/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:14:44,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:14:44,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:14:44,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:14:44,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:14:44,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:14:44,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:14:44,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:14:44,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:14:44,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:14:44,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:14:44,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:14:44,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:14:44,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:14:44,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:14:44,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:14:44,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:14:44,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:14:44,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:14:44,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:14:44,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:14:44,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:14:44,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:14:44,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:14:44,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:14:44,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:14:44,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:14:44,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:14:44,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:14:44,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:14:44,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:14:44,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:14:44,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:14:44,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:14:44,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:14:44,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:14:44,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:14:44,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:14:44,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:14:44,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:14:44,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:14:44,411 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf [2020-04-18 15:14:44,436 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:14:44,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:14:44,438 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:14:44,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:14:44,440 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:14:44,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:14:44,441 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:14:44,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:14:44,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:14:44,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:14:44,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:14:44,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:14:44,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:14:44,442 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:14:44,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:14:44,442 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:14:44,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:14:44,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:14:44,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:14:44,444 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:14:44,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:14:44,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:14:44,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:14:44,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:14:44,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:14:44,446 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:14:44,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:14:44,446 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:14:44,450 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:14:44,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:14:44,450 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:14:44,732 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:14:44,746 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:14:44,749 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:14:44,750 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:14:44,750 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:14:44,751 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2020-04-18 15:14:44,816 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9265a28c/d2df09391e824c52a6e457278f3f5bd8/FLAG2e3ff0cc2 [2020-04-18 15:14:45,380 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:14:45,382 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2020-04-18 15:14:45,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9265a28c/d2df09391e824c52a6e457278f3f5bd8/FLAG2e3ff0cc2 [2020-04-18 15:14:45,658 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9265a28c/d2df09391e824c52a6e457278f3f5bd8 [2020-04-18 15:14:45,666 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:14:45,688 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:14:45,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:14:45,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:14:45,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:14:45,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:14:45" (1/1) ... [2020-04-18 15:14:45,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@129ac6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:45, skipping insertion in model container [2020-04-18 15:14:45,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:14:45" (1/1) ... [2020-04-18 15:14:45,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:14:45,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:14:46,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:14:46,245 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:14:46,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:14:46,372 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:14:46,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:46 WrapperNode [2020-04-18 15:14:46,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:14:46,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:14:46,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:14:46,373 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:14:46,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:46" (1/1) ... [2020-04-18 15:14:46,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:46" (1/1) ... [2020-04-18 15:14:46,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:14:46,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:14:46,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:14:46,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:14:46,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:46" (1/1) ... [2020-04-18 15:14:46,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:46" (1/1) ... [2020-04-18 15:14:46,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:46" (1/1) ... [2020-04-18 15:14:46,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:46" (1/1) ... [2020-04-18 15:14:46,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:46" (1/1) ... [2020-04-18 15:14:46,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:46" (1/1) ... [2020-04-18 15:14:46,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:46" (1/1) ... [2020-04-18 15:14:46,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:14:46,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:14:46,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:14:46,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:14:46,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:14:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:14:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:14:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:14:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:14:46,515 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:14:46,515 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:14:46,515 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:14:46,516 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:14:46,516 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:14:46,516 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:14:46,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:14:46,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:14:46,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:14:46,518 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 15:14:46,910 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:14:46,911 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:14:46,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:14:46 BoogieIcfgContainer [2020-04-18 15:14:46,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:14:46,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:14:46,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:14:46,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:14:46,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:14:45" (1/3) ... [2020-04-18 