/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_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:30:16,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:30:16,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:30:16,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:30:16,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:30:16,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:30:16,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:30:16,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:30:16,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:30:16,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:30:16,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:30:16,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:30:16,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:30:16,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:30:16,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:30:16,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:30:16,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:30:16,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:30:16,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:30:16,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:30:16,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:30:16,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:30:16,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:30:16,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:30:16,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:30:16,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:30:16,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:30:16,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:30:16,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:30:16,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:30:16,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:30:16,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:30:16,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:30:16,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:30:16,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:30:16,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:30:16,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:30:16,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:30:16,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:30:16,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:30:16,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:30:16,458 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 11:30:16,497 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:30:16,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:30:16,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:30:16,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:30:16,499 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:30:16,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:30:16,499 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:30:16,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:30:16,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:30:16,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:30:16,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:30:16,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:30:16,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:30:16,505 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:30:16,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:30:16,505 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:30:16,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:30:16,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:30:16,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:30:16,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:30:16,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:30:16,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:30:16,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:30:16,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:30:16,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:30:16,507 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:30:16,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:30:16,507 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:30:16,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:30:16,508 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:30:16,773 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:30:16,792 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:30:16,795 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:30:16,797 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:30:16,797 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:30:16,798 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i [2020-04-18 11:30:16,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4550bb457/68e14339d7534258af61ea6d856ccba3/FLAG012e65a7b [2020-04-18 11:30:17,430 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:30:17,432 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i [2020-04-18 11:30:17,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4550bb457/68e14339d7534258af61ea6d856ccba3/FLAG012e65a7b [2020-04-18 11:30:17,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4550bb457/68e14339d7534258af61ea6d856ccba3 [2020-04-18 11:30:17,778 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:30:17,795 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:30:17,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:30:17,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:30:17,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:30:17,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:30:17" (1/1) ... [2020-04-18 11:30:17,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fd6520b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:17, skipping insertion in model container [2020-04-18 11:30:17,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:30:17" (1/1) ... [2020-04-18 11:30:17,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:30:17,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:30:18,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:30:18,375 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:30:18,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:30:18,511 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:30:18,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:18 WrapperNode [2020-04-18 11:30:18,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:30:18,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:30:18,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:30:18,513 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:30:18,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:18" (1/1) ... [2020-04-18 11:30:18,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:18" (1/1) ... [2020-04-18 11:30:18,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:30:18,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:30:18,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:30:18,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:30:18,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:18" (1/1) ... [2020-04-18 11:30:18,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:18" (1/1) ... [2020-04-18 11:30:18,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:18" (1/1) ... [2020-04-18 11:30:18,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:18" (1/1) ... [2020-04-18 11:30:18,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:18" (1/1) ... [2020-04-18 11:30:18,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:18" (1/1) ... [2020-04-18 11:30:18,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:18" (1/1) ... [2020-04-18 11:30:18,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:30:18,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:30:18,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:30:18,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:30:18,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:18" (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 11:30:18,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:30:18,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:30:18,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:30:18,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:30:18,648 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:30:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:30:18,648 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:30:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:30:18,648 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:30:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:30:18,649 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 11:30:18,649 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 11:30:18,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:30:18,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:30:18,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:30:18,651 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 11:30:19,092 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:30:19,093 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:30:19,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:30:19 BoogieIcfgContainer [2020-04-18 11:30:19,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:30:19,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:30:19,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:30:19,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:30:19,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:30:17" (1/3) ... [2020-04-18 11:30:19,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33cb733a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:30:19, skipping insertion in model container [2020-04-18 11:30:19,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:18" (2/3) ... [2020-04-18 11:30:19,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33cb733a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:30:19, skipping insertion in model container [2020-04-18 11:30:19,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:30:19" (3/3) ... [2020-04-18 