/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/thin002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:30:41,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:30:41,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:30:41,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:30:41,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:30:41,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:30:41,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:30:41,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:30:41,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:30:41,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:30:41,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:30:41,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:30:41,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:30:41,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:30:41,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:30:41,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:30:41,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:30:41,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:30:41,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:30:41,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:30:41,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:30:41,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:30:41,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:30:41,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:30:41,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:30:41,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:30:41,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:30:41,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:30:41,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:30:41,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:30:41,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:30:41,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:30:41,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:30:41,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:30:41,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:30:41,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:30:41,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:30:41,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:30:41,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:30:41,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:30:41,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:30:41,434 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 11:30:41,448 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:30:41,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:30:41,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:30:41,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:30:41,450 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:30:41,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:30:41,451 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:30:41,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:30:41,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:30:41,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:30:41,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:30:41,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:30:41,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:30:41,452 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:30:41,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:30:41,453 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:30:41,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:30:41,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:30:41,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:30:41,453 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:30:41,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:30:41,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:30:41,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:30:41,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:30:41,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:30:41,455 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:30:41,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:30:41,455 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:30:41,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:30:41,455 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:30:41,741 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:30:41,754 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:30:41,757 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:30:41,759 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:30:41,759 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:30:41,760 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i [2020-04-18 11:30:41,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7232403d4/7141f2099b284c609df57807d691fb43/FLAG13b2addfe [2020-04-18 11:30:42,327 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:30:42,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i [2020-04-18 11:30:42,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7232403d4/7141f2099b284c609df57807d691fb43/FLAG13b2addfe [2020-04-18 11:30:42,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7232403d4/7141f2099b284c609df57807d691fb43 [2020-04-18 11:30:42,669 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:30:42,691 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:30:42,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:30:42,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:30:42,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:30:42,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:30:42" (1/1) ... [2020-04-18 11:30:42,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b347a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:42, skipping insertion in model container [2020-04-18 11:30:42,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:30:42" (1/1) ... [2020-04-18 11:30:42,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:30:42,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:30:43,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:30:43,321 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:30:43,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:30:43,495 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:30:43,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:43 WrapperNode [2020-04-18 11:30:43,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:30:43,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:30:43,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:30:43,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:30:43,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:43" (1/1) ... [2020-04-18 11:30:43,532 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:43" (1/1) ... [2020-04-18 11:30:43,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:30:43,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:30:43,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:30:43,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:30:43,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:43" (1/1) ... [2020-04-18 11:30:43,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:43" (1/1) ... [2020-04-18 11:30:43,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:43" (1/1) ... [2020-04-18 11:30:43,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:43" (1/1) ... [2020-04-18 11:30:43,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:43" (1/1) ... [2020-04-18 11:30:43,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:43" (1/1) ... [2020-04-18 11:30:43,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:43" (1/1) ... [2020-04-18 11:30:43,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:30:43,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:30:43,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:30:43,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:30:43,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:43" (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 11:30:43,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:30:43,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:30:43,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:30:43,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:30:43,657 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:30:43,657 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:30:43,658 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:30:43,658 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:30:43,658 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:30:43,658 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:30:43,658 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 11:30:43,658 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 11:30:43,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:30:43,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:30:43,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:30:43,661 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 11:30:44,129 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:30:44,130 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:30:44,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:30:44 BoogieIcfgContainer [2020-04-18 11:30:44,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:30:44,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:30:44,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:30:44,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:30:44,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:30:42" (1/3) ... [2020-04-18 11:30:44,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4e9f3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:30:44, skipping insertion in model container [2020-04-18 11:30:44,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:43" (2/3) ... [2020-04-18 11:30:44,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4e9f3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:30:44, skipping insertion in model container [2020-04-18 11:30:44,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:30:44" (3/3) ... [2020-04-18 