15:14:46,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40badef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:14:46, skipping insertion in model container [2020-04-18 15:14:46,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:14:46" (2/3) ... [2020-04-18 15:14:46,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40badef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:14:46, skipping insertion in model container [2020-04-18 15:14:46,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:14:46" (3/3) ... [2020-04-18 15:14:46,925 INFO L109 eAbstractionObserver]: Analyzing ICFG safe015_tso.opt.i [2020-04-18 15:14:46,935 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:14:46,936 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:14:46,943 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:14:46,944 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:14:46,969 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,969 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,970 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,970 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,971 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,971 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,971 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,972 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,972 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,972 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,973 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,973 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,973 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,974 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,974 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,974 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,975 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,975 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,979 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,979 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,980 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,980 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,987 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,988 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,988 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,988 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,991 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,991 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,991 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:46,992 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:14:47,009 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:14:47,031 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:14:47,031 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:14:47,031 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:14:47,031 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:14:47,032 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:14:47,033 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:14:47,033 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:14:47,034 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:14:47,050 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 15:14:47,052 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 15:14:47,099 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 15:14:47,099 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:14:47,104 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:14:47,107 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 15:14:47,141 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 15:14:47,141 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:14:47,142 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:14:47,144 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 15:14:47,145 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:14:48,634 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2826 [2020-04-18 15:14:48,635 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 15:14:48,639 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 15:14:48,664 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 15:14:48,667 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 15:14:48,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:14:48,677 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:14:48,678 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:14:48,679 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:14:48,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:48,686 INFO L82 PathProgramCache]: Analyzing trace with hash -2122060928, now seen corresponding path program 1 times [2020-04-18 15:14:48,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:14:48,694 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1778691810] [2020-04-18 15:14:48,711 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:48,721 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:14:48,722 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:14:48,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:14:48,723 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:14:48,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:48,724 INFO L82 PathProgramCache]: Analyzing trace with hash -2122060928, now seen corresponding path program 2 times [2020-04-18 15:14:48,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:48,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611098344] [2020-04-18 15:14:48,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:48,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:48,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611098344] [2020-04-18 15:14:48,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:48,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:14:49,000 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:49,001 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:49,004 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:14:49,004 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:49,011 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:49,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:49,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:14:49,017 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 15:14:49,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:49,021 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:14:49,021 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:14:49,021 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:14:49,022 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1778691810] [2020-04-18 15:14:49,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:14:49,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:14:49,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1778691810] [2020-04-18 15:14:49,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:14:49,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:14:49,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:49,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:14:49,028 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 15:14:49,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:49,072 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 15:14:49,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:14:49,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 15:14:49,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:14:49,107 INFO L225 Difference]: With dead ends: 282 [2020-04-18 15:14:49,109 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 15:14:49,111 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:14:49,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 15:14:49,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 15:14:49,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 15:14:49,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 15:14:49,198 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 15:14:49,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:14:49,199 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 15:14:49,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:14:49,200 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 15:14:49,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:14:49,201 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:14:49,201 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:14:49,201 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:14:49,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:49,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1359379978, now seen corresponding path program 1 times [2020-04-18 15:14:49,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:14:49,203 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1913095908] [2020-04-18 15:14:49,203 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:49,205 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-04-18 15:14:49,205 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 15:14:49,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:14:49,206 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:14:49,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:49,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1359379138, now seen corresponding path program 2 times [2020-04-18 