226 states and 619 transitions. Second operand 9 states. [2020-04-18 11:02:08,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:08,151 INFO L93 Difference]: Finished difference Result 287 states and 728 transitions. [2020-04-18 11:02:08,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 11:02:08,152 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-04-18 11:02:08,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:08,154 INFO L225 Difference]: With dead ends: 287 [2020-04-18 11:02:08,154 INFO L226 Difference]: Without dead ends: 206 [2020-04-18 11:02:08,154 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:02:08,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-04-18 11:02:08,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-04-18 11:02:08,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-04-18 11:02:08,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 530 transitions. [2020-04-18 11:02:08,162 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 530 transitions. Word has length 14 [2020-04-18 11:02:08,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:08,163 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 530 transitions. [2020-04-18 11:02:08,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 11:02:08,163 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 530 transitions. [2020-04-18 11:02:08,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:02:08,164 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:08,164 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:08,165 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:08,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:08,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1647463604, now seen corresponding path program 1 times [2020-04-18 11:02:08,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:08,166 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1332262264] [2020-04-18 11:02:08,166 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:08,171 INFO L259 McrAutomatonBuilder]: Finished intersection with 102 states and 268 transitions. [2020-04-18 11:02:08,172 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states. [2020-04-18 11:02:08,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:02:08,173 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:08,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:08,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1788890552, now seen corresponding path program 2 times [2020-04-18 11:02:08,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:08,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016671708] [2020-04-18 11:02:08,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:08,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:08,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016671708] [2020-04-18 11:02:08,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:08,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:02:08,228 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:08,230 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:08,240 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 73 transitions. [2020-04-18 11:02:08,240 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:08,326 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 11:02:08,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:02:08,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:02:08,327 INFO L87 Difference]: Start difference. First operand 102 states. Second operand 7 states. [2020-04-18 11:02:08,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:08,368 INFO L93 Difference]: Finished difference Result 126 states and 320 transitions. [2020-04-18 11:02:08,368 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 320 transitions. [2020-04-18 11:02:08,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:02:08,369 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:02:08,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:08,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1673122304, now seen corresponding path program 3 times [2020-04-18 11:02:08,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:08,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096565455] [2020-04-18 11:02:08,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:08,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:08,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096565455] [2020-04-18 11:02:08,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:08,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:02:08,456 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:08,457 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:08,467 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 69 transitions. [2020-04-18 11:02:08,467 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:08,494 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:02:08,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:02:08,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:02:08,495 INFO L87 Difference]: Start difference. First operand 126 states and 320 transitions. Second operand 4 states. [2020-04-18 11:02:08,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:08,517 INFO L93 Difference]: Finished difference Result 150 states and 364 transitions. [2020-04-18 11:02:08,518 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 364 transitions. [2020-04-18 11:02:08,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:02:08,519 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:02:08,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:08,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1647463604, now seen corresponding path program 4 times [2020-04-18 11:02:08,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:08,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493052381] [2020-04-18 11:02:08,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:08,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:08,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493052381] [2020-04-18 11:02:08,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:08,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:02:08,578 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:08,583 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:08,590 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 59 transitions. [2020-04-18 11:02:08,590 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:08,608 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:02:08,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:02:08,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:02:08,608 INFO L87 Difference]: Start difference. First operand 150 states and 364 transitions. Second operand 5 states. [2020-04-18 11:02:08,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:08,632 INFO L93 Difference]: Finished difference Result 150 states and 364 transitions. [2020-04-18 11:02:08,633 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 364 transitions. [2020-04-18 11:02:08,633 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:08,634 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1332262264] [2020-04-18 11:02:08,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:08,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:02:08,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1332262264] [2020-04-18 11:02:08,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 11:02:08,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:08,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 11:02:08,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:02:08,636 INFO L87 Difference]: Start difference. First operand 206 states and 530 transitions. Second operand 10 states. [2020-04-18 11:02:08,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:08,862 INFO L93 Difference]: Finished difference Result 227 states and 530 transitions. [2020-04-18 11:02:08,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-18 11:02:08,863 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-04-18 