11:30:19,114 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_pso.opt.i [2020-04-18 11:30:19,124 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:30:19,125 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:30:19,135 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:30:19,136 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:30:19,168 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,169 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,169 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,169 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,170 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,170 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,171 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,171 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,171 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,172 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,172 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,172 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,173 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,173 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,173 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,173 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,174 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,174 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,174 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,175 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,175 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,175 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,175 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,176 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,181 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,181 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,182 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,182 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,188 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,188 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,188 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,189 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,191 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,191 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,191 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,191 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,196 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,196 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,196 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,197 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:19,212 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 11:30:19,229 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:30:19,230 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:30:19,230 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:30:19,230 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:30:19,230 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:30:19,230 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:30:19,230 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:30:19,231 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:30:19,246 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-04-18 11:30:19,248 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-04-18 11:30:19,299 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-04-18 11:30:19,299 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:30:19,307 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 11:30:19,311 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-04-18 11:30:19,352 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-04-18 11:30:19,352 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:30:19,353 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 11:30:19,356 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2016 [2020-04-18 11:30:19,357 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:30:21,362 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-04-18 11:30:21,444 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4485 [2020-04-18 11:30:21,444 INFO L214 etLargeBlockEncoding]: Total number of compositions: 67 [2020-04-18 11:30:21,449 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-04-18 11:30:21,609 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-04-18 11:30:21,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-04-18 11:30:21,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:30:21,626 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:30:21,627 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:30:21,627 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:30:21,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:21,634 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-04-18 11:30:21,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:30:21,642 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1316850261] [2020-04-18 11:30:21,660 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:21,696 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 11:30:21,700 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-04-18 11:30:21,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:30:21,701 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:30:21,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:21,702 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 2 times [2020-04-18 11:30:21,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:21,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444093490] [2020-04-18 11:30:21,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:21,942 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 11:30:21,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444093490] [2020-04-18 11:30:21,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:21,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:21,946 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:21,947 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:21,950 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 11:30:21,950 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:21,954 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:30:21,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:30:21,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:30:21,960 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-04-18 11:30:21,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:21,965 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-04-18 11:30:21,965 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-04-18 11:30:21,965 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:30:21,966 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1316850261] [2020-04-18 11:30:21,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:30:21,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:30:21,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1316850261] [2020-04-18 11:30:21,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 11:30:21,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:30:21,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:30:21,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:30:21,974 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-04-18 11:30:22,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:22,028 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-04-18 11:30:22,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 11:30:22,029 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-18 11:30:22,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:30:22,089 INFO L225 Difference]: With dead ends: 1450 [2020-04-18 11:30:22,090 INFO L226 Difference]: Without dead ends: 1194 [2020-04-18 11:30:22,094 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 11:30:22,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-04-18 11:30:22,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-04-18 11:30:22,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-04-18 11:30:22,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-04-18 11:30:22,302 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-04-18 11:30:22,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:30:22,304 INFO L479 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-04-18 11:30:22,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 11:30:22,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-04-18 11:30:22,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:30:22,313 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:30:22,313 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:30:22,314 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:30:22,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:22,314 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-04-18 11:30:22,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:30:22,315 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1118347238] [2020-04-18 11:30:22,316 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:22,317 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 11:30:22,318 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 11:30:22,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:30:22,319 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:30:22,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:22,320 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 2 times [2020-04-18 11:30:22,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:22,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737903882] [2020-04-18 11:30:22,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:22,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:30:22,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737903882] [2020-04-18 11:30:22,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:22,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:22,545 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:22,547 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:22,549 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 