11:30:44,144 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_tso.opt.i [2020-04-18 11:30:44,156 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:30:44,156 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:30:44,164 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:30:44,165 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:30:44,196 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,197 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,197 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,198 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,198 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,198 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,199 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,199 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,199 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,200 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,200 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,200 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,201 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,201 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,201 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,202 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,202 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,202 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,203 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,203 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,203 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,204 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,204 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,207 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,213 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,213 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,214 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,214 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,224 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,224 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,224 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,225 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,227 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,228 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,228 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,228 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,232 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,232 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,233 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,233 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:44,251 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 11:30:44,274 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:30:44,274 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:30:44,274 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:30:44,274 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:30:44,275 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:30:44,275 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:30:44,275 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:30:44,275 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:30:44,291 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-04-18 11:30:44,293 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-04-18 11:30:44,344 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-04-18 11:30:44,345 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:30:44,350 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-04-18 11:30:44,354 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-04-18 11:30:44,382 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-04-18 11:30:44,382 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:30:44,383 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-04-18 11:30:44,387 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2016 [2020-04-18 11:30:44,388 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:30:46,416 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-04-18 11:30:46,502 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4485 [2020-04-18 11:30:46,502 INFO L214 etLargeBlockEncoding]: Total number of compositions: 67 [2020-04-18 11:30:46,507 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-04-18 11:30:46,642 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-04-18 11:30:46,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-04-18 11:30:46,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:30:46,667 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:30:46,668 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:30:46,669 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:30:46,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:46,675 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-04-18 11:30:46,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:30:46,683 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1236236085] [2020-04-18 11:30:46,700 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:46,713 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 11:30:46,715 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-04-18 11:30:46,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:30:46,717 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:30:46,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:46,719 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 2 times [2020-04-18 11:30:46,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:46,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804403381] [2020-04-18 11:30:46,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:46,932 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 11:30:46,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804403381] [2020-04-18 11:30:46,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:46,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:46,936 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:46,937 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:46,940 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 11:30:46,940 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:46,944 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:30:46,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:30:46,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:30:46,950 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-04-18 11:30:46,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:46,953 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-04-18 11:30:46,953 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-04-18 11:30:46,954 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:30:46,954 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1236236085] [2020-04-18 11:30:46,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:30:46,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:30:46,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1236236085] [2020-04-18 11:30:46,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 11:30:46,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:30:46,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:30:46,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:30:46,962 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-04-18 11:30:47,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:47,029 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-04-18 11:30:47,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 11:30:47,031 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-18 11:30:47,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:30:47,091 INFO L225 Difference]: With dead ends: 1450 [2020-04-18 11:30:47,092 INFO L226 Difference]: Without dead ends: 1194 [2020-04-18 11:30:47,093 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:30:47,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-04-18 11:30:47,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-04-18 11:30:47,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-04-18 11:30:47,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-04-18 11:30:47,246 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-04-18 11:30:47,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:30:47,247 INFO L479 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-04-18 11:30:47,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 11:30:47,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-04-18 11:30:47,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:30:47,250 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:30:47,250 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:30:47,251 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:30:47,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:47,251 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-04-18 11:30:47,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:30:47,252 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [206929033] [2020-04-18 11:30:47,252 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:47,253 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 11:30:47,253 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 11:30:47,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:30:47,254 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:30:47,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:47,254 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 2 times [2020-04-18 11:30:47,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:47,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176651318] [2020-04-18 11:30:47,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:47,458 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 11:30:47,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176651318] [2020-04-18 11:30:47,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:47,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:47,461 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:47,462 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:47,463 