11:02:08,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:08,864 INFO L225 Difference]: With dead ends: 227 [2020-04-18 11:02:08,864 INFO L226 Difference]: Without dead ends: 162 [2020-04-18 11:02:08,865 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-04-18 11:02:08,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-04-18 11:02:08,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-04-18 11:02:08,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-04-18 11:02:08,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 369 transitions. [2020-04-18 11:02:08,871 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 369 transitions. Word has length 15 [2020-04-18 11:02:08,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:08,871 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 369 transitions. [2020-04-18 11:02:08,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 11:02:08,871 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 369 transitions. [2020-04-18 11:02:08,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:02:08,872 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:08,872 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:08,872 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:08,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:08,872 INFO L82 PathProgramCache]: Analyzing trace with hash -469082430, now seen corresponding path program 1 times [2020-04-18 11:02:08,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:08,873 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [787901270] [2020-04-18 11:02:08,873 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:08,876 INFO L259 McrAutomatonBuilder]: Finished intersection with 150 states and 422 transitions. [2020-04-18 11:02:08,877 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states. [2020-04-18 11:02:08,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:02:08,880 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:08,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:08,881 INFO L82 PathProgramCache]: Analyzing trace with hash 378967974, now seen corresponding path program 2 times [2020-04-18 11:02:08,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:08,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303867537] [2020-04-18 11:02:08,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:08,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:08,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303867537] [2020-04-18 11:02:08,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:08,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:02:08,912 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:08,914 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:08,919 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 74 transitions. [2020-04-18 11:02:08,919 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:08,999 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 11:02:08,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:02:09,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:02:09,000 INFO L87 Difference]: Start difference. First operand 150 states. Second operand 7 states. [2020-04-18 11:02:09,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:09,028 INFO L93 Difference]: Finished difference Result 186 states and 506 transitions. [2020-04-18 11:02:09,028 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 506 transitions. [2020-04-18 11:02:09,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:02:09,029 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:02:09,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:09,029 INFO L82 PathProgramCache]: Analyzing trace with hash 327184110, now seen corresponding path program 3 times [2020-04-18 11:02:09,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:09,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580661058] [2020-04-18 11:02:09,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:09,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:09,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580661058] [2020-04-18 11:02:09,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:09,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:02:09,079 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:09,080 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:09,086 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 79 transitions. [2020-04-18 11:02:09,087 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:09,113 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:02:09,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:02:09,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:02:09,115 INFO L87 Difference]: Start difference. First operand 186 states and 506 transitions. Second operand 4 states. [2020-04-18 11:02:09,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:09,143 INFO L93 Difference]: Finished difference Result 242 states and 626 transitions. [2020-04-18 11:02:09,143 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 626 transitions. [2020-04-18 11:02:09,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:02:09,144 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:02:09,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:09,145 INFO L82 PathProgramCache]: Analyzing trace with hash -468235590, now seen corresponding path program 4 times [2020-04-18 11:02:09,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:09,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612933588] [2020-04-18 11:02:09,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:09,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:09,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612933588] [2020-04-18 11:02:09,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:09,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:02:09,215 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:09,216 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:09,222 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 69 transitions. [2020-04-18 11:02:09,222 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:09,236 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:02:09,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:02:09,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:02:09,237 INFO L87 Difference]: Start difference. First operand 242 states and 626 transitions. Second operand 5 states. [2020-04-18 11:02:09,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:09,286 INFO L93 Difference]: Finished difference Result 254 states and 642 transitions. [2020-04-18 11:02:09,286 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 642 transitions. [2020-04-18 11:02:09,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:02:09,287 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:02:09,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:09,288 INFO L82 PathProgramCache]: Analyzing trace with hash -469082430, now seen corresponding path program 5 times [2020-04-18 11:02:09,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:09,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539116885] [2020-04-18 11:02:09,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:09,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:09,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539116885] [2020-04-18 11:02:09,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:09,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:02:09,370 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:09,372 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:09,377 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 62 transitions. [2020-04-18 11:02:09,378 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:09,394 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:02:09,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:02:09,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-04-18 11:02:09,394 INFO L87 Difference]: Start difference. First operand 254 states and 642 transitions. Second operand 6 states. [2020-04-18 11:02:09,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:09,444 