/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/safe023_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:26:13,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:26:13,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:26:13,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:26:13,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:26:13,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:26:13,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:26:13,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:26:13,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:26:13,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:26:13,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:26:13,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:26:13,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:26:13,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:26:13,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:26:13,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:26:13,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:26:13,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:26:13,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:26:13,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:26:13,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:26:13,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:26:13,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:26:13,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:26:13,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:26:13,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:26:13,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:26:13,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:26:13,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:26:13,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:26:13,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:26:13,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:26:13,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:26:13,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:26:13,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:26:13,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:26:13,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:26:13,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:26:13,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:26:13,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:26:13,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:26:13,516 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 15:26:13,532 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:26:13,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:26:13,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:26:13,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:26:13,534 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:26:13,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:26:13,535 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:26:13,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:26:13,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:26:13,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:26:13,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:26:13,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:26:13,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:26:13,536 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:26:13,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:26:13,536 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:26:13,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:26:13,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:26:13,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:26:13,537 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:26:13,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:26:13,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:26:13,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:26:13,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:26:13,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:26:13,538 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:26:13,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:26:13,539 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:26:13,539 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:26:13,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:26:13,539 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:26:13,811 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:26:13,828 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:26:13,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:26:13,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:26:13,833 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:26:13,834 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2020-04-18 15:26:13,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed9352940/b2826ae86ea6419d8cad62b66a006803/FLAG942462319 [2020-04-18 15:26:14,430 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:26:14,431 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2020-04-18 15:26:14,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed9352940/b2826ae86ea6419d8cad62b66a006803/FLAG942462319 [2020-04-18 15:26:14,719 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed9352940/b2826ae86ea6419d8cad62b66a006803 [2020-04-18 15:26:14,730 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:26:14,746 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:26:14,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:26:14,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:26:14,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:26:14,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:26:14" (1/1) ... [2020-04-18 15:26:14,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40455bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:26:14, skipping insertion in model container [2020-04-18 15:26:14,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:26:14" (1/1) ... [2020-04-18 15:26:14,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:26:14,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:26:15,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:26:15,279 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:26:15,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:26:15,395 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:26:15,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:26:15 WrapperNode [2020-04-18 15:26:15,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:26:15,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:26:15,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:26:15,397 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:26:15,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:26:15" (1/1) ... [2020-04-18 15:26:15,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:26:15" (1/1) ... [2020-04-18 15:26:15,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:26:15,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:26:15,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:26:15,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:26:15,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:26:15" (1/1) ... [2020-04-18 15:26:15,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:26:15" (1/1) ... [2020-04-18 15:26:15,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:26:15" (1/1) ... [2020-04-18 15:26:15,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:26:15" (1/1) ... [2020-04-18 15:26:15,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:26:15" (1/1) ... [2020-04-18 15:26:15,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:26:15" (1/1) ... [2020-04-18 15:26:15,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:26:15" (1/1) ... [2020-04-18 15:26:15,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:26:15,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:26:15,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:26:15,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:26:15,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:26:15" (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 15:26:15,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:26:15,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:26:15,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:26:15,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:26:15,554 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:26:15,554 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:26:15,555 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:26:15,555 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:26:15,556 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:26:15,556 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:26:15,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:26:15,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:26:15,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:26:15,558 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 15:26:15,935 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:26:15,936 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:26:15,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:26:15 BoogieIcfgContainer [2020-04-18 15:26:15,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:26:15,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:26:15,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:26:15,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:26:15,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:26:14" (1/3) ... [2020-04-18 15:26:15,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8659f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:26:15, skipping insertion in model container [2020-04-18 15:26:15,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:26:15" (2/3) ... [2020-04-18 15:26:15,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8659f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:26:15, skipping insertion in model container [2020-04-18 15:26:15,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:26:15" (3/3) ... [2020-04-18 15:26:15,948 INFO L109 eAbstractionObserver]: Analyzing ICFG safe023_tso.opt.i [2020-04-18 15:26:15,957 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:26:15,958 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:26:15,964 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:26:15,965 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:26:15,988 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:15,988 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:15,989 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:15,989 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:15,990 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:15,990 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:15,990 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:15,991 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:15,991 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:15,991 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:15,991 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:15,992 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:15,992 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:15,992 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:15,993 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:15,993 