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 11:30:47,464 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:47,477 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:30:47,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:47,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:30:47,478 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-04-18 11:30:47,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:47,492 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-04-18 11:30:47,492 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-04-18 11:30:47,493 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:30:47,493 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [206929033] [2020-04-18 11:30:47,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:30:47,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:30:47,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [206929033] [2020-04-18 11:30:47,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:30:47,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:30:47,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:47,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:30:47,497 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-04-18 11:30:47,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:47,538 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-04-18 11:30:47,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 11:30:47,539 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 11:30:47,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:30:47,548 INFO L225 Difference]: With dead ends: 1322 [2020-04-18 11:30:47,548 INFO L226 Difference]: Without dead ends: 1066 [2020-04-18 11:30:47,550 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:30:47,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-04-18 11:30:47,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-04-18 11:30:47,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-04-18 11:30:47,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-04-18 11:30:47,591 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-04-18 11:30:47,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:30:47,592 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-04-18 11:30:47,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:30:47,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-04-18 11:30:47,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:30:47,594 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:30:47,595 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:30:47,595 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:30:47,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:47,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1585408540, now seen corresponding path program 1 times [2020-04-18 11:30:47,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:30:47,596 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [497350077] [2020-04-18 11:30:47,596 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:47,597 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 18 transitions. [2020-04-18 11:30:47,597 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 11:30:47,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:30:47,598 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:30:47,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:47,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1585433650, now seen corresponding path program 2 times [2020-04-18 11:30:47,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:47,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744662086] [2020-04-18 11:30:47,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:47,715 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 11:30:47,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744662086] [2020-04-18 11:30:47,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:47,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:47,716 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:47,718 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:47,719 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 14 transitions. [2020-04-18 11:30:47,719 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:47,733 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:30:47,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:47,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:30:47,734 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-04-18 11:30:47,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:47,752 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-04-18 11:30:47,752 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-04-18 11:30:47,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:30:47,753 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:30:47,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:47,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1585408540, now seen corresponding path program 3 times [2020-04-18 11:30:47,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:47,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528707010] [2020-04-18 11:30:47,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:47,816 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 11:30:47,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528707010] [2020-04-18 11:30:47,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:47,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:47,817 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:47,822 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:47,824 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 14 transitions. [2020-04-18 11:30:47,824 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:47,836 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:30:47,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:47,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:30:47,837 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2020-04-18 11:30:47,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:47,848 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-04-18 11:30:47,848 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-04-18 11:30:47,848 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:30:47,849 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [497350077] [2020-04-18 11:30:47,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:30:47,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:30:47,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [497350077] [2020-04-18 11:30:47,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:30:47,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:30:47,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:30:47,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:30:47,851 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 5 states. [2020-04-18 11:30:47,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:47,903 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-04-18 11:30:47,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 11:30:47,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-18 11:30:47,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:30:47,912 INFO L225 Difference]: With dead ends: 1162 [2020-04-18 11:30:47,912 INFO L226 Difference]: Without dead ends: 970 [2020-04-18 11:30:47,914 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:30:47,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-04-18 11:30:47,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-04-18 11:30:47,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-04-18 11:30:47,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-04-18 11:30:47,952 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-04-18 11:30:47,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:30:47,952 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-04-18 11:30:47,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:30:47,953 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-04-18 11:30:47,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:30:47,954 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:30:47,955 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:30:47,955 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:30:47,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:47,955 INFO L82 PathProgramCache]: Analyzing trace with hash -333651602, now seen corresponding path program 1 times [2020-04-18 11:30:47,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:30:47,956 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [498566162] [2020-04-18 11:30:47,956 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:47,957 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 48 transitions. [2020-04-18 11:30:47,957 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-04-18 11:30:47,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:30:47,958 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:30:47,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:47,958 INFO L82 PathProgramCache]: Analyzing trace with hash -333626492, now seen corresponding path program 2 times [2020-04-18 11:30:47,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:47,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339293800] [2020-04-18 11:30:47,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:48,070 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 11:30:48,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339293800] [2020-04-18 11:30:48,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:48,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:48,072 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:48,073 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:48,075 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-04-18 11:30:48,076 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:48,084 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:30:48,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:48,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:30:48,085 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2020-04-18 