INFO L93 Difference]: Finished difference Result 254 states and 642 transitions. [2020-04-18 11:02:09,444 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 642 transitions. [2020-04-18 11:02:09,445 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:09,446 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [787901270] [2020-04-18 11:02:09,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:09,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:02:09,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [787901270] [2020-04-18 11:02:09,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:02:09,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:09,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:02:09,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-04-18 11:02:09,450 INFO L87 Difference]: Start difference. First operand 162 states and 369 transitions. Second operand 11 states. [2020-04-18 11:02:09,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:09,657 INFO L93 Difference]: Finished difference Result 158 states and 337 transitions. [2020-04-18 11:02:09,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 11:02:09,658 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2020-04-18 11:02:09,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:09,659 INFO L225 Difference]: With dead ends: 158 [2020-04-18 11:02:09,659 INFO L226 Difference]: Without dead ends: 125 [2020-04-18 11:02:09,660 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2020-04-18 11:02:09,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-04-18 11:02:09,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-04-18 11:02:09,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-04-18 11:02:09,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-04-18 11:02:09,664 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 16 [2020-04-18 11:02:09,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:09,665 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-04-18 11:02:09,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:02:09,665 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-04-18 11:02:09,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:02:09,666 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:09,666 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 11:02:09,666 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:09,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:09,667 INFO L82 PathProgramCache]: Analyzing trace with hash 483879941, now seen corresponding path program 1 times [2020-04-18 11:02:09,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:09,668 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [418754075] [2020-04-18 11:02:09,669 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:09,675 INFO L259 McrAutomatonBuilder]: Finished intersection with 282 states and 876 transitions. [2020-04-18 11:02:09,677 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states. [2020-04-18 11:02:09,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:02:09,679 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:09,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:09,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1331930345, now seen corresponding path program 2 times [2020-04-18 11:02:09,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:09,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001353959] [2020-04-18 11:02:09,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:09,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:09,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001353959] [2020-04-18 11:02:09,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:09,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:02:09,721 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:09,725 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:09,731 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 74 transitions. [2020-04-18 11:02:09,732 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:09,763 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:02:09,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:02:09,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:02:09,764 INFO L87 Difference]: Start difference. First operand 282 states. Second operand 6 states. [2020-04-18 11:02:09,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:09,829 INFO L93 Difference]: Finished difference Result 492 states and 1409 transitions. [2020-04-18 11:02:09,829 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1409 transitions. [2020-04-18 11:02:09,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:02:09,830 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:02:09,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:09,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1281016031, now seen corresponding path program 3 times [2020-04-18 11:02:09,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:09,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6962671] [2020-04-18 11:02:09,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:09,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:09,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6962671] [2020-04-18 11:02:09,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:09,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:02:09,877 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:09,880 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:09,885 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 55 transitions. [2020-04-18 11:02:09,886 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:09,893 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:02:09,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:02:09,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:02:09,894 INFO L87 Difference]: Start difference. First operand 492 states and 1409 transitions. Second operand 3 states. [2020-04-18 11:02:09,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:09,900 INFO L93 Difference]: Finished difference Result 558 states and 1537 transitions. [2020-04-18 11:02:09,900 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 1537 transitions. [2020-04-18 11:02:09,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:02:09,901 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:02:09,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:09,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1280146481, now seen corresponding path program 4 times [2020-04-18 11:02:09,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:09,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741177787] [2020-04-18 11:02:09,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:09,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:09,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741177787] [2020-04-18 11:02:09,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:09,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:02:09,955 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:09,957 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:09,963 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 64 transitions. [2020-04-18 11:02:09,963 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:10,026 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:02:10,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:02:10,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:02:10,027 INFO L87 Difference]: Start difference. First operand 558 states and 1537 transitions. Second operand 6 states. [2020-04-18 11:02:10,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:10,118 INFO L93 Difference]: Finished difference Result 642 states and 1670 transitions. [2020-04-18 11:02:10,118 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1670 transitions. [2020-04-18 11:02:10,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:02:10,120 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:02:10,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:10,121 INFO L82 PathProgramCache]: Analyzing trace with hash 484726781, now seen corresponding