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:15,993 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:15,994 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:15,998 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:15,998 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:15,998 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:15,999 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:16,005 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:16,005 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:16,006 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:16,006 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:16,008 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:16,008 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:16,009 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:16,009 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:26:16,024 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:26:16,044 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:26:16,044 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:26:16,045 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:26:16,045 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:26:16,045 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:26:16,045 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:26:16,045 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:26:16,045 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:26:16,061 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 15:26:16,063 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 15:26:16,109 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 15:26:16,109 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:26:16,114 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:26:16,117 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 15:26:16,138 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 15:26:16,138 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:26:16,139 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:26:16,141 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 15:26:16,143 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:26:17,532 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-04-18 15:26:17,735 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-04-18 15:26:17,736 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 15:26:17,740 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 15:26:17,774 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 15:26:17,776 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 15:26:17,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:26:17,785 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:26:17,786 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:26:17,786 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:26:17,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:17,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-04-18 15:26:17,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:26:17,805 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [427537169] [2020-04-18 15:26:17,828 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:17,846 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:26:17,847 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:26:17,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:26:17,848 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:26:17,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:17,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 2 times [2020-04-18 15:26:17,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:17,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291467772] [2020-04-18 15:26:17,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:18,078 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 15:26:18,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291467772] [2020-04-18 15:26:18,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:18,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:26:18,081 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:18,082 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:18,085 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:26:18,085 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:18,092 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:26:18,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:26:18,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:26:18,098 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 15:26:18,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:18,101 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:26:18,102 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:26:18,102 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:26:18,103 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [427537169] [2020-04-18 15:26:18,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:26:18,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:26:18,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [427537169] [2020-04-18 15:26:18,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:26:18,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:26:18,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:26:18,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:26:18,110 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 15:26:18,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:18,151 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-04-18 15:26:18,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:26:18,154 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 15:26:18,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:26:18,177 INFO L225 Difference]: With dead ends: 266 [2020-04-18 15:26:18,177 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 15:26:18,179 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 15:26:18,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 15:26:18,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 15:26:18,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 15:26:18,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-18 15:26:18,258 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-04-18 15:26:18,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:26:18,259 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-18 15:26:18,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:26:18,260 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-18 15:26:18,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:26:18,261 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:26:18,261 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:26:18,262 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:26:18,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:18,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1925985154, now seen corresponding path program 1 times [2020-04-18 15:26:18,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:26:18,262 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1446127742] [2020-04-18 15:26:18,263 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:18,264 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 34 transitions. [2020-04-18 15:26:18,264 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-04-18 15:26:18,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:26:18,265 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:26:18,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:18,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1925985154, now seen corresponding path program 2 times [2020-04-18 15:26:18,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:18,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056064363] [2020-04-18 15:26:18,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:18,336 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 15:26:18,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056064363] [2020-04-18 15:26:18,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:18,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:26:18,337 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:18,338 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:18,340 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 30 transitions. [2020-04-18 15:26:18,341 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:18,345 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:26:18,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:26:18,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:26:18,346 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2020-04-18 15:26:18,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:18,354 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2020-04-18 15:26:18,354 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-04-18 15:26:18,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:26:18,354 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:26:18,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:18,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1603434050, now seen corresponding path program 3 times [2020-04-18 15:26:18,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:18,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282499534] [2020-04-18 15:26:18,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:18,422 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 15:26:18,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282499534] [2020-04-18 15:26:18,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:18,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:26:18,423 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:18,424 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:18,425 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 15:26:18,426 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:18,431 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:26:18,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:26:18,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:26:18,432 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 3 states. [2020-04-18 15:26:18,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:18,434 INFO L93 Difference]: Finished difference Result 26 states and 35 transitions. [2020-04-18 15:26:18,435 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2020-04-18 15:26:18,435 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:26:18,435 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1446127742] [2020-04-18 15:26:18,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:26:18,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:26:18,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1446127742] [2020-04-18 15:26:18,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:26:18,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:26:18,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:26:18,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:26:18,438 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-04-18 15:26:18,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:18,468 INFO L93 Difference]: Finished difference Result 284 states and 746 transitions. [2020-04-18 15:26:18,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:26:18,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 15:26:18,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:26:18,473 