11:30:48,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:48,098 INFO L93 Difference]: Finished difference Result 34 states and 52 transitions. [2020-04-18 11:30:48,098 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2020-04-18 11:30:48,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:30:48,098 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:30:48,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:48,099 INFO L82 PathProgramCache]: Analyzing trace with hash -333651602, now seen corresponding path program 3 times [2020-04-18 11:30:48,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:48,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335344560] [2020-04-18 11:30:48,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:48,144 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 11:30:48,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335344560] [2020-04-18 11:30:48,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:48,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:48,145 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:48,147 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:48,149 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-04-18 11:30:48,149 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:48,156 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:30:48,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:48,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:30:48,156 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 4 states. [2020-04-18 11:30:48,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:48,165 INFO L93 Difference]: Finished difference Result 34 states and 52 transitions. [2020-04-18 11:30:48,166 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2020-04-18 11:30:48,166 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:30:48,166 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [498566162] [2020-04-18 11:30:48,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:30:48,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:30:48,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [498566162] [2020-04-18 11:30:48,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:30:48,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:30:48,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:30:48,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:30:48,168 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 5 states. [2020-04-18 11:30:48,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:48,204 INFO L93 Difference]: Finished difference Result 1042 states and 3558 transitions. [2020-04-18 11:30:48,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 11:30:48,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 11:30:48,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:30:48,212 INFO L225 Difference]: With dead ends: 1042 [2020-04-18 11:30:48,212 INFO L226 Difference]: Without dead ends: 898 [2020-04-18 11:30:48,213 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:30:48,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-04-18 11:30:48,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 898. [2020-04-18 11:30:48,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-04-18 11:30:48,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 3114 transitions. [2020-04-18 11:30:48,247 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 3114 transitions. Word has length 13 [2020-04-18 11:30:48,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:30:48,247 INFO L479 AbstractCegarLoop]: Abstraction has 898 states and 3114 transitions. [2020-04-18 11:30:48,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:30:48,247 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 3114 transitions. [2020-04-18 11:30:48,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:30:48,250 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:30:48,250 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:30:48,250 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:30:48,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:48,250 INFO L82 PathProgramCache]: Analyzing trace with hash 517017440, now seen corresponding path program 1 times [2020-04-18 11:30:48,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:30:48,251 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2088657103] [2020-04-18 11:30:48,252 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:48,254 INFO L259 McrAutomatonBuilder]: Finished intersection with 54 states and 112 transitions. [2020-04-18 11:30:48,254 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-04-18 11:30:48,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:30:48,255 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:30:48,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:48,255 INFO L82 PathProgramCache]: Analyzing trace with hash 517042550, now seen corresponding path program 2 times [2020-04-18 11:30:48,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:48,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063366173] [2020-04-18 11:30:48,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:48,304 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 11:30:48,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063366173] [2020-04-18 11:30:48,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:48,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:48,306 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:48,307 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:48,316 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 57 transitions. [2020-04-18 11:30:48,317 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:48,326 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:30:48,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:48,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:30:48,327 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2020-04-18 11:30:48,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:48,346 INFO L93 Difference]: Finished difference Result 62 states and 124 transitions. [2020-04-18 11:30:48,346 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 124 transitions. [2020-04-18 11:30:48,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:30:48,347 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:30:48,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:48,348 INFO L82 PathProgramCache]: Analyzing trace with hash 517017440, now seen corresponding path program 3 times [2020-04-18 11:30:48,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:48,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671848260] [2020-04-18 11:30:48,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:48,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:30:48,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671848260] [2020-04-18 11:30:48,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:48,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:48,446 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:48,448 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:48,456 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 74 transitions. [2020-04-18 11:30:48,457 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:48,465 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:30:48,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:48,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:30:48,466 INFO L87 Difference]: Start difference. First operand 62 states and 124 transitions. Second operand 4 states. [2020-04-18 11:30:48,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:48,475 INFO L93 Difference]: Finished difference Result 62 states and 124 transitions. [2020-04-18 11:30:48,476 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 124 transitions. [2020-04-18 11:30:48,476 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:30:48,476 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2088657103] [2020-04-18 11:30:48,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:30:48,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:30:48,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2088657103] [2020-04-18 11:30:48,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:30:48,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:30:48,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:30:48,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:30:48,478 INFO L87 Difference]: Start difference. First operand 898 states and 3114 transitions. Second operand 5 states. [2020-04-18 11:30:48,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:48,525 INFO L93 Difference]: Finished difference Result 952 states and 3222 transitions. [2020-04-18 11:30:48,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 11:30:48,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 11:30:48,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:30:48,532 INFO L225 Difference]: With dead ends: 952 [2020-04-18 11:30:48,533 INFO L226 Difference]: Without dead ends: 844 [2020-04-18 11:30:48,533 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:30:48,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-04-18 11:30:48,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 844. [2020-04-18 11:30:48,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2020-04-18 11:30:48,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2898 transitions. [2020-04-18 11:30:48,564 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2898 transitions. Word has length 14 [2020-04-18 11:30:48,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:30:48,565 INFO L479 AbstractCegarLoop]: Abstraction has 844 states and 2898 transitions. [2020-04-18 11:30:48,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:30:48,565 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2898 transitions. [2020-04-18 11:30:48,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:30:48,567 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:30:48,567 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:30:48,567 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:30:48,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:48,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1152352578, now