path program 5 times [2020-04-18 11:02:10,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:10,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075023055] [2020-04-18 11:02:10,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:10,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:10,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075023055] [2020-04-18 11:02:10,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:10,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:02:10,192 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:10,194 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:10,200 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 60 transitions. [2020-04-18 11:02:10,200 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:10,234 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:02:10,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:02:10,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-04-18 11:02:10,235 INFO L87 Difference]: Start difference. First operand 642 states and 1670 transitions. Second operand 7 states. [2020-04-18 11:02:10,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:10,351 INFO L93 Difference]: Finished difference Result 654 states and 1680 transitions. [2020-04-18 11:02:10,351 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1680 transitions. [2020-04-18 11:02:10,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:02:10,354 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:02:10,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:10,354 INFO L82 PathProgramCache]: Analyzing trace with hash 483879941, now seen corresponding path program 6 times [2020-04-18 11:02:10,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:10,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076585478] [2020-04-18 11:02:10,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:10,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:10,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076585478] [2020-04-18 11:02:10,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:10,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:02:10,438 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:10,440 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:10,449 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 58 transitions. [2020-04-18 11:02:10,449 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:10,488 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:02:10,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:02:10,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:02:10,488 INFO L87 Difference]: Start difference. First operand 654 states and 1680 transitions. Second operand 8 states. [2020-04-18 11:02:10,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:10,601 INFO L93 Difference]: Finished difference Result 654 states and 1680 transitions. [2020-04-18 11:02:10,601 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1680 transitions. [2020-04-18 11:02:10,605 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:10,605 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [418754075] [2020-04-18 11:02:10,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:10,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:02:10,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [418754075] [2020-04-18 11:02:10,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 11:02:10,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:10,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:02:10,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:02:10,607 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 13 states. [2020-04-18 11:02:10,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:10,868 INFO L93 Difference]: Finished difference Result 120 states and 253 transitions. [2020-04-18 11:02:10,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 11:02:10,869 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2020-04-18 11:02:10,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:10,870 INFO L225 Difference]: With dead ends: 120 [2020-04-18 11:02:10,870 INFO L226 Difference]: Without dead ends: 71 [2020-04-18 11:02:10,870 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2020-04-18 11:02:10,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-04-18 11:02:10,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-04-18 11:02:10,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-04-18 11:02:10,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2020-04-18 11:02:10,874 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 18 [2020-04-18 11:02:10,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:10,874 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2020-04-18 11:02:10,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 11:02:10,875 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2020-04-18 11:02:10,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 11:02:10,875 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:10,875 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] [2020-04-18 11:02:10,875 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:10,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:10,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1087350585, now seen corresponding path program 1 times [2020-04-18 11:02:10,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:10,879 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1962753205] [2020-04-18 11:02:10,880 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:10,889 INFO L259 McrAutomatonBuilder]: Finished intersection with 562 states and 1890 transitions. [2020-04-18 11:02:10,894 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states. [2020-04-18 11:02:10,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 11:02:10,897 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:10,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:10,897 INFO L82 PathProgramCache]: Analyzing trace with hash 106505205, now seen corresponding path program 2 times [2020-04-18 11:02:10,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:10,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169963009] [2020-04-18 11:02:10,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:10,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:10,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169963009] [2020-04-18 11:02:10,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:10,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:02:10,934 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:10,937 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:10,947 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 88 transitions. [2020-04-18 11:02:10,947 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:10,969 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:02:10,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:02:10,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:02:10,970 INFO L87 Difference]: Start difference. First operand 562 states. Second operand 5 states. [2020-04-18 11:02:11,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:11,005 INFO L93 Difference]: Finished difference Result 794 states and 2554 transitions. [2020-04-18 11:02:11,005 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 2554 transitions. [2020-04-18 11:02:11,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 11:02:11,008 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:02:11,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:11,008 INFO L82 PathProgramCache]: Analyzing trace with hash 36358109, now seen corresponding path program 3 times [2020-04-18 11:02:11,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:11,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5099119] [2020-04-18 11:02:11,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:11,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:11,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5099119] [2020-04-18 11:02:11,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:11,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:02:11,054 