INFO L225 Difference]: With dead ends: 284 [2020-04-18 15:26:18,473 INFO L226 Difference]: Without dead ends: 164 [2020-04-18 15:26:18,474 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 15:26:18,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-04-18 15:26:18,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-04-18 15:26:18,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-04-18 15:26:18,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 422 transitions. [2020-04-18 15:26:18,496 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 422 transitions. Word has length 10 [2020-04-18 15:26:18,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:26:18,496 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 422 transitions. [2020-04-18 15:26:18,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:26:18,496 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 422 transitions. [2020-04-18 15:26:18,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:26:18,497 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:26:18,498 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:26:18,498 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:26:18,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:18,499 INFO L82 PathProgramCache]: Analyzing trace with hash -424003265, now seen corresponding path program 1 times [2020-04-18 15:26:18,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:26:18,500 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1281153903] [2020-04-18 15:26:18,500 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:18,501 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 71 transitions. [2020-04-18 15:26:18,502 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-04-18 15:26:18,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:26:18,504 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:26:18,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:18,505 INFO L82 PathProgramCache]: Analyzing trace with hash -424003265, now seen corresponding path program 2 times [2020-04-18 15:26:18,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:18,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412472148] [2020-04-18 15:26:18,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:18,578 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 15:26:18,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412472148] [2020-04-18 15:26:18,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:18,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:26:18,580 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:18,581 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:18,583 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 44 transitions. [2020-04-18 15:26:18,583 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:18,588 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:26:18,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:26:18,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:26:18,589 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-04-18 15:26:18,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:18,590 INFO L93 Difference]: Finished difference Result 38 states and 71 transitions. [2020-04-18 15:26:18,590 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 71 transitions. [2020-04-18 15:26:18,590 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:26:18,591 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1281153903] [2020-04-18 15:26:18,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:26:18,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:26:18,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1281153903] [2020-04-18 15:26:18,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:26:18,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:26:18,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:26:18,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:26:18,592 INFO L87 Difference]: Start difference. First operand 164 states and 422 transitions. Second operand 3 states. [2020-04-18 15:26:18,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:18,603 INFO L93 Difference]: Finished difference Result 158 states and 403 transitions. [2020-04-18 15:26:18,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:26:18,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-18 15:26:18,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:26:18,605 INFO L225 Difference]: With dead ends: 158 [2020-04-18 15:26:18,606 INFO L226 Difference]: Without dead ends: 158 [2020-04-18 15:26:18,606 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 15:26:18,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-04-18 15:26:18,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-04-18 15:26:18,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-04-18 15:26:18,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 403 transitions. [2020-04-18 15:26:18,619 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 403 transitions. Word has length 11 [2020-04-18 15:26:18,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:26:18,619 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 403 transitions. [2020-04-18 15:26:18,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:26:18,619 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 403 transitions. [2020-04-18 15:26:18,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:26:18,621 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:26:18,621 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:26:18,621 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:26:18,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:18,621 INFO L82 PathProgramCache]: Analyzing trace with hash -259200532, now seen corresponding path program 1 times [2020-04-18 15:26:18,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:26:18,622 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1624344159] [2020-04-18 15:26:18,622 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:18,624 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 122 transitions. [2020-04-18 15:26:18,624 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-04-18 15:26:18,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:26:18,625 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:26:18,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:18,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1024954044, now seen corresponding path program 2 times [2020-04-18 15:26:18,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:18,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229205393] [2020-04-18 15:26:18,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:18,680 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 15:26:18,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229205393] [2020-04-18 15:26:18,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:18,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:26:18,682 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:18,683 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:18,686 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-04-18 15:26:18,686 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:18,689 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:26:18,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:26:18,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:26:18,691 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 3 states. [2020-04-18 15:26:18,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:18,694 INFO L93 Difference]: Finished difference Result 60 states and 126 transitions. [2020-04-18 15:26:18,694 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 126 transitions. [2020-04-18 15:26:18,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:26:18,695 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:26:18,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:18,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1026376944, now seen corresponding path program 3 times [2020-04-18 15:26:18,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:18,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497957019] [2020-04-18 15:26:18,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:18,775 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 15:26:18,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497957019] [2020-04-18 15:26:18,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:18,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:26:18,776 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:18,777 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:18,781 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 56 transitions. [2020-04-18 15:26:18,781 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:18,860 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 15:26:18,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:26:18,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:26:18,861 INFO L87 Difference]: Start difference. First operand 60 states and 126 transitions. Second operand 5 states. [2020-04-18 15:26:18,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:18,891 INFO L93 Difference]: Finished difference Result 86 states and 165 transitions. [2020-04-18 15:26:18,891 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 165 transitions. [2020-04-18 15:26:18,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:26:18,892 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:26:18,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:18,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1037274684, now seen corresponding path program 4 times [2020-04-18 15:26:18,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:18,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504533857] [2020-04-18 15:26:18,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:18,923 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 15:26:18,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504533857] [2020-04-18 15:26:18,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:18,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:26:18,924 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:18,925 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:18,928 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 45 transitions. [2020-04-18 15:26:18,928 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:18,936 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:26:18,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:26:18,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:26:18,937 INFO L87 Difference]: Start difference. First operand 86 states and 165 transitions. Second operand 3 states. [2020-04-18 15:26:18,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:18,940 INFO L93 Difference]: Finished difference Result 101 states and 178 transitions. [2020-04-18 15:26:18,940 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 178 transitions. [2020-04-18 15:26:18,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:26:18,941 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:26:18,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:18,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1037276064, now seen corresponding path program 5 times [2020-04-18 15:26:18,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:18,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422071678] [2020-04-18 