11:30:22,549 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:22,563 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:30:22,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:22,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:30:22,564 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-04-18 11:30:22,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:22,577 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-04-18 11:30:22,577 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-04-18 11:30:22,577 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:30:22,578 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1118347238] [2020-04-18 11:30:22,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:30:22,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:30:22,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1118347238] [2020-04-18 11:30:22,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:30:22,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:30:22,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:22,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:30:22,580 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-04-18 11:30:22,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:22,616 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-04-18 11:30:22,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 11:30:22,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 11:30:22,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:30:22,627 INFO L225 Difference]: With dead ends: 1322 [2020-04-18 11:30:22,627 INFO L226 Difference]: Without dead ends: 1066 [2020-04-18 11:30:22,629 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 11:30:22,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-04-18 11:30:22,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-04-18 11:30:22,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-04-18 11:30:22,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-04-18 11:30:22,678 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-04-18 11:30:22,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:30:22,678 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-04-18 11:30:22,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:30:22,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-04-18 11:30:22,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:30:22,680 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:30:22,680 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:30:22,680 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:30:22,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:22,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1585408540, now seen corresponding path program 1 times [2020-04-18 11:30:22,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:30:22,682 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1765208860] [2020-04-18 11:30:22,682 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:22,683 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 18 transitions. [2020-04-18 11:30:22,683 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 11:30:22,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:30:22,684 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:30:22,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:22,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1585433650, now seen corresponding path program 2 times [2020-04-18 11:30:22,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:22,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447683383] [2020-04-18 11:30:22,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:22,758 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 11:30:22,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447683383] [2020-04-18 11:30:22,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:22,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:22,761 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:22,763 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:22,765 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 14 transitions. [2020-04-18 11:30:22,766 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:22,783 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:30:22,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:22,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:30:22,784 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-04-18 11:30:22,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:22,800 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-04-18 11:30:22,800 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-04-18 11:30:22,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:30:22,801 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:30:22,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:22,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1585408540, now seen corresponding path program 3 times [2020-04-18 11:30:22,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:22,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456030049] [2020-04-18 11:30:22,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:22,901 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 11:30:22,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456030049] [2020-04-18 11:30:22,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:22,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:22,902 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:22,908 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:22,911 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 14 transitions. [2020-04-18 11:30:22,911 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:22,922 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:30:22,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:22,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:30:22,924 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2020-04-18 11:30:22,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:22,937 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-04-18 11:30:22,937 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-04-18 11:30:22,937 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:30:22,938 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1765208860] [2020-04-18 11:30:22,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:30:22,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:30:22,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1765208860] [2020-04-18 11:30:22,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:30:22,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:30:22,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:30:22,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:30:22,939 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 5 states. [2020-04-18 11:30:22,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:22,996 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-04-18 11:30:22,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 11:30:22,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-18 11:30:22,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:30:23,006 INFO L225 Difference]: With dead ends: 1162 [2020-04-18 11:30:23,007 INFO L226 Difference]: Without dead ends: 970 [2020-04-18 11:30:23,008 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 11:30:23,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-04-18 11:30:23,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-04-18 11:30:23,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-04-18 11:30:23,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-04-18 11:30:23,095 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-04-18 11:30:23,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:30:23,095 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-04-18 11:30:23,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:30:23,095 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-04-18 11:30:23,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:30:23,097 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:30:23,097 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:30:23,097 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:30:23,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:23,098 INFO L82 PathProgramCache]: Analyzing trace with hash -333651602, now seen corresponding path program 1 times [2020-04-18 11:30:23,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:30:23,098 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1985581898] [2020-04-18 11:30:23,099 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:23,099 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 48 transitions. [2020-04-18 11:30:23,100 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-04-18 11:30:23,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:30:23,101 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:30:23,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:23,101 INFO L82 PathProgramCache]: Analyzing trace with hash -333626492, now seen corresponding path program 2 times [2020-04-18 11:30:23,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:23,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746933415] [2020-04-18 11:30:23,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:23,174 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 11:30:23,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746933415] [2020-04-18 11:30:23,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:23,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:23,175 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:23,177 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:23,180 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-04-18 11:30:23,180 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:23,189 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:30:23,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:23,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:30:23,190 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2020-04-18 11:30:23,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:23,206 