15:14:49,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:49,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547501193] [2020-04-18 15:14:49,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:49,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547501193] [2020-04-18 15:14:49,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:49,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:49,268 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:49,269 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:49,270 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:14:49,270 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:49,275 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:49,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:49,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:14:49,276 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 15:14:49,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:49,280 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-04-18 15:14:49,280 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-04-18 15:14:49,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:14:49,280 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:14:49,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:49,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1359379978, now seen corresponding path program 3 times [2020-04-18 15:14:49,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:49,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510150408] [2020-04-18 15:14:49,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:49,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:49,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510150408] [2020-04-18 15:14:49,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:49,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:49,390 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:49,390 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:49,392 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 15:14:49,392 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:49,413 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:14:49,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:14:49,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:14:49,414 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2020-04-18 15:14:49,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:49,428 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-04-18 15:14:49,428 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-04-18 15:14:49,429 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:14:49,429 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1913095908] [2020-04-18 15:14:49,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:14:49,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:14:49,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1913095908] [2020-04-18 15:14:49,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:14:49,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:14:49,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:14:49,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:14:49,431 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 5 states. [2020-04-18 15:14:49,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:49,457 INFO L93 Difference]: Finished difference Result 278 states and 745 transitions. [2020-04-18 15:14:49,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:14:49,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 15:14:49,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:14:49,463 INFO L225 Difference]: With dead ends: 278 [2020-04-18 15:14:49,463 INFO L226 Difference]: Without dead ends: 182 [2020-04-18 15:14:49,465 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:14:49,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-18 15:14:49,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-18 15:14:49,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-18 15:14:49,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 481 transitions. [2020-04-18 15:14:49,481 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 481 transitions. Word has length 9 [2020-04-18 15:14:49,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:14:49,481 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 481 transitions. [2020-04-18 15:14:49,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:14:49,482 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 481 transitions. [2020-04-18 15:14:49,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:14:49,483 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:14:49,483 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:14:49,483 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:14:49,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:49,484 INFO L82 PathProgramCache]: Analyzing trace with hash 415019454, now seen corresponding path program 1 times [2020-04-18 15:14:49,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:14:49,484 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2040321567] [2020-04-18 15:14:49,485 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:49,485 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 30 transitions. [2020-04-18 15:14:49,486 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-04-18 15:14:49,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:14:49,486 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:14:49,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:49,487 INFO L82 PathProgramCache]: Analyzing trace with hash 415020294, now seen corresponding path program 2 times [2020-04-18 15:14:49,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:49,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883716014] [2020-04-18 15:14:49,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:49,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:49,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883716014] [2020-04-18 15:14:49,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:49,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:49,546 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:49,547 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:49,548 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-04-18 15:14:49,549 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:49,552 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:49,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:49,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:14:49,553 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2020-04-18 15:14:49,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:49,556 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2020-04-18 15:14:49,556 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2020-04-18 15:14:49,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:14:49,557 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:14:49,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:49,557 INFO L82 PathProgramCache]: Analyzing trace with hash 415019454, now seen corresponding path program 3 times [2020-04-18 15:14:49,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:49,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017245979] [2020-04-18 15:14:49,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:49,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:49,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017245979] [2020-04-18 15:14:49,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:49,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:14:49,597 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:49,598 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:49,599 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 15:14:49,600 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:49,612 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:14:49,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:14:49,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:14:49,613 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 4 states. [2020-04-18 15:14:49,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:49,628 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2020-04-18 15:14:49,628 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-04-18 15:14:49,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:14:49,629 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:14:49,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:49,629 INFO L82 PathProgramCache]: Analyzing trace with hash 808893834, now seen corresponding path program 4 times [2020-04-18 15:14:49,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:49,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813568765] [2020-04-18 15:14:49,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:49,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:49,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813568765] [2020-04-18 15:14:49,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:49,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:14:49,672 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:49,673 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:49,674 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-04-18 15:14:49,674 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:49,690 