15:26:18,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:18,978 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 15:26:18,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422071678] [2020-04-18 15:26:18,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:18,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:26:18,979 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:18,980 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:18,984 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 67 transitions. [2020-04-18 15:26:18,984 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:19,008 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:26:19,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:26:19,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:26:19,009 INFO L87 Difference]: Start difference. First operand 101 states and 178 transitions. Second operand 4 states. [2020-04-18 15:26:19,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:19,031 INFO L93 Difference]: Finished difference Result 101 states and 178 transitions. [2020-04-18 15:26:19,031 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 178 transitions. [2020-04-18 15:26:19,032 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:26:19,032 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1624344159] [2020-04-18 15:26:19,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:26:19,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:26:19,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1624344159] [2020-04-18 15:26:19,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 15:26:19,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:26:19,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 15:26:19,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:26:19,036 INFO L87 Difference]: Start difference. First operand 158 states and 403 transitions. Second operand 9 states. [2020-04-18 15:26:19,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:19,230 INFO L93 Difference]: Finished difference Result 188 states and 468 transitions. [2020-04-18 15:26:19,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 15:26:19,230 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-04-18 15:26:19,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:26:19,231 INFO L225 Difference]: With dead ends: 188 [2020-04-18 15:26:19,231 INFO L226 Difference]: Without dead ends: 110 [2020-04-18 15:26:19,232 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-04-18 15:26:19,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-04-18 15:26:19,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-04-18 15:26:19,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-04-18 15:26:19,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 255 transitions. [2020-04-18 15:26:19,241 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 255 transitions. Word has length 12 [2020-04-18 15:26:19,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:26:19,242 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 255 transitions. [2020-04-18 15:26:19,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 15:26:19,242 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 255 transitions. [2020-04-18 15:26:19,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:26:19,243 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:26:19,243 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:26:19,243 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:26:19,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:19,244 INFO L82 PathProgramCache]: Analyzing trace with hash 554696714, now seen corresponding path program 1 times [2020-04-18 15:26:19,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:26:19,244 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [9803831] [2020-04-18 15:26:19,245 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:19,247 INFO L259 McrAutomatonBuilder]: Finished intersection with 80 states and 189 transitions. [2020-04-18 15:26:19,249 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-04-18 15:26:19,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:26:19,249 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:26:19,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:19,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1769255698, now seen corresponding path program 2 times [2020-04-18 15:26:19,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:19,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881586764] [2020-04-18 15:26:19,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:19,298 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 15:26:19,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881586764] [2020-04-18 15:26:19,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:19,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:26:19,300 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:19,301 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:19,306 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 46 transitions. [2020-04-18 15:26:19,306 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:19,310 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:26:19,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:26:19,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:26:19,311 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 3 states. [2020-04-18 15:26:19,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:19,314 INFO L93 Difference]: Finished difference Result 86 states and 196 transitions. [2020-04-18 15:26:19,314 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 196 transitions. [2020-04-18 15:26:19,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:26:19,315 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:26:19,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:19,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1770678598, now seen corresponding path program 3 times [2020-04-18 15:26:19,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:19,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979015118] [2020-04-18 15:26:19,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:19,348 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 15:26:19,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979015118] [2020-04-18 15:26:19,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:19,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:26:19,349 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:19,350 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:19,356 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 85 transitions. [2020-04-18 15:26:19,356 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:19,424 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 15:26:19,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:26:19,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:26:19,425 INFO L87 Difference]: Start difference. First operand 86 states and 196 transitions. Second operand 5 states. [2020-04-18 15:26:19,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:19,453 INFO L93 Difference]: Finished difference Result 134 states and 288 transitions. [2020-04-18 15:26:19,453 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 288 transitions. [2020-04-18 15:26:19,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:26:19,454 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:26:19,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:19,454 INFO L82 PathProgramCache]: Analyzing trace with hash -2090806918, now seen corresponding path program 4 times [2020-04-18 15:26:19,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:19,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786071628] [2020-04-18 15:26:19,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:19,493 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 15:26:19,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786071628] [2020-04-18 15:26:19,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:19,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:26:19,494 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:19,495 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:19,499 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 61 transitions. [2020-04-18 15:26:19,499 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:19,508 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:26:19,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:26:19,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:26:19,509 INFO L87 Difference]: Start difference. First operand 134 states and 288 transitions. Second operand 3 states. [2020-04-18 15:26:19,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:19,513 INFO L93 Difference]: Finished difference Result 158 states and 314 transitions. [2020-04-18 15:26:19,513 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 314 transitions. [2020-04-18 15:26:19,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:26:19,514 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:26:19,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:19,515 INFO L82 PathProgramCache]: Analyzing trace with hash -2090808298, now seen corresponding path program 5 times [2020-04-18 15:26:19,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:19,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106915538] [2020-04-18 15:26:19,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:19,554 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 15:26:19,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106915538] [2020-04-18 15:26:19,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:19,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:26:19,555 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:19,556 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:19,560 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 64 transitions. [2020-04-18 15:26:19,561 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:19,577 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:26:19,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:26:19,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:26:19,578 INFO L87 Difference]: Start difference. First operand 158 states and 314 transitions. Second operand 4 states. [2020-04-18 15:26:19,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:19,590 INFO L93 Difference]: Finished difference Result 158 states and 314 transitions. [2020-04-18 15:26:19,590 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 314 transitions. [2020-04-18 15:26:19,591 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:26:19,591 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [9803831] [2020-04-18 15:26:19,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:26:19,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:26:19,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [9803831] [2020-04-18 15:26:19,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 15:26:19,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:26:19,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 15:26:19,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:26:19,593 INFO L87 Difference]: Start difference. First operand 110 states and 255 transitions. Second operand 9 states. [2020-04-18 15:26:19,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:19,888 INFO L93 Difference]: Finished