INFO L93 Difference]: Finished difference Result 34 states and 52 transitions. [2020-04-18 11:30:23,206 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2020-04-18 11:30:23,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:30:23,207 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:30:23,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:23,208 INFO L82 PathProgramCache]: Analyzing trace with hash -333651602, now seen corresponding path program 3 times [2020-04-18 11:30:23,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:23,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076585478] [2020-04-18 11:30:23,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:23,259 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 11:30:23,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076585478] [2020-04-18 11:30:23,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:23,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:23,260 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:23,261 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:23,264 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-04-18 11:30:23,264 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:23,271 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:30:23,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:23,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:30:23,272 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 4 states. [2020-04-18 11:30:23,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:23,281 INFO L93 Difference]: Finished difference Result 34 states and 52 transitions. [2020-04-18 11:30:23,281 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2020-04-18 11:30:23,282 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:30:23,282 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1985581898] [2020-04-18 11:30:23,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:30:23,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:30:23,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1985581898] [2020-04-18 11:30:23,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:30:23,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:30:23,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:30:23,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:30:23,284 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 5 states. [2020-04-18 11:30:23,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:23,316 INFO L93 Difference]: Finished difference Result 1042 states and 3558 transitions. [2020-04-18 11:30:23,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 11:30:23,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 11:30:23,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:30:23,324 INFO L225 Difference]: With dead ends: 1042 [2020-04-18 11:30:23,324 INFO L226 Difference]: Without dead ends: 898 [2020-04-18 11:30:23,325 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 11:30:23,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-04-18 11:30:23,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 898. [2020-04-18 11:30:23,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-04-18 11:30:23,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 3114 transitions. [2020-04-18 11:30:23,360 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 3114 transitions. Word has length 13 [2020-04-18 11:30:23,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:30:23,361 INFO L479 AbstractCegarLoop]: Abstraction has 898 states and 3114 transitions. [2020-04-18 11:30:23,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:30:23,361 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 3114 transitions. [2020-04-18 11:30:23,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:30:23,363 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:30:23,363 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:30:23,363 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:30:23,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:23,368 INFO L82 PathProgramCache]: Analyzing trace with hash 517017440, now seen corresponding path program 1 times [2020-04-18 11:30:23,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:30:23,368 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1893880944] [2020-04-18 11:30:23,369 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:23,370 INFO L259 McrAutomatonBuilder]: Finished intersection with 54 states and 112 transitions. [2020-04-18 11:30:23,371 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-04-18 11:30:23,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:30:23,371 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:30:23,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:23,374 INFO L82 PathProgramCache]: Analyzing trace with hash 517042550, now seen corresponding path program 2 times [2020-04-18 11:30:23,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:23,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871340067] [2020-04-18 11:30:23,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:23,443 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 11:30:23,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871340067] [2020-04-18 11:30:23,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:23,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:23,444 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:23,446 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:23,452 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 57 transitions. [2020-04-18 11:30:23,452 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:23,463 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:30:23,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:23,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:30:23,464 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2020-04-18 11:30:23,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:23,484 INFO L93 Difference]: Finished difference Result 62 states and 124 transitions. [2020-04-18 11:30:23,484 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 124 transitions. [2020-04-18 11:30:23,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:30:23,485 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:30:23,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:23,485 INFO L82 PathProgramCache]: Analyzing trace with hash 517017440, now seen corresponding path program 3 times [2020-04-18 11:30:23,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:23,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829844754] [2020-04-18 11:30:23,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:23,563 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 11:30:23,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829844754] [2020-04-18 11:30:23,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:23,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:23,564 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:23,566 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:23,572 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 74 transitions. [2020-04-18 11:30:23,573 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:23,580 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:30:23,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:23,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:30:23,581 INFO L87 Difference]: Start difference. First operand 62 states and 124 transitions. Second operand 4 states. [2020-04-18 11:30:23,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:23,591 INFO L93 Difference]: Finished difference Result 62 states and 124 transitions. [2020-04-18 11:30:23,591 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 124 transitions. [2020-04-18 11:30:23,592 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:30:23,592 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1893880944] [2020-04-18 11:30:23,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:30:23,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:30:23,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1893880944] [2020-04-18 11:30:23,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:30:23,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:30:23,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:30:23,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:30:23,594 INFO L87 Difference]: Start difference. First operand 898 states and 3114 transitions. Second operand 5 states. [2020-04-18 11:30:23,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:23,633 INFO L93 Difference]: Finished difference Result 952 states and 3222 transitions. [2020-04-18 11:30:23,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 11:30:23,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 11:30:23,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:30:23,640 INFO L225 Difference]: With dead ends: 952 [2020-04-18 11:30:23,641 INFO L226 Difference]: Without dead ends: 844 [2020-04-18 11:30:23,641 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 11:30:23,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-04-18 11:30:23,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 844. [2020-04-18 11:30:23,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2020-04-18 11:30:23,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2898 transitions. [2020-04-18 11:30:23,674 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2898 transitions. Word has length 14 [2020-04-18 11:30:23,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:30:23,675 INFO L479 AbstractCegarLoop]: Abstraction has 844 states and 2898 transitions. [2020-04-18 11:30:23,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:30:23,675 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2898 transitions. [2020-04-18 11:30:23,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:30:23,677 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:30:23,677 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:30:23,678 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:30:23,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:23,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1152352578, now