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:14:49,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:14:49,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:14:49,691 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2020-04-18 15:14:49,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:49,708 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-04-18 15:14:49,708 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-04-18 15:14:49,709 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:14:49,709 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2040321567] [2020-04-18 15:14:49,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:14:49,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:14:49,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2040321567] [2020-04-18 15:14:49,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:14:49,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:14:49,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:14:49,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:14:49,711 INFO L87 Difference]: Start difference. First operand 182 states and 481 transitions. Second operand 7 states. [2020-04-18 15:14:49,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:49,767 INFO L93 Difference]: Finished difference Result 218 states and 556 transitions. [2020-04-18 15:14:49,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 15:14:49,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-04-18 15:14:49,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:14:49,769 INFO L225 Difference]: With dead ends: 218 [2020-04-18 15:14:49,769 INFO L226 Difference]: Without dead ends: 146 [2020-04-18 15:14:49,770 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:14:49,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-18 15:14:49,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-18 15:14:49,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-18 15:14:49,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-18 15:14:49,782 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-04-18 15:14:49,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:14:49,782 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-18 15:14:49,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:14:49,782 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-18 15:14:49,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:14:49,783 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:14:49,783 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:14:49,784 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:14:49,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:49,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1558339042, now seen corresponding path program 1 times [2020-04-18 15:14:49,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:14:49,784 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1269025632] [2020-04-18 15:14:49,785 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:49,786 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 15:14:49,786 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 15:14:49,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:14:49,787 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:14:49,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:49,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1558338202, now seen corresponding path program 2 times [2020-04-18 15:14:49,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:49,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197952966] [2020-04-18 15:14:49,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:49,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:49,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197952966] [2020-04-18 15:14:49,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:49,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:49,834 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:49,836 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:49,837 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 15:14:49,838 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:49,841 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:49,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:49,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:14:49,842 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 15:14:49,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:49,846 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 15:14:49,846 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 15:14:49,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:14:49,847 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:14:49,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:49,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1558339042, now seen corresponding path program 3 times [2020-04-18 15:14:49,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:49,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63400371] [2020-04-18 15:14:49,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:49,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:49,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63400371] [2020-04-18 15:14:49,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:49,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:14:49,908 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:49,909 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:49,912 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 15:14:49,912 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:49,920 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:49,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:49,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:14:49,921 INFO L87 Difference]: Start difference. First operand 31 states and 49 transitions. Second operand 3 states. [2020-04-18 15:14:49,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:49,922 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 15:14:49,922 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 15:14:49,922 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:14:49,923 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1269025632] [2020-04-18 15:14:49,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:14:49,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:14:49,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1269025632] [2020-04-18 15:14:49,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:14:49,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:14:49,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:14:49,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:14:49,927 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 4 states. [2020-04-18 15:14:49,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:49,951 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-04-18 15:14:49,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:14:49,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 15:14:49,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:14:49,953 INFO L225 Difference]: With dead ends: 144 [2020-04-18 15:14:49,953 INFO L226 Difference]: Without dead ends: 144 [2020-04-18 15:14:49,953 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 15:14:49,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-04-18 15:14:49,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-04-18 15:14:49,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-04-18 15:14:49,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-04-18 15:14:49,976 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-04-18 15:14:49,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:14:49,979 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-04-18 15:14:49,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:14:49,979 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-04-18 15:14:49,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:14:49,980 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:14:49,980 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:14:49,981 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:14:49,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:49,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1486373385, now seen corresponding path program 1 times [2020-04-18 15:14:49,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:14:49,982 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [635708377] [2020-04-18 15:14:49,984 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:49,986 INFO L259 McrAutomatonBuilder]: Finished intersection with 54 states and 118 transitions. [2020-04-18 15:14:49,988 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-04-18 15:14:49,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:14:50,017 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:14:50,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:50,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1063843815, now seen corresponding path program 2 times [2020-04-18 15:14:50,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:50,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979010369] [2020-04-18 15:14:50,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:50,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:50,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979010369] [2020-04-18 15:14:50,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:50,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:50,050 