difference Result 128 states and 277 transitions. [2020-04-18 15:26:19,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 15:26:19,889 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-04-18 15:26:19,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:26:19,890 INFO L225 Difference]: With dead ends: 128 [2020-04-18 15:26:19,890 INFO L226 Difference]: Without dead ends: 97 [2020-04-18 15:26:19,890 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2020-04-18 15:26:19,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-18 15:26:19,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-18 15:26:19,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-18 15:26:19,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 209 transitions. [2020-04-18 15:26:19,897 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 209 transitions. Word has length 13 [2020-04-18 15:26:19,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:26:19,897 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 209 transitions. [2020-04-18 15:26:19,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 15:26:19,897 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 209 transitions. [2020-04-18 15:26:19,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:26:19,898 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:26:19,898 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:26:19,898 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:26:19,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:19,899 INFO L82 PathProgramCache]: Analyzing trace with hash 2052968077, now seen corresponding path program 1 times [2020-04-18 15:26:19,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:26:19,899 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1519255200] [2020-04-18 15:26:19,900 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:19,902 INFO L259 McrAutomatonBuilder]: Finished intersection with 106 states and 260 transitions. [2020-04-18 15:26:19,903 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states. [2020-04-18 15:26:19,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:26:19,903 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:26:19,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:19,904 INFO L82 PathProgramCache]: Analyzing trace with hash 987649501, now seen corresponding path program 2 times [2020-04-18 15:26:19,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:19,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487871355] [2020-04-18 15:26:19,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:19,928 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 15:26:19,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487871355] [2020-04-18 15:26:19,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:19,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:26:19,929 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:19,930 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:19,933 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 51 transitions. [2020-04-18 15:26:19,934 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:19,937 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:26:19,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:26:19,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:26:19,938 INFO L87 Difference]: Start difference. First operand 106 states. Second operand 3 states. [2020-04-18 15:26:19,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:19,941 INFO L93 Difference]: Finished difference Result 118 states and 280 transitions. [2020-04-18 15:26:19,942 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 280 transitions. [2020-04-18 15:26:19,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:26:19,942 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:26:19,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:19,943 INFO L82 PathProgramCache]: Analyzing trace with hash 943530301, now seen corresponding path program 3 times [2020-04-18 15:26:19,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:19,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845895150] [2020-04-18 15:26:19,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:19,966 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 15:26:19,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845895150] [2020-04-18 15:26:19,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:19,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:26:19,967 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:19,968 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:19,973 INFO L259 McrAutomatonBuilder]: Finished intersection with 55 states and 99 transitions. [2020-04-18 15:26:19,974 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:20,015 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 15:26:20,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:26:20,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:26:20,016 INFO L87 Difference]: Start difference. First operand 118 states and 280 transitions. Second operand 5 states. [2020-04-18 15:26:20,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:20,040 INFO L93 Difference]: Finished difference Result 192 states and 435 transitions. [2020-04-18 15:26:20,040 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 435 transitions. [2020-04-18 15:26:20,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:26:20,041 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:26:20,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:20,041 INFO L82 PathProgramCache]: Analyzing trace with hash -365632737, now seen corresponding path program 4 times [2020-04-18 15:26:20,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:20,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918394535] [2020-04-18 15:26:20,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:20,065 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 15:26:20,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918394535] [2020-04-18 15:26:20,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:20,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:26:20,066 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:20,067 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:20,071 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 73 transitions. [2020-04-18 15:26:20,071 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:20,079 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:26:20,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:26:20,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:26:20,080 INFO L87 Difference]: Start difference. First operand 192 states and 435 transitions. Second operand 3 states. [2020-04-18 15:26:20,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:20,085 INFO L93 Difference]: Finished difference Result 229 states and 482 transitions. [2020-04-18 15:26:20,085 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 482 transitions. [2020-04-18 15:26:20,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:26:20,086 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:26:20,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:20,086 INFO L82 PathProgramCache]: Analyzing trace with hash -365634117, now seen corresponding path program 5 times [2020-04-18 15:26:20,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:20,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024643718] [2020-04-18 15:26:20,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:20,133 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 15:26:20,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024643718] [2020-04-18 15:26:20,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:20,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:26:20,134 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:20,135 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:20,143 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 73 transitions. [2020-04-18 15:26:20,144 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:20,161 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:26:20,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:26:20,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:26:20,162 INFO L87 Difference]: Start difference. First operand 229 states and 482 transitions. Second operand 4 states. [2020-04-18 15:26:20,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:20,181 INFO L93 Difference]: Finished difference Result 254 states and 517 transitions. [2020-04-18 15:26:20,182 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 517 transitions. [2020-04-18 15:26:20,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:26:20,183 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:26:20,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:20,183 INFO L82 PathProgramCache]: Analyzing trace with hash -341229263, now seen corresponding path program 6 times [2020-04-18 15:26:20,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:20,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634080586] [2020-04-18 15:26:20,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:20,229 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 15:26:20,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634080586] [2020-04-18 15:26:20,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:20,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:26:20,230 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:20,231 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:20,236 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 81 transitions. [2020-04-18 15:26:20,236 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:20,307 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:26:20,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:26:20,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:26:20,308 INFO L87 Difference]: Start difference. First operand 254 states and 517 transitions. Second operand 7 states. [2020-04-18 15:26:20,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:20,330 INFO L93 Difference]: Finished difference Result 254 states and 517 transitions. [2020-04-18 15:26:20,330 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 517 transitions. [2020-04-18 15:26:20,331 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:26:20,331 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1519255200] [2020-04-18 15:26:20,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:26:20,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:26:20,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1519255200] [2020-04-18 15:26:20,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 15:26:20,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:26:20,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 15:26:20,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:26:20,333 INFO L87 Difference]: Start difference. First operand 97 states and 209 transitions. Second operand 12 states. [2020-04-18 15:26:20,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:20,668 INFO L93 Difference]: Finished difference Result 99 states and 200 transitions. [2020-04-18 15:26:20,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 15:26:20,668 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-04-18 15:26:20,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:26:20,670 INFO L225 Difference]: With dead ends: 99 [2020-04-18 15:26:20,670 