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:11,055 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:11,062 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 72 transitions. [2020-04-18 11:02:11,063 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:11,110 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:02:11,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:02:11,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:02:11,111 INFO L87 Difference]: Start difference. First operand 794 states and 2554 transitions. Second operand 6 states. [2020-04-18 11:02:11,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:11,149 INFO L93 Difference]: Finished difference Result 1564 states and 4759 transitions. [2020-04-18 11:02:11,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 4759 transitions. [2020-04-18 11:02:11,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 11:02:11,153 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:02:11,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:11,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1599267629, now seen corresponding path program 4 times [2020-04-18 11:02:11,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:11,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088657103] [2020-04-18 11:02:11,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:11,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:11,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088657103] [2020-04-18 11:02:11,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:11,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:02:11,179 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:11,181 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:11,187 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 55 transitions. [2020-04-18 11:02:11,187 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:11,201 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:02:11,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:02:11,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:02:11,201 INFO L87 Difference]: Start difference. First operand 1564 states and 4759 transitions. Second operand 3 states. [2020-04-18 11:02:11,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:11,211 INFO L93 Difference]: Finished difference Result 1850 states and 5475 transitions. [2020-04-18 11:02:11,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 5475 transitions. [2020-04-18 11:02:11,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 11:02:11,216 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:02:11,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:11,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1860062117, now seen corresponding path program 5 times [2020-04-18 11:02:11,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:11,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795757337] [2020-04-18 11:02:11,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:11,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:11,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795757337] [2020-04-18 11:02:11,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:11,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:02:11,270 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:11,273 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:11,280 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 64 transitions. [2020-04-18 11:02:11,280 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:11,347 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:02:11,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:02:11,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-04-18 11:02:11,347 INFO L87 Difference]: Start difference. First operand 1850 states and 5475 transitions. Second operand 6 states. [2020-04-18 11:02:11,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:11,495 INFO L93 Difference]: Finished difference Result 2251 states and 6283 transitions. [2020-04-18 11:02:11,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 6283 transitions. [2020-04-18 11:02:11,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 11:02:11,501 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:02:11,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:11,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1965909105, now seen corresponding path program 6 times [2020-04-18 11:02:11,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:11,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978820451] [2020-04-18 11:02:11,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:11,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:11,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978820451] [2020-04-18 11:02:11,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:11,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:02:11,544 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:11,546 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:11,553 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 58 transitions. [2020-04-18 11:02:11,553 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:11,594 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:02:11,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:02:11,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-04-18 11:02:11,595 INFO L87 Difference]: Start difference. First operand 2251 states and 6283 transitions. Second operand 7 states. [2020-04-18 11:02:11,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:11,774 INFO L93 Difference]: Finished difference Result 2355 states and 6427 transitions. [2020-04-18 11:02:11,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 6427 transitions. [2020-04-18 11:02:11,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 11:02:11,778 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:02:11,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:11,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1152160785, now seen corresponding path program 7 times [2020-04-18 11:02:11,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:11,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496273946] [2020-04-18 11:02:11,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:11,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:11,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496273946] [2020-04-18 11:02:11,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:11,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:02:11,832 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:11,834 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:11,841 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 60 transitions. [2020-04-18 11:02:11,841 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:11,883 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:02:11,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:02:11,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2020-04-18 11:02:11,884 INFO L87 Difference]: Start difference. First operand 2355 states and 6427 transitions. Second operand 8 states. [2020-04-18 11:02:12,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:12,138 INFO L93 Difference]: Finished difference Result 2367 states and 6435 transitions. [2020-04-18 11:02:12,138 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 6435 transitions. [2020-04-18 11:02:12,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 11:02:12,142 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:02:12,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:12,143 INFO L82 PathProgramCache]: Analyzing trace with hash 16625717, now seen corresponding path program 8 times [2020-04-18 11:02:12,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:12,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970936820] [2020-04-18 11:02:12,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:12,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:12,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970936820] [2020-04-18 