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:50,051 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:50,054 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-04-18 15:14:50,055 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:50,058 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:50,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:50,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:14:50,059 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2020-04-18 15:14:50,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:50,063 INFO L93 Difference]: Finished difference Result 60 states and 125 transitions. [2020-04-18 15:14:50,063 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 125 transitions. [2020-04-18 15:14:50,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:14:50,064 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:14:50,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:50,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1063869855, now seen corresponding path program 3 times [2020-04-18 15:14:50,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:50,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987076564] [2020-04-18 15:14:50,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:50,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:50,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987076564] [2020-04-18 15:14:50,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:50,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:50,120 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:50,122 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:50,125 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-04-18 15:14:50,126 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:50,131 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:50,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:50,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:14:50,131 INFO L87 Difference]: Start difference. First operand 60 states and 125 transitions. Second operand 3 states. [2020-04-18 15:14:50,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:50,137 INFO L93 Difference]: Finished difference Result 69 states and 134 transitions. [2020-04-18 15:14:50,137 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 134 transitions. [2020-04-18 15:14:50,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:14:50,138 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:14:50,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:50,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1063870665, now seen corresponding path program 4 times [2020-04-18 15:14:50,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:50,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505687018] [2020-04-18 15:14:50,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:50,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:50,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505687018] [2020-04-18 15:14:50,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:50,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:50,230 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:50,231 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:50,235 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-04-18 15:14:50,235 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:50,249 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:14:50,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:14:50,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:14:50,250 INFO L87 Difference]: Start difference. First operand 69 states and 134 transitions. Second operand 4 states. [2020-04-18 15:14:50,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:50,261 INFO L93 Difference]: Finished difference Result 69 states and 134 transitions. [2020-04-18 15:14:50,261 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 134 transitions. [2020-04-18 15:14:50,261 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:14:50,262 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [635708377] [2020-04-18 15:14:50,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:14:50,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:14:50,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [635708377] [2020-04-18 15:14:50,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 15:14:50,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:14:50,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:14:50,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:14:50,263 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 6 states. [2020-04-18 15:14:50,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:50,440 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-04-18 15:14:50,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 15:14:50,441 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-04-18 15:14:50,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:14:50,442 INFO L225 Difference]: With dead ends: 164 [2020-04-18 15:14:50,442 INFO L226 Difference]: Without dead ends: 124 [2020-04-18 15:14:50,447 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:14:50,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-04-18 15:14:50,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-04-18 15:14:50,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-04-18 15:14:50,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-04-18 15:14:50,461 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-04-18 15:14:50,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:14:50,462 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-04-18 15:14:50,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 15:14:50,462 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-04-18 15:14:50,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:14:50,463 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:14:50,463 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:14:50,463 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:14:50,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:50,463 INFO L82 PathProgramCache]: Analyzing trace with hash 887113091, now seen corresponding path program 1 times [2020-04-18 15:14:50,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:14:50,467 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2099552132] [2020-04-18 15:14:50,468 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:50,472 INFO L259 McrAutomatonBuilder]: Finished intersection with 70 states and 160 transitions. [2020-04-18 15:14:50,473 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-04-18 15:14:50,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:14:50,475 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:14:50,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:50,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1309642661, now seen corresponding path program 2 times [2020-04-18 15:14:50,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:50,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833055722] [2020-04-18 15:14:50,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:50,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:50,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833055722] [2020-04-18 15:14:50,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:50,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:50,522 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:50,523 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:50,527 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-04-18 15:14:50,527 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:50,531 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:50,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:50,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:14:50,532 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 3 states. [2020-04-18 15:14:50,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:50,540 INFO L93 Difference]: Finished difference Result 78 states and 170 transitions. [2020-04-18 15:14:50,540 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 170 transitions. [2020-04-18 15:14:50,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:14:50,541 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:14:50,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:50,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1309616621, now seen corresponding path program 3 times [2020-04-18 15:14:50,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:50,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148402331] [2020-04-18 15:14:50,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:50,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:50,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148402331] [2020-04-18 15:14:50,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:50,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:50,578 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:50,579 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:50,583 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-04-18 15:14:50,583 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:50,588 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:50,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:50,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:14:50,589 INFO