INFO L226 Difference]: Without dead ends: 79 [2020-04-18 15:26:20,671 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2020-04-18 15:26:20,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-04-18 15:26:20,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-04-18 15:26:20,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-04-18 15:26:20,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 157 transitions. [2020-04-18 15:26:20,686 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 157 transitions. Word has length 14 [2020-04-18 15:26:20,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:26:20,687 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 157 transitions. [2020-04-18 15:26:20,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 15:26:20,687 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 157 transitions. [2020-04-18 15:26:20,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:26:20,688 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:26:20,688 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:26:20,688 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:26:20,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:20,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1697163721, now seen corresponding path program 1 times [2020-04-18 15:26:20,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:26:20,691 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1867561293] [2020-04-18 15:26:20,692 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:20,697 INFO L259 McrAutomatonBuilder]: Finished intersection with 138 states and 352 transitions. [2020-04-18 15:26:20,698 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-04-18 15:26:20,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:26:20,699 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:26:20,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:20,699 INFO L82 PathProgramCache]: Analyzing trace with hash 52530391, now seen corresponding path program 2 times [2020-04-18 15:26:20,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:20,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209485676] [2020-04-18 15:26:20,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:20,750 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 15:26:20,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209485676] [2020-04-18 15:26:20,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:20,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:26:20,752 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:20,753 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:20,760 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 64 transitions. [2020-04-18 15:26:20,760 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:20,764 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:26:20,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:26:20,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:26:20,765 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 3 states. [2020-04-18 15:26:20,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:20,769 INFO L93 Difference]: Finished difference Result 154 states and 380 transitions. [2020-04-18 15:26:20,769 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 380 transitions. [2020-04-18 15:26:20,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:26:20,770 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:26:20,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:20,771 INFO L82 PathProgramCache]: Analyzing trace with hash 8411191, now seen corresponding path program 3 times [2020-04-18 15:26:20,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:20,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780189746] [2020-04-18 15:26:20,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:20,802 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 15:26:20,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780189746] [2020-04-18 15:26:20,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:20,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:26:20,803 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:20,805 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:20,811 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 99 transitions. [2020-04-18 15:26:20,812 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:20,863 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 15:26:20,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:26:20,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:26:20,866 INFO L87 Difference]: Start difference. First operand 154 states and 380 transitions. Second operand 5 states. [2020-04-18 15:26:20,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:20,890 INFO L93 Difference]: Finished difference Result 262 states and 623 transitions. [2020-04-18 15:26:20,890 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 623 transitions. [2020-04-18 15:26:20,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:26:20,891 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:26:20,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:20,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1550270383, now seen corresponding path program 4 times [2020-04-18 15:26:20,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:20,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093783502] [2020-04-18 15:26:20,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:20,922 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 15:26:20,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093783502] [2020-04-18 15:26:20,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:20,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:26:20,923 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:20,924 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:20,929 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 78 transitions. [2020-04-18 15:26:20,929 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:20,938 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:26:20,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:26:20,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:26:20,938 INFO L87 Difference]: Start difference. First operand 262 states and 623 transitions. Second operand 3 states. [2020-04-18 15:26:20,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:20,945 INFO L93 Difference]: Finished difference Result 313 states and 693 transitions. [2020-04-18 15:26:20,945 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 693 transitions. [2020-04-18 15:26:20,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:26:20,946 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:26:20,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:20,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1550269003, now seen corresponding path program 5 times [2020-04-18 15:26:20,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:20,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986620633] [2020-04-18 15:26:20,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:20,993 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 15:26:20,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986620633] [2020-04-18 15:26:20,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:20,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:26:20,994 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:20,995 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:21,000 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 78 transitions. [2020-04-18 15:26:21,000 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:21,018 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:26:21,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:26:21,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:26:21,020 INFO L87 Difference]: Start difference. First operand 313 states and 693 transitions. Second operand 4 states. [2020-04-18 15:26:21,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:21,044 INFO L93 Difference]: Finished difference Result 394 states and 810 transitions. [2020-04-18 15:26:21,044 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 810 transitions. [2020-04-18 15:26:21,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:26:21,046 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:26:21,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:21,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1988147819, now seen corresponding path program 6 times [2020-04-18 15:26:21,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:21,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160909484] [2020-04-18 15:26:21,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:21,089 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 15:26:21,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160909484] [2020-04-18 15:26:21,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:21,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:26:21,091 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:21,092 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:21,096 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 86 transitions. [2020-04-18 15:26:21,097 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:21,173 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:26:21,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:26:21,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:26:21,174 INFO L87 Difference]: Start difference. First operand 394 states and 810 transitions. Second operand 7 states. [2020-04-18 15:26:21,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:21,230 INFO L93 Difference]: Finished difference Result 404 states and 818 transitions. [2020-04-18 15:26:21,230 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 818 transitions. [2020-04-18 15:26:21,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:26:21,231 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:26:21,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:21,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1392130067, now seen corresponding path program 7 times [2020-04-18 15:26:21,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:21,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625026159] [2020-04-18 15:26:21,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:21,278 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 15:26:21,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625026159] [2020-04-18 15:26:21,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:21,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:26:21,279 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:21,280 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:21,287 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 84 transitions. [2020-04-18 15:26:21,288 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:21,375 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:26:21,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 15:26:21,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:26:21,375 INFO L87 Difference]: Start difference. First operand 404 states and 818 transitions. Second operand 9 states. [2020-04-18 15:26:21,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:21,444 INFO L93 Difference]: Finished difference Result 404 states and 818 transitions. [2020-04-18 15:26:21,445 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 