seen corresponding path program 1 times [2020-04-18 11:30:23,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:30:23,679 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [440409208] [2020-04-18 11:30:23,680 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:23,682 INFO L259 McrAutomatonBuilder]: Finished intersection with 94 states and 240 transitions. [2020-04-18 11:30:23,684 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-04-18 11:30:23,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:30:23,685 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:30:23,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:23,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1151549988, now seen corresponding path program 2 times [2020-04-18 11:30:23,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:23,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459489986] [2020-04-18 11:30:23,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:23,755 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 11:30:23,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459489986] [2020-04-18 11:30:23,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:23,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:23,756 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:23,757 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:23,762 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 65 transitions. [2020-04-18 11:30:23,762 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:23,771 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:30:23,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:23,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:30:23,772 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 4 states. [2020-04-18 11:30:23,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:23,789 INFO L93 Difference]: Finished difference Result 110 states and 272 transitions. [2020-04-18 11:30:23,789 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 272 transitions. [2020-04-18 11:30:23,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:30:23,790 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:30:23,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:23,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1152328398, now seen corresponding path program 3 times [2020-04-18 11:30:23,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:23,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52470541] [2020-04-18 11:30:23,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:23,850 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 11:30:23,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52470541] [2020-04-18 11:30:23,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:23,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:23,851 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:23,853 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:23,859 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 77 transitions. [2020-04-18 11:30:23,859 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:23,866 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:30:23,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:23,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:30:23,867 INFO L87 Difference]: Start difference. First operand 110 states and 272 transitions. Second operand 4 states. [2020-04-18 11:30:23,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:23,881 INFO L93 Difference]: Finished difference Result 134 states and 316 transitions. [2020-04-18 11:30:23,881 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 316 transitions. [2020-04-18 11:30:23,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:30:23,882 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:30:23,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:23,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1152352578, now seen corresponding path program 4 times [2020-04-18 11:30:23,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:23,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505825511] [2020-04-18 11:30:23,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:23,927 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 11:30:23,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505825511] [2020-04-18 11:30:23,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:23,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:30:23,928 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:23,931 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:23,942 INFO L259 McrAutomatonBuilder]: Finished intersection with 64 states and 146 transitions. [2020-04-18 11:30:23,943 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:24,049 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:30:24,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:30:24,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:30:24,051 INFO L87 Difference]: Start difference. First operand 134 states and 316 transitions. Second operand 6 states. [2020-04-18 11:30:24,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:24,075 INFO L93 Difference]: Finished difference Result 134 states and 316 transitions. [2020-04-18 11:30:24,075 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 316 transitions. [2020-04-18 11:30:24,076 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:30:24,076 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [440409208] [2020-04-18 11:30:24,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:30:24,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:30:24,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [440409208] [2020-04-18 11:30:24,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 11:30:24,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:30:24,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:30:24,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:30:24,078 INFO L87 Difference]: Start difference. First operand 844 states and 2898 transitions. Second operand 8 states. [2020-04-18 11:30:24,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:24,176 INFO L93 Difference]: Finished difference Result 1063 states and 3587 transitions. [2020-04-18 11:30:24,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 11:30:24,176 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-04-18 11:30:24,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:30:24,181 INFO L225 Difference]: With dead ends: 1063 [2020-04-18 11:30:24,181 INFO L226 Difference]: Without dead ends: 472 [2020-04-18 11:30:24,185 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:30:24,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-04-18 11:30:24,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2020-04-18 11:30:24,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-04-18 11:30:24,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1500 transitions. [2020-04-18 11:30:24,204 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1500 transitions. Word has length 15 [2020-04-18 11:30:24,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:30:24,204 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 1500 transitions. [2020-04-18 11:30:24,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 11:30:24,205 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1500 transitions. [2020-04-18 11:30:24,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:30:24,206 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:30:24,206 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:30:24,206 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:30:24,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:24,207 INFO L82 PathProgramCache]: Analyzing trace with hash 508938520, now seen corresponding path program 1 times [2020-04-18 11:30:24,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:30:24,207 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [243081209] [2020-04-18 11:30:24,209 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:24,212 INFO L259 McrAutomatonBuilder]: Finished intersection with 126 states and 344 transitions. [2020-04-18 11:30:24,213 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states. [2020-04-18 11:30:24,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:30:24,215 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:30:24,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:24,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1338349554, now seen corresponding path program 2 times [2020-04-18 11:30:24,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:24,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673990039] [2020-04-18 11:30:24,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:24,271 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 11:30:24,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673990039] [2020-04-18 11:30:24,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:24,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:24,272 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:24,274 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:24,280 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 73 transitions. [2020-04-18 11:30:24,281 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:24,293 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:30:24,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:24,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:30:24,294 INFO L87 Difference]: Start difference. First operand 126 states. Second operand 4 states. [2020-04-18 11:30:24,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:24,313 INFO L93 Difference]: Finished difference Result 158 states and 424 transitions. [2020-04-18 11:30:24,313 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 424 transitions. [2020-04-18 11:30:24,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:30:24,314 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:30:24,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:24,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1364383044, now seen corresponding path program 