L87 Difference]: Start difference. First operand 78 states and 170 transitions. Second operand 3 states. [2020-04-18 15:14:50,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:50,594 INFO L93 Difference]: Finished difference Result 90 states and 183 transitions. [2020-04-18 15:14:50,594 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 183 transitions. [2020-04-18 15:14:50,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:14:50,595 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:14:50,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:50,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1309615811, now seen corresponding path program 4 times [2020-04-18 15:14:50,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:50,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018154098] [2020-04-18 15:14:50,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:50,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:50,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018154098] [2020-04-18 15:14:50,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:50,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:14:50,650 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:50,651 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:50,658 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 71 transitions. [2020-04-18 15:14:50,658 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:50,677 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:50,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:14:50,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:14:50,677 INFO L87 Difference]: Start difference. First operand 90 states and 183 transitions. Second operand 5 states. [2020-04-18 15:14:50,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:50,704 INFO L93 Difference]: Finished difference Result 90 states and 183 transitions. [2020-04-18 15:14:50,705 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 183 transitions. [2020-04-18 15:14:50,705 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:14:50,705 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2099552132] [2020-04-18 15:14:50,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:14:50,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:14:50,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2099552132] [2020-04-18 15:14:50,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:14:50,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:14:50,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:14:50,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:14:50,707 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 7 states. [2020-04-18 15:14:50,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:50,861 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-04-18 15:14:50,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 15:14:50,862 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-18 15:14:50,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:14:50,863 INFO L225 Difference]: With dead ends: 122 [2020-04-18 15:14:50,863 INFO L226 Difference]: Without dead ends: 97 [2020-04-18 15:14:50,864 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-04-18 15:14:50,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-18 15:14:50,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-18 15:14:50,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-18 15:14:50,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-04-18 15:14:50,868 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-04-18 15:14:50,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:14:50,868 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-04-18 15:14:50,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:14:50,868 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-04-18 15:14:50,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:14:50,869 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:14:50,869 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:14:50,869 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:14:50,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:50,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1920279248, now seen corresponding path program 1 times [2020-04-18 15:14:50,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:14:50,870 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [709775876] [2020-04-18 15:14:50,871 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:50,872 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 122 transitions. [2020-04-18 15:14:50,873 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-04-18 15:14:50,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:14:50,873 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:14:50,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:50,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1944216008, now seen corresponding path program 2 times [2020-04-18 15:14:50,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:50,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724642476] [2020-04-18 15:14:50,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:50,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:50,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724642476] [2020-04-18 15:14:50,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:50,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:50,900 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:50,901 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:50,904 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-04-18 15:14:50,904 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:50,908 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:50,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:50,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:14:50,909 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-04-18 15:14:50,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:50,914 INFO L93 Difference]: Finished difference Result 72 states and 139 transitions. [2020-04-18 15:14:50,914 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 139 transitions. [2020-04-18 15:14:50,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:14:50,915 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:14:50,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:50,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1943408768, now seen corresponding path program 3 times [2020-04-18 15:14:50,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:50,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885429716] [2020-04-18 15:14:50,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:50,945 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 15:14:50,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885429716] [2020-04-18 15:14:50,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:50,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:50,947 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:50,948 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:50,987 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-04-18 15:14:50,988 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:50,995 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:50,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:50,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:14:50,996 INFO L87 Difference]: Start difference. First operand 72 states and 139 transitions. Second operand 3 states. [2020-04-18 15:14:50,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:50,999 INFO L93 Difference]: Finished difference Result 80 states and 149 transitions. [2020-04-18 15:14:50,999 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 149 transitions. [2020-04-18 15:14:51,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:14:51,000 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:14:51,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:51,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1943352968, now seen corresponding path program 4 times [2020-04-18 15:14:51,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:51,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458791628] [2020-04-18 15:14:51,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:51,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:51,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458791628] [2020-04-18 15:14:51,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:51,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:14:51,027 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:51,029 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:51,033 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-04-18 15:14:51,033 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:51,046 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:14:51,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:51,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:14:51,047 INFO L87 Difference]: Start difference. First operand 80 states and 149 transitions. Second operand 3 states. [2020-04-18 15:14:51,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:51,052 INFO L93 Difference]: Finished difference Result 80 states and 149 transitions. [2020-04-18 15:14:51,053 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 149 transitions. [2020-04-18 15:14:51,053 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:14:51,053 