818 transitions. [2020-04-18 15:26:21,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:26:21,446 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1867561293] [2020-04-18 15:26:21,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:26:21,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:26:21,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1867561293] [2020-04-18 15:26:21,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 15:26:21,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:26:21,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 15:26:21,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:26:21,448 INFO L87 Difference]: Start difference. First operand 79 states and 157 transitions. Second operand 14 states. [2020-04-18 15:26:21,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:21,747 INFO L93 Difference]: Finished difference Result 76 states and 149 transitions. [2020-04-18 15:26:21,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-04-18 15:26:21,747 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-04-18 15:26:21,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:26:21,748 INFO L225 Difference]: With dead ends: 76 [2020-04-18 15:26:21,748 INFO L226 Difference]: Without dead ends: 69 [2020-04-18 15:26:21,749 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2020-04-18 15:26:21,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-04-18 15:26:21,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-04-18 15:26:21,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-04-18 15:26:21,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 137 transitions. [2020-04-18 15:26:21,752 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 137 transitions. Word has length 15 [2020-04-18 15:26:21,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:26:21,752 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 137 transitions. [2020-04-18 15:26:21,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 15:26:21,753 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 137 transitions. [2020-04-18 15:26:21,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:26:21,753 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:26:21,753 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:26:21,753 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:26:21,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:21,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-04-18 15:26:21,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:26:21,754 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1126290357] [2020-04-18 15:26:21,755 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:21,758 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 15:26:21,760 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 15:26:21,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:26:21,761 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:26:21,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:21,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1057896634, now seen corresponding path program 2 times [2020-04-18 15:26:21,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:21,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646658104] [2020-04-18 15:26:21,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:21,784 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 15:26:21,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646658104] [2020-04-18 15:26:21,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:21,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:26:21,785 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:21,786 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:21,790 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 75 transitions. [2020-04-18 15:26:21,790 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:21,794 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:26:21,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:26:21,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:26:21,794 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 15:26:21,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:21,798 INFO L93 Difference]: Finished difference Result 266 states and 720 transitions. [2020-04-18 15:26:21,798 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 720 transitions. [2020-04-18 15:26:21,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:26:21,799 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:26:21,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:21,799 INFO L82 PathProgramCache]: Analyzing trace with hash -506774874, now seen corresponding path program 3 times [2020-04-18 15:26:21,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:21,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277614262] [2020-04-18 15:26:21,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:21,819 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 15:26:21,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277614262] [2020-04-18 15:26:21,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:21,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:26:21,820 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:21,821 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:21,826 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 104 transitions. [2020-04-18 15:26:21,827 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:21,846 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 15:26:21,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:26:21,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:26:21,847 INFO L87 Difference]: Start difference. First operand 266 states and 720 transitions. Second operand 4 states. [2020-04-18 15:26:21,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:21,862 INFO L93 Difference]: Finished difference Result 464 states and 1209 transitions. [2020-04-18 15:26:21,862 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1209 transitions. [2020-04-18 15:26:21,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:26:21,863 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:26:21,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:21,863 INFO L82 PathProgramCache]: Analyzing trace with hash -543808482, now seen corresponding path program 4 times [2020-04-18 15:26:21,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:21,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25565425] [2020-04-18 15:26:21,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:21,886 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 15:26:21,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25565425] [2020-04-18 15:26:21,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:21,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:26:21,887 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:21,888 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:21,893 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 84 transitions. [2020-04-18 15:26:21,894 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:21,901 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:26:21,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:26:21,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:26:21,902 INFO L87 Difference]: Start difference. First operand 464 states and 1209 transitions. Second operand 3 states. [2020-04-18 15:26:21,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:21,907 INFO L93 Difference]: Finished difference Result 617 states and 1521 transitions. [2020-04-18 15:26:21,908 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 1521 transitions. [2020-04-18 15:26:21,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:26:21,910 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:26:21,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:21,910 INFO L82 PathProgramCache]: Analyzing trace with hash -545191392, now seen corresponding path program 5 times [2020-04-18 15:26:21,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:21,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447904403] [2020-04-18 15:26:21,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:21,937 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 15:26:21,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447904403] [2020-04-18 15:26:21,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:21,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:26:21,938 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:21,939 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:21,945 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 91 transitions. [2020-04-18 15:26:21,945 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:21,989 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 15:26:21,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:26:21,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:26:21,990 INFO L87 Difference]: Start difference. First operand 617 states and 1521 transitions. Second operand 5 states. [2020-04-18 15:26:22,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:22,031 INFO L93 Difference]: Finished difference Result 929 states and 2185 transitions. [2020-04-18 15:26:22,031 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 2185 transitions. [2020-04-18 15:26:22,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:26:22,034 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:26:22,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:22,034 INFO L82 PathProgramCache]: Analyzing trace with hash -545134662, now seen corresponding path program 6 times [2020-04-18 15:26:22,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:22,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996494225] [2020-04-18 15:26:22,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:22,071 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 15:26:22,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996494225] [2020-04-18 15:26:22,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:22,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:26:22,072 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:22,074 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:22,082 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 84 transitions. [2020-04-18 15:26:22,082 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:22,116 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:26:22,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:26:22,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:26:22,117 INFO L87 Difference]: Start difference. First operand 929 states and 2185 transitions. Second operand 4 states. [2020-04-18 15:26:22,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:22,160 INFO L93 Difference]: Finished difference Result 1291 states and 2818 transitions. [2020-04-18 15:26:22,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 2818 transitions. [2020-04-18 15:26:22,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:26:22,163 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:26:22,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:22,164 INFO L82 PathProgramCache]: Analyzing trace with hash 650397828, now seen corresponding path program 7 times [2020-04-18 15:26:22,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:22,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337722191] [2020-04-18 