3 times [2020-04-18 11:30:24,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:24,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723946535] [2020-04-18 11:30:24,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:24,393 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 11:30:24,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723946535] [2020-04-18 11:30:24,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:24,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:24,395 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:24,397 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:24,403 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 94 transitions. [2020-04-18 11:30:24,404 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:24,415 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:30:24,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:24,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:30:24,416 INFO L87 Difference]: Start difference. First operand 158 states and 424 transitions. Second operand 4 states. [2020-04-18 11:30:24,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:24,432 INFO L93 Difference]: Finished difference Result 198 states and 508 transitions. [2020-04-18 11:30:24,432 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 508 transitions. [2020-04-18 11:30:24,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:30:24,433 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:30:24,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:24,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1364407224, now seen corresponding path program 4 times [2020-04-18 11:30:24,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:24,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624007141] [2020-04-18 11:30:24,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:24,507 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 11:30:24,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624007141] [2020-04-18 11:30:24,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:24,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:30:24,509 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:24,510 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:24,521 INFO L259 McrAutomatonBuilder]: Finished intersection with 74 states and 170 transitions. [2020-04-18 11:30:24,521 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:24,576 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:30:24,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:30:24,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:30:24,578 INFO L87 Difference]: Start difference. First operand 198 states and 508 transitions. Second operand 6 states. [2020-04-18 11:30:24,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:24,625 INFO L93 Difference]: Finished difference Result 230 states and 562 transitions. [2020-04-18 11:30:24,625 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 562 transitions. [2020-04-18 11:30:24,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:30:24,626 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:30:24,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:24,626 INFO L82 PathProgramCache]: Analyzing trace with hash 508938520, now seen corresponding path program 5 times [2020-04-18 11:30:24,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:24,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657718480] [2020-04-18 11:30:24,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:24,706 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 11:30:24,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657718480] [2020-04-18 11:30:24,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:24,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:30:24,708 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:24,710 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:24,717 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 100 transitions. [2020-04-18 11:30:24,717 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:24,784 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 11:30:24,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:30:24,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-04-18 11:30:24,785 INFO L87 Difference]: Start difference. First operand 230 states and 562 transitions. Second operand 6 states. [2020-04-18 11:30:24,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:24,815 INFO L93 Difference]: Finished difference Result 230 states and 562 transitions. [2020-04-18 11:30:24,815 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 562 transitions. [2020-04-18 11:30:24,816 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:30:24,817 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [243081209] [2020-04-18 11:30:24,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:30:24,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:30:24,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [243081209] [2020-04-18 11:30:24,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:30:24,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:30:24,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:30:24,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:30:24,818 INFO L87 Difference]: Start difference. First operand 472 states and 1500 transitions. Second operand 11 states. [2020-04-18 11:30:24,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:24,969 INFO L93 Difference]: Finished difference Result 622 states and 1921 transitions. [2020-04-18 11:30:24,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 11:30:24,970 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2020-04-18 11:30:24,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:30:24,973 INFO L225 Difference]: With dead ends: 622 [2020-04-18 11:30:24,973 INFO L226 Difference]: Without dead ends: 304 [2020-04-18 11:30:24,973 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 11:30:24,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-04-18 11:30:24,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2020-04-18 11:30:24,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-04-18 11:30:24,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 882 transitions. [2020-04-18 11:30:24,983 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 882 transitions. Word has length 16 [2020-04-18 11:30:24,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:30:24,984 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 882 transitions. [2020-04-18 11:30:24,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:30:24,984 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 882 transitions. [2020-04-18 11:30:24,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:30:24,985 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:30:24,985 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 11:30:24,985 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:30:24,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:24,985 INFO L82 PathProgramCache]: Analyzing trace with hash -583625760, now seen corresponding path program 1 times [2020-04-18 11:30:24,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:30:24,986 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1352499333] [2020-04-18 11:30:24,987 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:24,990 INFO L259 McrAutomatonBuilder]: Finished intersection with 186 states and 542 transitions. [2020-04-18 11:30:24,991 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-04-18 11:30:24,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:30:24,995 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:30:24,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:24,995 INFO L82 PathProgramCache]: Analyzing trace with hash 289289002, now seen corresponding path program 2 times [2020-04-18 11:30:24,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:24,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927156959] [2020-04-18 11:30:24,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:25,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:30:25,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927156959] [2020-04-18 11:30:25,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:25,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:25,077 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:25,082 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:25,090 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 115 transitions. [2020-04-18 11:30:25,090 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:25,099 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:30:25,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:25,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:30:25,100 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 4 states. [2020-04-18 11:30:25,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:25,117 INFO L93 Difference]: Finished difference Result 234 states and 670 transitions. [2020-04-18 11:30:25,117 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 670 transitions. [2020-04-18 11:30:25,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:30:25,118 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:30:25,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:25,119 INFO L82 PathProgramCache]: Analyzing trace with hash 263255512, now seen corresponding path program 3 times [2020-04-18 11:30:25,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:25,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485349584] [2020-04-18 11:30:25,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:25,211 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 11:30:25,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485349584] [2020-04-18 11:30:25,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:25,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:25,212 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:25,214 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:25,225 INFO L259 McrAutomatonBuilder]: Finished intersection with 72 states and 149 transitions. [2020-04-18 11:30:25,225 