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [709775876] [2020-04-18 15:14:51,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:14:51,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:14:51,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [709775876] [2020-04-18 15:14:51,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:14:51,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:14:51,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:14:51,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:14:51,055 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 5 states. [2020-04-18 15:14:51,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:51,078 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-04-18 15:14:51,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 15:14:51,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 15:14:51,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:14:51,080 INFO L225 Difference]: With dead ends: 115 [2020-04-18 15:14:51,080 INFO L226 Difference]: Without dead ends: 98 [2020-04-18 15:14:51,081 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:14:51,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-18 15:14:51,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-04-18 15:14:51,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-04-18 15:14:51,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-04-18 15:14:51,087 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-04-18 15:14:51,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:14:51,088 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-04-18 15:14:51,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:14:51,089 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-04-18 15:14:51,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:14:51,089 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:14:51,090 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:14:51,090 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:14:51,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:51,091 INFO L82 PathProgramCache]: Analyzing trace with hash 451653261, now seen corresponding path program 1 times [2020-04-18 15:14:51,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:14:51,093 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [933394945] [2020-04-18 15:14:51,094 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:51,100 INFO L259 McrAutomatonBuilder]: Finished intersection with 138 states and 352 transitions. [2020-04-18 15:14:51,105 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-04-18 15:14:51,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:14:51,106 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:14:51,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:51,107 INFO L82 PathProgramCache]: Analyzing trace with hash 141184219, now seen corresponding path program 2 times [2020-04-18 15:14:51,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:51,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262119400] [2020-04-18 15:14:51,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:51,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:51,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262119400] [2020-04-18 15:14:51,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:51,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:51,140 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:51,142 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:51,147 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 33 transitions. [2020-04-18 15:14:51,148 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:51,152 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:51,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:51,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:14:51,153 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 3 states. [2020-04-18 15:14:51,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:51,158 INFO L93 Difference]: Finished difference Result 154 states and 376 transitions. [2020-04-18 15:14:51,158 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-04-18 15:14:51,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:14:51,159 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:14:51,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:51,160 INFO L82 PathProgramCache]: Analyzing trace with hash 116159779, now seen corresponding path program 3 times [2020-04-18 15:14:51,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:51,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800411255] [2020-04-18 15:14:51,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:51,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:51,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800411255] [2020-04-18 15:14:51,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:51,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:14:51,189 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:51,191 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:51,196 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-04-18 15:14:51,197 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:51,203 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:51,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:14:51,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:14:51,204 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 3 states. [2020-04-18 15:14:51,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:51,209 INFO L93 Difference]: Finished difference Result 190 states and 439 transitions. [2020-04-18 15:14:51,209 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 439 transitions. [2020-04-18 15:14:51,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:14:51,210 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:14:51,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:51,211 INFO L82 PathProgramCache]: Analyzing trace with hash 115313869, now seen corresponding path program 4 times [2020-04-18 15:14:51,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:51,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503953588] [2020-04-18 15:14:51,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:51,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:51,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503953588] [2020-04-18 15:14:51,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:51,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:14:51,247 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:51,248 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:51,258 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 99 transitions. [2020-04-18 15:14:51,258 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:51,324 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 15:14:51,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:14:51,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:14:51,328 INFO L87 Difference]: Start difference. First operand 190 states and 439 transitions. Second operand 5 states. [2020-04-18 15:14:51,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:51,407 INFO L93 Difference]: Finished difference Result 295 states and 630 transitions. [2020-04-18 15:14:51,407 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 630 transitions. [2020-04-18 15:14:51,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:14:51,409 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:14:51,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:51,409 INFO L82 PathProgramCache]: Analyzing trace with hash 115381369, now seen corresponding path program 5 times [2020-04-18 15:14:51,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:51,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776722217] [2020-04-18 15:14:51,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:51,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:51,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776722217] [2020-04-18 15:14:51,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:51,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:14:51,483 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:51,484 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:51,490 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 73 transitions. [2020-04-18 15:14:51,490 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:51,562 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:51,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:14:51,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:14:51,563 INFO L87 Difference]: Start difference. First operand 295 states and 630 transitions. Second operand 5 states. [2020-04-18 15:14:51,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:51,612 INFO L93 Difference]: Finished difference Result 305 states and 638 transitions. [2020-04-18 15:14:51,612 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 638 transitions. [2020-04-18 15:14:51,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:14:51,614 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:14:51,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:51,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1392131675, now seen corresponding path program 6 times [2020-04-18 15:14:51,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:51,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879605424] [2020-04-18 