seen corresponding path program 1 times [2020-04-18 11:30:48,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:30:48,569 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1208606290] [2020-04-18 11:30:48,569 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:48,572 INFO L259 McrAutomatonBuilder]: Finished intersection with 94 states and 240 transitions. [2020-04-18 11:30:48,576 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-04-18 11:30:48,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:30:48,577 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:30:48,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:48,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1151549988, now seen corresponding path program 2 times [2020-04-18 11:30:48,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:48,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583032271] [2020-04-18 11:30:48,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:48,662 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 11:30:48,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583032271] [2020-04-18 11:30:48,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:48,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:48,663 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:48,664 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:48,669 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 65 transitions. [2020-04-18 11:30:48,669 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:48,678 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:30:48,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:48,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:30:48,679 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 4 states. [2020-04-18 11:30:48,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:48,696 INFO L93 Difference]: Finished difference Result 110 states and 272 transitions. [2020-04-18 11:30:48,696 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 272 transitions. [2020-04-18 11:30:48,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:30:48,697 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:30:48,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:48,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1152328398, now seen corresponding path program 3 times [2020-04-18 11:30:48,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:48,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329767709] [2020-04-18 11:30:48,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:48,757 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 11:30:48,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329767709] [2020-04-18 11:30:48,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:48,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:48,758 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:48,760 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:48,768 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 77 transitions. [2020-04-18 11:30:48,768 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:48,776 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:30:48,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:48,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:30:48,777 INFO L87 Difference]: Start difference. First operand 110 states and 272 transitions. Second operand 4 states. [2020-04-18 11:30:48,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:48,799 INFO L93 Difference]: Finished difference Result 134 states and 316 transitions. [2020-04-18 11:30:48,799 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 316 transitions. [2020-04-18 11:30:48,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:30:48,800 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:30:48,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:48,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1152352578, now seen corresponding path program 4 times [2020-04-18 11:30:48,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:48,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944871044] [2020-04-18 11:30:48,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:48,898 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 11:30:48,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944871044] [2020-04-18 11:30:48,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:48,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:30:48,899 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:48,901 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:48,913 INFO L259 McrAutomatonBuilder]: Finished intersection with 64 states and 146 transitions. [2020-04-18 11:30:48,913 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:49,035 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:30:49,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:30:49,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:30:49,036 INFO L87 Difference]: Start difference. First operand 134 states and 316 transitions. Second operand 6 states. [2020-04-18 11:30:49,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:49,070 INFO L93 Difference]: Finished difference Result 134 states and 316 transitions. [2020-04-18 11:30:49,071 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 316 transitions. [2020-04-18 11:30:49,071 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:30:49,072 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1208606290] [2020-04-18 11:30:49,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:30:49,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:30:49,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1208606290] [2020-04-18 11:30:49,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 11:30:49,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:30:49,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:30:49,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:30:49,074 INFO L87 Difference]: Start difference. First operand 844 states and 2898 transitions. Second operand 8 states. [2020-04-18 11:30:49,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:49,210 INFO L93 Difference]: Finished difference Result 1063 states and 3587 transitions. [2020-04-18 11:30:49,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 11:30:49,211 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-04-18 11:30:49,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:30:49,215 INFO L225 Difference]: With dead ends: 1063 [2020-04-18 11:30:49,215 INFO L226 Difference]: Without dead ends: 472 [2020-04-18 11:30:49,216 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:30:49,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-04-18 11:30:49,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2020-04-18 11:30:49,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-04-18 11:30:49,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1500 transitions. [2020-04-18 11:30:49,231 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1500 transitions. Word has length 15 [2020-04-18 11:30:49,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:30:49,231 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 1500 transitions. [2020-04-18 11:30:49,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 11:30:49,232 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1500 transitions. [2020-04-18 11:30:49,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:30:49,233 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:30:49,233 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:30:49,233 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:30:49,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:49,234 INFO L82 PathProgramCache]: Analyzing trace with hash 508938520, now seen corresponding path program 1 times [2020-04-18 11:30:49,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:30:49,234 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [716540214] [2020-04-18 11:30:49,235 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:49,237 INFO L259 McrAutomatonBuilder]: Finished intersection with 126 states and 344 transitions. [2020-04-18 11:30:49,238 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states. [2020-04-18 11:30:49,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:30:49,239 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:30:49,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:49,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1338349554, now seen corresponding path program 2 times [2020-04-18 11:30:49,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:49,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645658686] [2020-04-18 11:30:49,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:49,281 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 11:30:49,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645658686] [2020-04-18 11:30:49,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:49,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:49,282 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:49,283 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:49,288 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 73 transitions. [2020-04-18 11:30:49,288 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:49,297 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:30:49,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:49,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:30:49,298 INFO L87 Difference]: Start difference. First operand 126 states. Second operand 4 states. [2020-04-18 11:30:49,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:49,311 INFO L93 Difference]: Finished difference Result 158 states and 424 transitions. [2020-04-18 11:30:49,311 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 424 transitions. [2020-04-18 11:30:49,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:30:49,312 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:30:49,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:49,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1364383044, now seen corresponding path program 3 