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:25,235 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:30:25,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:25,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:30:25,236 INFO L87 Difference]: Start difference. First operand 234 states and 670 transitions. Second operand 4 states. [2020-04-18 11:30:25,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:25,256 INFO L93 Difference]: Finished difference Result 294 states and 806 transitions. [2020-04-18 11:30:25,257 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 806 transitions. [2020-04-18 11:30:25,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:30:25,258 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:30:25,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:25,259 INFO L82 PathProgramCache]: Analyzing trace with hash 263231332, now seen corresponding path program 4 times [2020-04-18 11:30:25,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:25,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203953808] [2020-04-18 11:30:25,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:25,332 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 11:30:25,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203953808] [2020-04-18 11:30:25,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:25,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:30:25,333 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:25,335 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:25,345 INFO L259 McrAutomatonBuilder]: Finished intersection with 78 states and 166 transitions. [2020-04-18 11:30:25,345 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:25,387 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:30:25,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:30:25,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:30:25,388 INFO L87 Difference]: Start difference. First operand 294 states and 806 transitions. Second operand 6 states. [2020-04-18 11:30:25,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:25,432 INFO L93 Difference]: Finished difference Result 342 states and 895 transitions. [2020-04-18 11:30:25,432 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 895 transitions. [2020-04-18 11:30:25,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:30:25,433 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:30:25,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:25,434 INFO L82 PathProgramCache]: Analyzing trace with hash -583625760, now seen corresponding path program 5 times [2020-04-18 11:30:25,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:25,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68840693] [2020-04-18 11:30:25,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:25,507 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 11:30:25,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68840693] [2020-04-18 11:30:25,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:25,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:30:25,508 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:25,510 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:25,517 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 94 transitions. [2020-04-18 11:30:25,517 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:25,552 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:30:25,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:30:25,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-04-18 11:30:25,553 INFO L87 Difference]: Start difference. First operand 342 states and 895 transitions. Second operand 5 states. [2020-04-18 11:30:25,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:25,584 INFO L93 Difference]: Finished difference Result 342 states and 895 transitions. [2020-04-18 11:30:25,584 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 895 transitions. [2020-04-18 11:30:25,585 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:30:25,586 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1352499333] [2020-04-18 11:30:25,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:30:25,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:30:25,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1352499333] [2020-04-18 11:30:25,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 11:30:25,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:30:25,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 11:30:25,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:30:25,587 INFO L87 Difference]: Start difference. First operand 304 states and 882 transitions. Second operand 10 states. [2020-04-18 11:30:25,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:25,705 INFO L93 Difference]: Finished difference Result 388 states and 1110 transitions. [2020-04-18 11:30:25,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 11:30:25,706 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-04-18 11:30:25,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:30:25,707 INFO L225 Difference]: With dead ends: 388 [2020-04-18 11:30:25,707 INFO L226 Difference]: Without dead ends: 172 [2020-04-18 11:30:25,708 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 11:30:25,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-04-18 11:30:25,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-04-18 11:30:25,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-04-18 11:30:25,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 452 transitions. [2020-04-18 11:30:25,713 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 452 transitions. Word has length 17 [2020-04-18 11:30:25,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:30:25,714 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 452 transitions. [2020-04-18 11:30:25,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 11:30:25,714 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 452 transitions. [2020-04-18 11:30:25,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:30:25,715 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:30:25,715 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 11:30:25,715 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:30:25,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:25,715 INFO L82 PathProgramCache]: Analyzing trace with hash -180488596, now seen corresponding path program 1 times [2020-04-18 11:30:25,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:30:25,716 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [601409832] [2020-04-18 11:30:25,717 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:25,721 INFO L259 McrAutomatonBuilder]: Finished intersection with 270 states and 838 transitions. [2020-04-18 11:30:25,723 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states. [2020-04-18 11:30:25,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:30:25,724 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:30:25,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:25,725 INFO L82 PathProgramCache]: Analyzing trace with hash 378023190, now seen corresponding path program 2 times [2020-04-18 11:30:25,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:25,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294307826] [2020-04-18 11:30:25,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:25,763 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 11:30:25,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294307826] [2020-04-18 11:30:25,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:25,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:25,765 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:25,767 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:25,774 INFO L259 McrAutomatonBuilder]: Finished intersection with 64 states and 123 transitions. [2020-04-18 11:30:25,775 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:25,784 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:30:25,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:25,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:30:25,786 INFO L87 Difference]: Start difference. First operand 270 states. Second operand 4 states. [2020-04-18 11:30:25,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:25,799 INFO L93 Difference]: Finished difference Result 342 states and 1042 transitions. [2020-04-18 11:30:25,799 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 1042 transitions. [2020-04-18 11:30:25,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:30:25,800 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:30:25,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:25,801 INFO L82 PathProgramCache]: Analyzing trace with hash -429015000, now seen corresponding path program 3 times [2020-04-18 11:30:25,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:25,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634496998] [2020-04-18 11:30:25,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:25,847 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 11:30:25,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634496998] [2020-04-18 11:30:25,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:25,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:25,848 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:25,850 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:25,860 INFO L259 McrAutomatonBuilder]: Finished intersection with 76 states and 157 transitions. [2020-04-18 11:30:25,860 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:25,869 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:30:25,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:25,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:30:25,870 INFO L87 Difference]: Start difference. First operand 342 states and 1042 transitions. Second operand 4 states. [2020-04-18 11:30:25,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:25,884 INFO L93 Difference]: Finished difference Result 462 states and 1374 transitions. [2020-04-18 11:30:25,884 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 1374 transitions. [2020-04-18 11:30:25,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:30:25,886 