15:26:22,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:22,204 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 15:26:22,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337722191] [2020-04-18 15:26:22,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:22,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:26:22,205 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:22,207 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:22,213 INFO L259 McrAutomatonBuilder]: Finished intersection with 54 states and 90 transitions. [2020-04-18 15:26:22,213 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:22,305 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:26:22,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:26:22,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:26:22,306 INFO L87 Difference]: Start difference. First operand 1291 states and 2818 transitions. Second operand 7 states. [2020-04-18 15:26:22,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:22,418 INFO L93 Difference]: Finished difference Result 1377 states and 2917 transitions. [2020-04-18 15:26:22,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 2917 transitions. [2020-04-18 15:26:22,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:26:22,441 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 15:26:22,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:22,442 INFO L82 PathProgramCache]: Analyzing trace with hash 2102170498, now seen corresponding path program 8 times [2020-04-18 15:26:22,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:22,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961016604] [2020-04-18 15:26:22,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:22,482 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 15:26:22,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961016604] [2020-04-18 15:26:22,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:22,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:26:22,483 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:22,484 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:22,489 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 86 transitions. [2020-04-18 15:26:22,489 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:22,583 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:26:22,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 15:26:22,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-04-18 15:26:22,584 INFO L87 Difference]: Start difference. First operand 1377 states and 2917 transitions. Second operand 9 states. [2020-04-18 15:26:22,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:22,749 INFO L93 Difference]: Finished difference Result 1385 states and 2921 transitions. [2020-04-18 15:26:22,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 2921 transitions. [2020-04-18 15:26:22,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:26:22,753 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 15:26:22,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:22,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1954137390, now seen corresponding path program 9 times [2020-04-18 15:26:22,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:22,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416334212] [2020-04-18 15:26:22,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:22,787 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 15:26:22,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416334212] [2020-04-18 15:26:22,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:22,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:26:22,788 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:22,789 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:22,793 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 63 transitions. [2020-04-18 15:26:22,793 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:22,861 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:26:22,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:26:22,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2020-04-18 15:26:22,862 INFO L87 Difference]: Start difference. First operand 1385 states and 2921 transitions. Second operand 6 states. [2020-04-18 15:26:22,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:22,913 INFO L93 Difference]: Finished difference Result 1625 states and 3446 transitions. [2020-04-18 15:26:22,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 3446 transitions. [2020-04-18 15:26:22,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:26:22,918 INFO L105 Mcr]: ---- MCR iteration 8 ---- [2020-04-18 15:26:22,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:26:22,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1156169136, now seen corresponding path program 10 times [2020-04-18 15:26:22,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:26:22,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667577469] [2020-04-18 15:26:22,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:26:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:26:22,944 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 15:26:22,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667577469] [2020-04-18 15:26:22,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:26:22,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:26:22,945 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:26:22,946 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:26:22,948 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 23 transitions. [2020-04-18 15:26:22,948 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:26:22,987 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:26:22,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:26:22,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2020-04-18 15:26:22,988 INFO L87 Difference]: Start difference. First operand 1625 states and 3446 transitions. Second operand 4 states. [2020-04-18 15:26:23,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:23,015 INFO L93 Difference]: Finished difference Result 2116 states and 4363 transitions. [2020-04-18 15:26:23,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 4363 transitions. [2020-04-18 15:26:23,021 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:26:23,022 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1126290357] [2020-04-18 15:26:23,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:26:23,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:26:23,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1126290357] [2020-04-18 15:26:23,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 15:26:23,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:26:23,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 15:26:23,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2020-04-18 15:26:23,023 INFO L87 Difference]: Start difference. First operand 69 states and 137 transitions. Second operand 20 states. [2020-04-18 15:26:23,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:26:23,609 INFO L93 Difference]: Finished difference Result 68 states and 136 transitions. [2020-04-18 15:26:23,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 15:26:23,609 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 17 [2020-04-18 15:26:23,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:26:23,610 INFO L225 Difference]: With dead ends: 68 [2020-04-18 15:26:23,610 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:26:23,611 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 175 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=448, Invalid=1904, Unknown=0, NotChecked=0, Total=2352 [2020-04-18 15:26:23,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:26:23,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:26:23,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:26:23,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:26:23,611 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 15:26:23,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:26:23,612 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:26:23,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 15:26:23,612 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:26:23,612 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:26:23,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:26:23 BasicIcfg [2020-04-18 15:26:23,616 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:26:23,617 INFO L168 Benchmark]: Toolchain (without parser) took 8886.55 ms. Allocated memory was 147.3 MB in the beginning and 318.8 MB in the end (delta: 171.4 MB). Free memory was 103.8 MB in the beginning and 270.9 MB in the end (delta: -167.1 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:26:23,618 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 147.3 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 15:26:23,618 INFO L168 Benchmark]: CACSL2BoogieTranslator took 649.62 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 102.0 MB in the beginning and 160.2 MB in the end (delta: -58.2 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:26:23,619 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.79 ms. Allocated memory is still 203.4 MB. Free memory was 160.2 MB in the beginning and 158.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 15:26:23,619 INFO L168 Benchmark]: Boogie Preprocessor took 26.84 ms. Allocated memory is still 203.4 MB. Free memory was 158.3 MB in the beginning and 156.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 15:26:23,620 INFO L168 Benchmark]: RCFGBuilder took 467.94 ms. Allocated memory is still 203.4 MB. Free memory was 156.4 MB in the beginning and 134.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:26:23,620 INFO L168 Benchmark]: TraceAbstraction took 7674.85 ms. Allocated memory was 203.4 MB in the beginning and 318.8 MB in the end (delta: 115.3 MB). Free memory was 133.5 MB in the beginning and 270.9 MB in the end (delta: -137.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 15:26:23,623 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 147.3 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 649.62 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 102.0 MB in the beginning and 160.2 MB in the end (delta: -58.2 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.79 ms. Allocated memory is still 203.4 MB. Free memory was 160.2 MB in the beginning and 158.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.84 ms. Allocated memory is still 203.4 MB. Free memory was 158.3 MB in the beginning and 156.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 467.94 ms. Allocated memory is still 203.4 MB. Free memory was 156.4 MB in the beginning and 134.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7674.85 ms. Allocated memory was 203.4 MB in the beginning and 318.8 MB in the end (delta: 115.3 MB). Free memory was 133.5 MB in the beginning and 270.9 MB in the end (delta: -137.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 665 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2768 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 159 SDtfs, 443 SDslu, 469 SDs, 0 SdLazy, 552 SolverSat, 125 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 679 GetRequests, 526 SyntacticMatches, 5 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 999 ImplicationChecksByTransitivity, 2.0s 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...