11:02:12,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:12,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:02:12,197 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:12,199 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:12,205 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 58 transitions. [2020-04-18 11:02:12,206 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:12,280 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:02:12,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:02:12,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:02:12,280 INFO L87 Difference]: Start difference. First operand 2367 states and 6435 transitions. Second operand 5 states. [2020-04-18 11:02:12,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:12,320 INFO L93 Difference]: Finished difference Result 3755 states and 9942 transitions. [2020-04-18 11:02:12,320 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 9942 transitions. [2020-04-18 11:02:12,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 11:02:12,327 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 11:02:12,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:12,327 INFO L82 PathProgramCache]: Analyzing trace with hash 216357237, now seen corresponding path program 9 times [2020-04-18 11:02:12,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:12,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036088959] [2020-04-18 11:02:12,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:12,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:02:12,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036088959] [2020-04-18 11:02:12,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:12,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:02:12,362 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:12,364 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:12,374 INFO L259 McrAutomatonBuilder]: Finished intersection with 69 states and 125 transitions. [2020-04-18 11:02:12,374 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:12,548 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:02:12,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:02:12,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2020-04-18 11:02:12,550 INFO L87 Difference]: Start difference. First operand 3755 states and 9942 transitions. Second operand 7 states. [2020-04-18 11:02:12,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:12,613 INFO L93 Difference]: Finished difference Result 5235 states and 13539 transitions. [2020-04-18 11:02:12,613 INFO L276 IsEmpty]: Start isEmpty. Operand 5235 states and 13539 transitions. [2020-04-18 11:02:12,623 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:12,623 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1962753205] [2020-04-18 11:02:12,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:12,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:02:12,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1962753205] [2020-04-18 11:02:12,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-04-18 11:02:12,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:12,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-04-18 11:02:12,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=816, Unknown=0, NotChecked=0, Total=930 [2020-04-18 11:02:12,625 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand 23 states. [2020-04-18 11:02:13,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:13,268 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2020-04-18 11:02:13,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 11:02:13,270 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 20 [2020-04-18 11:02:13,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:13,271 INFO L225 Difference]: With dead ends: 70 [2020-04-18 11:02:13,271 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:02:13,272 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 161 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=419, Invalid=2131, Unknown=0, NotChecked=0, Total=2550 [2020-04-18 11:02:13,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:02:13,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:02:13,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:02:13,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:02:13,273 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-04-18 11:02:13,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:13,274 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:02:13,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-04-18 11:02:13,274 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:02:13,274 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:13,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:02:13 BasicIcfg [2020-04-18 11:02:13,277 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:02:13,279 INFO L168 Benchmark]: Toolchain (without parser) took 11649.04 ms. Allocated memory was 137.9 MB in the beginning and 350.2 MB in the end (delta: 212.3 MB). Free memory was 102.0 MB in the beginning and 107.3 MB in the end (delta: -5.4 MB). Peak memory consumption was 207.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:02:13,279 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 11:02:13,280 INFO L168 Benchmark]: CACSL2BoogieTranslator took 851.80 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 100.0 MB in the beginning and 157.1 MB in the end (delta: -57.2 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-04-18 11:02:13,280 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.09 ms. Allocated memory is still 202.4 MB. Free memory was 157.1 MB in the beginning and 154.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:02:13,281 INFO L168 Benchmark]: Boogie Preprocessor took 36.76 ms. Allocated memory is still 202.4 MB. Free memory was 154.9 MB in the beginning and 153.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 11:02:13,281 INFO L168 Benchmark]: RCFGBuilder took 523.13 ms. Allocated memory is still 202.4 MB. Free memory was 152.8 MB in the beginning and 128.7 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:02:13,282 INFO L168 Benchmark]: TraceAbstraction took 10158.45 ms. Allocated memory was 202.4 MB in the beginning and 350.2 MB in the end (delta: 147.8 MB). Free memory was 128.7 MB in the beginning and 107.3 MB in the end (delta: 21.4 MB). Peak memory consumption was 169.2 MB. Max. memory is 7.1 GB. [2020-04-18 11:02:13,285 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 851.80 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 100.0 MB in the beginning and 157.1 MB in the end (delta: -57.2 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.09 ms. Allocated memory is still 202.4 MB. Free memory was 157.1 MB in the beginning and 154.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.76 ms. Allocated memory is still 202.4 MB. Free memory was 154.9 MB in the beginning and 153.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 523.13 ms. Allocated memory is still 202.4 MB. Free memory was 152.8 MB in the beginning and 128.7 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10158.45 ms. Allocated memory was 202.4 MB in the beginning and 350.2 MB in the end (delta: 147.8 MB). Free memory was 128.7 MB in the beginning and 107.3 MB in the end (delta: 21.4 MB). Peak memory consumption was 169.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.4s, 92 ProgramPointsBefore, 38 ProgramPointsAfterwards, 81 TransitionsBefore, 25 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 951 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 25 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 0 MoverChecksTotal, 3093 CheckedPairsTotal, 65 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 5 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 212 SDtfs, 588 SDslu, 774 SDs, 0 SdLazy, 696 SolverSat, 212 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 648 GetRequests, 494 SyntacticMatches, 4 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred 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, 10 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...