15:14:51,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:51,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879605424] [2020-04-18 15:14:51,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:51,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:14:51,664 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:51,666 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:51,671 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 51 transitions. [2020-04-18 15:14:51,671 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:51,705 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:14:51,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:14:51,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-04-18 15:14:51,705 INFO L87 Difference]: Start difference. First operand 305 states and 638 transitions. Second operand 4 states. [2020-04-18 15:14:51,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:51,736 INFO L93 Difference]: Finished difference Result 432 states and 842 transitions. [2020-04-18 15:14:51,736 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 842 transitions. [2020-04-18 15:14:51,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:14:51,738 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:14:51,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:51,739 INFO L82 PathProgramCache]: Analyzing trace with hash -940012763, now seen corresponding path program 7 times [2020-04-18 15:14:51,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:51,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244435154] [2020-04-18 15:14:51,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:51,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:51,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244435154] [2020-04-18 15:14:51,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:51,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:14:51,777 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:51,780 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:51,786 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 65 transitions. [2020-04-18 15:14:51,786 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:51,839 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:14:51,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:14:51,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2020-04-18 15:14:51,841 INFO L87 Difference]: Start difference. First operand 432 states and 842 transitions. Second operand 5 states. [2020-04-18 15:14:51,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:51,883 INFO L93 Difference]: Finished difference Result 541 states and 1034 transitions. [2020-04-18 15:14:51,883 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 1034 transitions. [2020-04-18 15:14:51,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:14:51,885 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 15:14:51,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:14:51,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1488530927, now seen corresponding path program 8 times [2020-04-18 15:14:51,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:14:51,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641347342] [2020-04-18 15:14:51,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:14:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:14:51,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:14:51,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641347342] [2020-04-18 15:14:51,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:14:51,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:14:51,945 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:14:51,946 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:14:51,951 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 73 transitions. [2020-04-18 15:14:51,951 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:14:52,012 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:14:52,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:14:52,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-04-18 15:14:52,013 INFO L87 Difference]: Start difference. First operand 541 states and 1034 transitions. Second operand 7 states. [2020-04-18 15:14:52,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:52,077 INFO L93 Difference]: Finished difference Result 541 states and 1034 transitions. [2020-04-18 15:14:52,077 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 1034 transitions. [2020-04-18 15:14:52,079 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:14:52,079 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [933394945] [2020-04-18 15:14:52,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:14:52,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:14:52,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [933394945] [2020-04-18 15:14:52,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 15:14:52,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:14:52,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 15:14:52,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2020-04-18 15:14:52,081 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 16 states. [2020-04-18 15:14:53,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:14:53,036 INFO L93 Difference]: Finished difference Result 133 states and 257 transitions. [2020-04-18 15:14:53,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-04-18 15:14:53,037 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 15 [2020-04-18 15:14:53,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:14:53,037 INFO L225 Difference]: With dead ends: 133 [2020-04-18 15:14:53,037 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:14:53,039 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=515, Invalid=2907, Unknown=0, NotChecked=0, Total=3422 [2020-04-18 15:14:53,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:14:53,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:14:53,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:14:53,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:14:53,040 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-04-18 15:14:53,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:14:53,040 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:14:53,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 15:14:53,040 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:14:53,040 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:14:53,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:14:53 BasicIcfg [2020-04-18 15:14:53,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:14:53,048 INFO L168 Benchmark]: Toolchain (without parser) took 7379.96 ms. Allocated memory was 137.9 MB in the beginning and 294.1 MB in the end (delta: 156.2 MB). Free memory was 101.1 MB in the beginning and 164.2 MB in the end (delta: -63.1 MB). Peak memory consumption was 93.2 MB. Max. memory is 7.1 GB. [2020-04-18 15:14:53,049 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 15:14:53,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 684.07 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 99.2 MB in the beginning and 158.4 MB in the end (delta: -59.2 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-04-18 15:14:53,050 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.59 ms. Allocated memory is still 201.9 MB. Free memory was 158.4 MB in the beginning and 156.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:14:53,056 INFO L168 Benchmark]: Boogie Preprocessor took 27.23 ms. Allocated memory is still 201.9 MB. Free memory was 156.4 MB in the beginning and 155.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 15:14:53,060 INFO L168 Benchmark]: RCFGBuilder took 465.22 ms. Allocated memory is still 201.9 MB. Free memory was 155.0 MB in the beginning and 133.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-04-18 15:14:53,060 INFO L168 Benchmark]: TraceAbstraction took 6129.01 ms. Allocated memory was 201.9 MB in the beginning and 294.1 MB in the end (delta: 92.3 MB). Free memory was 132.6 MB in the beginning and 164.2 MB in the end (delta: -31.7 MB). Peak memory consumption was 60.6 MB. Max. memory is 7.1 GB. [2020-04-18 15:14:53,065 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 684.07 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 99.2 MB in the beginning and 158.4 MB in the end (delta: -59.2 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.59 ms. Allocated memory is still 201.9 MB. Free memory was 158.4 MB in the beginning and 156.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.23 ms. Allocated memory is still 201.9 MB. Free memory was 156.4 MB in the beginning and 155.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 465.22 ms. Allocated memory is still 201.9 MB. Free memory was 155.0 MB in the beginning and 133.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6129.01 ms. Allocated memory was 201.9 MB in the beginning and 294.1 MB in the end (delta: 92.3 MB). Free memory was 132.6 MB in the beginning and 164.2 MB in the end (delta: -31.7 MB). Peak memory consumption was 60.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 655 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2826 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 159 SDtfs, 258 SDslu, 443 SDs, 0 SdLazy, 404 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 402 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...