times [2020-04-18 11:30:49,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:49,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249785805] [2020-04-18 11:30:49,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:49,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:30:49,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249785805] [2020-04-18 11:30:49,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:49,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:49,370 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:49,372 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:49,378 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 94 transitions. [2020-04-18 11:30:49,378 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:49,388 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:30:49,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:49,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:30:49,389 INFO L87 Difference]: Start difference. First operand 158 states and 424 transitions. Second operand 4 states. [2020-04-18 11:30:49,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:49,407 INFO L93 Difference]: Finished difference Result 198 states and 508 transitions. [2020-04-18 11:30:49,407 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 508 transitions. [2020-04-18 11:30:49,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:30:49,408 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:30:49,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:49,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1364407224, now seen corresponding path program 4 times [2020-04-18 11:30:49,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:49,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532816840] [2020-04-18 11:30:49,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:49,472 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 11:30:49,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532816840] [2020-04-18 11:30:49,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:49,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:30:49,473 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:49,475 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:49,483 INFO L259 McrAutomatonBuilder]: Finished intersection with 74 states and 170 transitions. [2020-04-18 11:30:49,483 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:49,525 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:30:49,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:30:49,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:30:49,526 INFO L87 Difference]: Start difference. First operand 198 states and 508 transitions. Second operand 6 states. [2020-04-18 11:30:49,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:49,570 INFO L93 Difference]: Finished difference Result 230 states and 562 transitions. [2020-04-18 11:30:49,570 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 562 transitions. [2020-04-18 11:30:49,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:30:49,571 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:30:49,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:49,571 INFO L82 PathProgramCache]: Analyzing trace with hash 508938520, now seen corresponding path program 5 times [2020-04-18 11:30:49,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:49,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265952601] [2020-04-18 11:30:49,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:49,638 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 11:30:49,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265952601] [2020-04-18 11:30:49,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:49,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:30:49,639 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:49,640 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:49,648 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 100 transitions. [2020-04-18 11:30:49,648 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:49,719 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 11:30:49,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:30:49,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-04-18 11:30:49,723 INFO L87 Difference]: Start difference. First operand 230 states and 562 transitions. Second operand 6 states. [2020-04-18 11:30:49,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:49,760 INFO L93 Difference]: Finished difference Result 230 states and 562 transitions. [2020-04-18 11:30:49,760 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 562 transitions. [2020-04-18 11:30:49,761 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:30:49,762 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [716540214] [2020-04-18 11:30:49,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:30:49,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:30:49,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [716540214] [2020-04-18 11:30:49,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:30:49,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:30:49,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:30:49,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:30:49,764 INFO L87 Difference]: Start difference. First operand 472 states and 1500 transitions. Second operand 11 states. [2020-04-18 11:30:49,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:49,956 INFO L93 Difference]: Finished difference Result 622 states and 1921 transitions. [2020-04-18 11:30:49,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 11:30:49,957 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2020-04-18 11:30:49,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:30:49,960 INFO L225 Difference]: With dead ends: 622 [2020-04-18 11:30:49,960 INFO L226 Difference]: Without dead ends: 304 [2020-04-18 11:30:49,961 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2020-04-18 11:30:49,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-04-18 11:30:49,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2020-04-18 11:30:49,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-04-18 11:30:49,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 882 transitions. [2020-04-18 11:30:49,972 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 882 transitions. Word has length 16 [2020-04-18 11:30:49,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:30:49,972 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 882 transitions. [2020-04-18 11:30:49,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:30:49,972 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 882 transitions. [2020-04-18 11:30:49,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:30:49,973 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:30:49,973 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:30:49,974 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:30:49,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:49,975 INFO L82 PathProgramCache]: Analyzing trace with hash -583625760, now seen corresponding path program 1 times [2020-04-18 11:30:49,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:30:49,975 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [489277221] [2020-04-18 11:30:49,976 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:49,978 INFO L259 McrAutomatonBuilder]: Finished intersection with 186 states and 542 transitions. [2020-04-18 11:30:49,980 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-04-18 11:30:49,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:30:49,981 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:30:49,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:49,982 INFO L82 PathProgramCache]: Analyzing trace with hash 289289002, now seen corresponding path program 2 times [2020-04-18 11:30:49,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:49,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936661175] [2020-04-18 11:30:49,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:50,048 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 11:30:50,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936661175] [2020-04-18 11:30:50,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:50,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:50,050 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:50,051 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:50,062 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 115 transitions. [2020-04-18 11:30:50,062 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:50,073 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:30:50,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:50,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:30:50,074 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 4 states. [2020-04-18 11:30:50,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:50,090 INFO L93 Difference]: Finished difference Result 234 states and 670 transitions. [2020-04-18 11:30:50,090 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 670 transitions. [2020-04-18 11:30:50,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:30:50,091 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:30:50,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:50,092 INFO L82 PathProgramCache]: Analyzing trace with hash 263255512, now seen corresponding path program 3 times [2020-04-18 11:30:50,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:50,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68840693] [2020-04-18 11:30:50,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:50,180 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 11:30:50,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68840693] [2020-04-18 11:30:50,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:50,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:50,181 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:50,182 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:50,192 INFO L259 McrAutomatonBuilder]: Finished intersection with 72 states and 149 transitions. [2020-04-18 11:30:50,192 