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:30:25,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:25,886 INFO L82 PathProgramCache]: Analyzing trace with hash -429764580, now seen corresponding path program 4 times [2020-04-18 11:30:25,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:25,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728628946] [2020-04-18 11:30:25,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:25,945 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 11:30:25,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728628946] [2020-04-18 11:30:25,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:25,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:30:25,946 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:25,949 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:25,959 INFO L259 McrAutomatonBuilder]: Finished intersection with 88 states and 189 transitions. [2020-04-18 11:30:25,960 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:26,000 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:30:26,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:30:26,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:30:26,001 INFO L87 Difference]: Start difference. First operand 462 states and 1374 transitions. Second operand 6 states. [2020-04-18 11:30:26,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:26,089 INFO L93 Difference]: Finished difference Result 540 states and 1537 transitions. [2020-04-18 11:30:26,090 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 1537 transitions. [2020-04-18 11:30:26,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:30:26,091 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:30:26,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:26,092 INFO L82 PathProgramCache]: Analyzing trace with hash -912530656, now seen corresponding path program 5 times [2020-04-18 11:30:26,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:26,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648525155] [2020-04-18 11:30:26,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:26,132 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 11:30:26,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648525155] [2020-04-18 11:30:26,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:26,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:30:26,133 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:26,135 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:26,143 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 111 transitions. [2020-04-18 11:30:26,143 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:26,169 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:30:26,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:30:26,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-04-18 11:30:26,170 INFO L87 Difference]: Start difference. First operand 540 states and 1537 transitions. Second operand 5 states. [2020-04-18 11:30:26,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:26,219 INFO L93 Difference]: Finished difference Result 633 states and 1749 transitions. [2020-04-18 11:30:26,219 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1749 transitions. [2020-04-18 11:30:26,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:30:26,223 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:30:26,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:26,224 INFO L82 PathProgramCache]: Analyzing trace with hash -180488596, now seen corresponding path program 6 times [2020-04-18 11:30:26,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:26,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847285991] [2020-04-18 11:30:26,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:26,279 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 11:30:26,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847285991] [2020-04-18 11:30:26,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:26,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:30:26,280 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:26,281 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:26,286 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 56 transitions. [2020-04-18 11:30:26,286 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:26,316 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:30:26,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:30:26,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2020-04-18 11:30:26,316 INFO L87 Difference]: Start difference. First operand 633 states and 1749 transitions. Second operand 5 states. [2020-04-18 11:30:26,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:26,345 INFO L93 Difference]: Finished difference Result 633 states and 1749 transitions. [2020-04-18 11:30:26,345 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1749 transitions. [2020-04-18 11:30:26,347 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:30:26,347 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [601409832] [2020-04-18 11:30:26,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:30:26,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:30:26,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [601409832] [2020-04-18 11:30:26,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 11:30:26,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:30:26,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 11:30:26,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2020-04-18 11:30:26,349 INFO L87 Difference]: Start difference. First operand 172 states and 452 transitions. Second operand 12 states. [2020-04-18 11:30:26,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:26,448 INFO L93 Difference]: Finished difference Result 148 states and 376 transitions. [2020-04-18 11:30:26,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 11:30:26,448 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-04-18 11:30:26,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:30:26,449 INFO L225 Difference]: With dead ends: 148 [2020-04-18 11:30:26,449 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:30:26,449 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 11:30:26,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:30:26,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:30:26,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:30:26,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:30:26,450 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-18 11:30:26,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:30:26,451 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:30:26,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 11:30:26,451 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:30:26,451 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:30:26,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:30:26 BasicIcfg [2020-04-18 11:30:26,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:30:26,457 INFO L168 Benchmark]: Toolchain (without parser) took 8677.15 ms. Allocated memory was 139.5 MB in the beginning and 321.9 MB in the end (delta: 182.5 MB). Free memory was 102.3 MB in the beginning and 200.7 MB in the end (delta: -98.4 MB). Peak memory consumption was 84.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:30:26,457 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 139.5 MB. Free memory is still 122.4 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 11:30:26,458 INFO L168 Benchmark]: CACSL2BoogieTranslator took 715.97 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 100.4 MB in the beginning and 158.3 MB in the end (delta: -57.9 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-04-18 11:30:26,458 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.80 ms. Allocated memory is still 203.9 MB. Free memory was 158.3 MB in the beginning and 156.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:30:26,459 INFO L168 Benchmark]: Boogie Preprocessor took 26.84 ms. Allocated memory is still 203.9 MB. Free memory was 156.3 MB in the beginning and 154.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:30:26,459 INFO L168 Benchmark]: RCFGBuilder took 513.74 ms. Allocated memory is still 203.9 MB. Free memory was 154.4 MB in the beginning and 130.0 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-04-18 11:30:26,460 INFO L168 Benchmark]: TraceAbstraction took 7351.59 ms. Allocated memory was 203.9 MB in the beginning and 321.9 MB in the end (delta: 118.0 MB). Free memory was 129.3 MB in the beginning and 200.7 MB in the end (delta: -71.4 MB). Peak memory consumption was 46.6 MB. Max. memory is 7.1 GB. [2020-04-18 11:30:26,462 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 139.5 MB. Free memory is still 122.4 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 715.97 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 100.4 MB in the beginning and 158.3 MB in the end (delta: -57.9 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.80 ms. Allocated memory is still 203.9 MB. Free memory was 158.3 MB in the beginning and 156.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.84 ms. Allocated memory is still 203.9 MB. Free memory was 156.3 MB in the beginning and 154.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 513.74 ms. Allocated memory is still 203.9 MB. Free memory was 154.4 MB in the beginning and 130.0 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7351.59 ms. Allocated memory was 203.9 MB in the beginning and 321.9 MB in the end (delta: 118.0 MB). Free memory was 129.3 MB in the beginning and 200.7 MB in the end (delta: -71.4 MB). Peak memory consumption was 46.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.1s, 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: 7.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.8s, 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, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 480 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 1.0s 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: 0.4s 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...