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:50,202 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:30:50,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:50,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:30:50,203 INFO L87 Difference]: Start difference. First operand 234 states and 670 transitions. Second operand 4 states. [2020-04-18 11:30:50,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:50,219 INFO L93 Difference]: Finished difference Result 294 states and 806 transitions. [2020-04-18 11:30:50,219 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 806 transitions. [2020-04-18 11:30:50,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:30:50,220 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:30:50,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:50,221 INFO L82 PathProgramCache]: Analyzing trace with hash 263231332, now seen corresponding path program 4 times [2020-04-18 11:30:50,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:50,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213364932] [2020-04-18 11:30:50,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:50,285 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 11:30:50,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213364932] [2020-04-18 11:30:50,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:50,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:30:50,287 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:50,288 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:50,298 INFO L259 McrAutomatonBuilder]: Finished intersection with 78 states and 166 transitions. [2020-04-18 11:30:50,298 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:50,341 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:30:50,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:30:50,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:30:50,341 INFO L87 Difference]: Start difference. First operand 294 states and 806 transitions. Second operand 6 states. [2020-04-18 11:30:50,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:50,384 INFO L93 Difference]: Finished difference Result 342 states and 895 transitions. [2020-04-18 11:30:50,384 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 895 transitions. [2020-04-18 11:30:50,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:30:50,386 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:30:50,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:50,386 INFO L82 PathProgramCache]: Analyzing trace with hash -583625760, now seen corresponding path program 5 times [2020-04-18 11:30:50,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:50,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729585865] [2020-04-18 11:30:50,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:50,433 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 11:30:50,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729585865] [2020-04-18 11:30:50,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:50,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:30:50,435 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:50,436 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:50,442 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 94 transitions. [2020-04-18 11:30:50,443 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:50,481 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:30:50,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:30:50,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-04-18 11:30:50,481 INFO L87 Difference]: Start difference. First operand 342 states and 895 transitions. Second operand 5 states. [2020-04-18 11:30:50,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:50,509 INFO L93 Difference]: Finished difference Result 342 states and 895 transitions. [2020-04-18 11:30:50,510 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 895 transitions. [2020-04-18 11:30:50,511 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:30:50,511 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [489277221] [2020-04-18 11:30:50,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:30:50,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:30:50,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [489277221] [2020-04-18 11:30:50,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 11:30:50,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:30:50,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 11:30:50,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:30:50,513 INFO L87 Difference]: Start difference. First operand 304 states and 882 transitions. Second operand 10 states. [2020-04-18 11:30:50,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:50,656 INFO L93 Difference]: Finished difference Result 388 states and 1110 transitions. [2020-04-18 11:30:50,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 11:30:50,656 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-04-18 11:30:50,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:30:50,658 INFO L225 Difference]: With dead ends: 388 [2020-04-18 11:30:50,658 INFO L226 Difference]: Without dead ends: 172 [2020-04-18 11:30:50,659 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:30:50,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-04-18 11:30:50,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-04-18 11:30:50,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-04-18 11:30:50,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 452 transitions. [2020-04-18 11:30:50,665 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 452 transitions. Word has length 17 [2020-04-18 11:30:50,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:30:50,666 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 452 transitions. [2020-04-18 11:30:50,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 11:30:50,666 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 452 transitions. [2020-04-18 11:30:50,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:30:50,668 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:30:50,668 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 11:30:50,668 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:30:50,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:50,669 INFO L82 PathProgramCache]: Analyzing trace with hash -180488596, now seen corresponding path program 1 times [2020-04-18 11:30:50,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:30:50,674 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1053220399] [2020-04-18 11:30:50,675 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:50,680 INFO L259 McrAutomatonBuilder]: Finished intersection with 270 states and 838 transitions. [2020-04-18 11:30:50,682 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states. [2020-04-18 11:30:50,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:30:50,683 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:30:50,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:50,684 INFO L82 PathProgramCache]: Analyzing trace with hash 378023190, now seen corresponding path program 2 times [2020-04-18 11:30:50,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:50,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405106959] [2020-04-18 11:30:50,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:50,727 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 11:30:50,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405106959] [2020-04-18 11:30:50,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:50,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:50,728 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:50,731 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:50,740 INFO L259 McrAutomatonBuilder]: Finished intersection with 64 states and 123 transitions. [2020-04-18 11:30:50,740 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:50,749 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:30:50,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:50,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:30:50,750 INFO L87 Difference]: Start difference. First operand 270 states. Second operand 4 states. [2020-04-18 11:30:50,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:50,765 INFO L93 Difference]: Finished difference Result 342 states and 1042 transitions. [2020-04-18 11:30:50,765 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 1042 transitions. [2020-04-18 11:30:50,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:30:50,766 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:30:50,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:50,767 INFO L82 PathProgramCache]: Analyzing trace with hash -429015000, now seen corresponding path program 3 times [2020-04-18 11:30:50,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:50,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648525155] [2020-04-18 11:30:50,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:50,808 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 11:30:50,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648525155] [2020-04-18 11:30:50,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:50,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:50,809 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:50,811 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:50,822 INFO L259 McrAutomatonBuilder]: Finished intersection with 76 states and 157 transitions. [2020-04-18 11:30:50,822 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:50,830 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:30:50,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:50,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:30:50,831 INFO L87 Difference]: Start difference. First operand 342 states and 1042 transitions. Second operand 4 states. [2020-04-18 11:30:50,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:50,847 INFO L93 Difference]: Finished difference Result 462 states and 1374 transitions. [2020-04-18 11:30:50,847 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 1374 transitions. [2020-04-18 11:30:50,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:30:50,849 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:30:50,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:50,849 INFO L82 PathProgramCache]: Analyzing trace with hash -429764580, now seen corresponding path program 4 times [2020-04-18 11:30:50,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:50,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552570798] [2020-04-18 11:30:50,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:50,904 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 11:30:50,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552570798] [2020-04-18 11:30:50,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:50,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:30:50,905 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:50,907 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:50,917 INFO L259 McrAutomatonBuilder]: Finished intersection with 88 states and 189 transitions. [2020-04-18 11:30:50,918 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:50,955 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:30:50,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:30:50,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:30:50,956 INFO L87 Difference]: Start difference. First operand 462 states and 1374 transitions. Second operand 6 states. [2020-04-18 11:30:51,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:51,007 INFO L93 Difference]: Finished difference Result 540 states and 1537 transitions. [2020-04-18 11:30:51,008 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 1537 transitions. [2020-04-18 11:30:51,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:30:51,009 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:30:51,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:51,010 INFO L82 PathProgramCache]: Analyzing trace with hash -912530656, now seen corresponding path program 5 times [2020-04-18 11:30:51,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:51,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385825205] [2020-04-18 11:30:51,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:51,066 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 11:30:51,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385825205] [2020-04-18 11:30:51,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:51,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:30:51,067 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:51,069 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:51,104 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 111 transitions. [2020-04-18 11:30:51,104 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:51,145 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:30:51,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:30:51,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-04-18 11:30:51,146 INFO L87 Difference]: Start difference. First operand 540 states and 1537 transitions. Second operand 5 states. [2020-04-18 11:30:51,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:51,192 INFO L93 Difference]: Finished difference Result 633 states and 1749 transitions. [2020-04-18 11:30:51,193 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1749 transitions. [2020-04-18 11:30:51,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:30:51,195 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:30:51,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:51,195 INFO L82 PathProgramCache]: Analyzing trace with hash -180488596, now seen corresponding path program 6 times [2020-04-18 11:30:51,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:51,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673338995] [2020-04-18 11:30:51,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:51,235 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 11:30:51,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673338995] [2020-04-18 11:30:51,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:51,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:30:51,236 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:51,237 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:51,242 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 56 transitions. [2020-04-18 11:30:51,242 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:51,272 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:30:51,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:30:51,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2020-04-18 11:30:51,272 INFO L87 Difference]: Start difference. First operand 633 states and 1749 transitions. Second operand 5 states. [2020-04-18 11:30:51,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:51,301 INFO L93 Difference]: Finished difference Result 633 states and 1749 transitions. [2020-04-18 11:30:51,302 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1749 transitions. [2020-04-18 11:30:51,303 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:30:51,304 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1053220399] [2020-04-18 11:30:51,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:30:51,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:30:51,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1053220399] [2020-04-18 11:30:51,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 11:30:51,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:30:51,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 11:30:51,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2020-04-18 11:30:51,305 INFO L87 Difference]: Start difference. First operand 172 states and 452 transitions. Second operand 12 states. [2020-04-18 11:30:51,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:51,408 INFO L93 Difference]: Finished difference Result 148 states and 376 transitions. [2020-04-18 11:30:51,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 11:30:51,409 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-04-18 11:30:51,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:30:51,409 INFO L225 Difference]: With dead ends: 148 [2020-04-18 11:30:51,409 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:30:51,410 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2020-04-18 11:30:51,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:30:51,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:30:51,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:30:51,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:30:51,410 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-18 11:30:51,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:30:51,411 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:30:51,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 11:30:51,411 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:30:51,411 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:30:51,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:30:51 BasicIcfg [2020-04-18 11:30:51,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:30:51,417 INFO L168 Benchmark]: Toolchain (without parser) took 8746.70 ms. Allocated memory was 146.8 MB in the beginning and 316.1 MB in the end (delta: 169.3 MB). Free memory was 102.8 MB in the beginning and 210.2 MB in the end (delta: -107.4 MB). Peak memory consumption was 61.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:30:51,417 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 11:30:51,418 INFO L168 Benchmark]: CACSL2BoogieTranslator took 804.33 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 100.9 MB in the beginning and 158.5 MB in the end (delta: -57.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-04-18 11:30:51,418 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.30 ms. Allocated memory is still 202.4 MB. Free memory was 158.5 MB in the beginning and 156.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:30:51,418 INFO L168 Benchmark]: Boogie Preprocessor took 26.52 ms. Allocated memory is still 202.4 MB. Free memory was 156.5 MB in the beginning and 154.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:30:51,419 INFO L168 Benchmark]: RCFGBuilder took 551.33 ms. Allocated memory is still 202.4 MB. Free memory was 154.6 MB in the beginning and 130.4 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-04-18 11:30:51,419 INFO L168 Benchmark]: TraceAbstraction took 7278.63 ms. Allocated memory was 202.4 MB in the beginning and 316.1 MB in the end (delta: 113.8 MB). Free memory was 129.7 MB in the beginning and 210.2 MB in the end (delta: -80.5 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:30:51,422 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 804.33 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 100.9 MB in the beginning and 158.5 MB in the end (delta: -57.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.30 ms. Allocated memory is still 202.4 MB. Free memory was 158.5 MB in the beginning and 156.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.52 ms. Allocated memory is still 202.4 MB. Free memory was 156.5 MB in the beginning and 154.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 551.33 ms. Allocated memory is still 202.4 MB. Free memory was 154.6 MB in the beginning and 130.4 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7278.63 ms. Allocated memory was 202.4 MB in the beginning and 316.1 MB in the end (delta: 113.8 MB). Free memory was 129.7 MB in the beginning and 210.2 MB in the end (delta: -80.5 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.2s, 97 ProgramPointsBefore, 41 ProgramPointsAfterwards, 86 TransitionsBefore, 29 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 1045 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 47 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 4485 CheckedPairsTotal, 67 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, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 263 SDtfs, 737 SDslu, 728 SDs, 0 SdLazy, 119 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 480 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred 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: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...