/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-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:37:09,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:37:09,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:37:09,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:37:09,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:37:09,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:37:09,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:37:09,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:37:09,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:37:09,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:37:09,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:37:09,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:37:09,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:37:09,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:37:09,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:37:09,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:37:09,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:37:09,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:37:09,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:37:09,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:37:09,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:37:09,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:37:09,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:37:09,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:37:09,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:37:09,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:37:09,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:37:09,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:37:09,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:37:09,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:37:09,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:37:09,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:37:09,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:37:09,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:37:09,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:37:09,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:37:09,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:37:09,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:37:09,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:37:09,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:37:09,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:37:09,707 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-NoLbe-McrStrategy.epf [2020-04-18 19:37:09,721 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:37:09,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:37:09,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:37:09,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:37:09,723 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:37:09,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:37:09,723 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:37:09,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:37:09,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:37:09,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:37:09,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:37:09,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:37:09,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:37:09,724 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:37:09,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:37:09,725 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:37:09,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:37:09,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:37:09,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:37:09,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:37:09,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:37:09,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:37:09,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:37:09,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:37:09,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:37:09,727 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:37:09,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:37:09,727 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:37:09,727 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:37:09,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:37:09,728 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:37:10,050 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:37:10,063 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:37:10,067 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:37:10,068 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:37:10,069 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:37:10,070 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2020-04-18 19:37:10,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8ddb9c7e/4ddb8ed3adf8440994be6d35df491a96/FLAG8b4f8ab0b [2020-04-18 19:37:10,641 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:37:10,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2020-04-18 19:37:10,661 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8ddb9c7e/4ddb8ed3adf8440994be6d35df491a96/FLAG8b4f8ab0b [2020-04-18 19:37:10,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8ddb9c7e/4ddb8ed3adf8440994be6d35df491a96 [2020-04-18 19:37:10,980 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:37:11,003 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:37:11,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:37:11,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:37:11,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:37:11,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:37:10" (1/1) ... [2020-04-18 19:37:11,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629f08f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:37:11, skipping insertion in model container [2020-04-18 19:37:11,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:37:10" (1/1) ... [2020-04-18 19:37:11,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:37:11,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:37:11,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:37:11,529 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:37:11,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:37:11,663 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:37:11,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:37:11 WrapperNode [2020-04-18 19:37:11,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:37:11,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:37:11,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:37:11,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:37:11,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:37:11" (1/1) ... [2020-04-18 19:37:11,691 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:37:11" (1/1) ... [2020-04-18 19:37:11,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:37:11,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:37:11,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:37:11,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:37:11,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:37:11" (1/1) ... [2020-04-18 19:37:11,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:37:11" (1/1) ... [2020-04-18 19:37:11,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:37:11" (1/1) ... [2020-04-18 19:37:11,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:37:11" (1/1) ... [2020-04-18 19:37:11,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:37:11" (1/1) ... [2020-04-18 19:37:11,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:37:11" (1/1) ... [2020-04-18 19:37:11,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:37:11" (1/1) ... [2020-04-18 19:37:11,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:37:11,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:37:11,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:37:11,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:37:11,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:37:11" (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 19:37:11,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:37:11,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:37:11,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:37:11,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:37:11,857 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:37:11,858 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:37:11,858 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:37:11,858 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:37:11,858 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:37:11,858 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:37:11,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:37:11,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:37:11,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:37:11,861 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 19:37:12,289 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:37:12,289 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:37:12,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:37:12 BoogieIcfgContainer [2020-04-18 19:37:12,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:37:12,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:37:12,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:37:12,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:37:12,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:37:10" (1/3) ... [2020-04-18 19:37:12,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b385bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:37:12, skipping insertion in model container [2020-04-18 19:37:12,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:37:11" (2/3) ... [2020-04-18 19:37:12,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b385bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:37:12, skipping insertion in model container [2020-04-18 19:37:12,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:37:12" (3/3) ... [2020-04-18 19:37:12,303 INFO L109 eAbstractionObserver]: Analyzing ICFG safe018_pso.opt.i [2020-04-18 19:37:12,314 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:37:12,314 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:37:12,322 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:37:12,324 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:37:12,351 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,351 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,352 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,352 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,353 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,353 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,353 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,354 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,354 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,354 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,354 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,355 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,355 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,356 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,356 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,356 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,356 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,357 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,361 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,362 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,362 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,362 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,368 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,369 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,369 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,369 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,374 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,374 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,374 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,375 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:37:12,397 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:37:12,413 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:37:12,414 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:37:12,414 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:37:12,414 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:37:12,414 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:37:12,414 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:37:12,414 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:37:12,415 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:37:12,428 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 19:37:12,841 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7268 states. [2020-04-18 19:37:12,844 INFO L276 IsEmpty]: Start isEmpty. Operand 7268 states. [2020-04-18 19:37:12,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:37:12,871 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:37:12,872 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:37:12,872 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:37:12,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:12,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1246835585, now seen corresponding path program 1 times [2020-04-18 19:37:12,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:37:12,887 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1033289534] [2020-04-18 19:37:12,903 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:12,918 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:37:12,920 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 19:37:12,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:37:12,921 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:37:12,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:12,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1246835585, now seen corresponding path program 2 times [2020-04-18 19:37:12,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:37:12,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976706733] [2020-04-18 19:37:12,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:37:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:37:13,475 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 19:37:13,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976706733] [2020-04-18 19:37:13,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:37:13,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:37:13,479 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:37:13,483 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:13,493 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:37:13,493 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:37:13,566 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:37:13,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:37:13,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:37:13,572 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 7 states. [2020-04-18 19:37:13,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:13,681 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2020-04-18 19:37:13,682 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2020-04-18 19:37:13,682 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:37:13,685 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1033289534] [2020-04-18 19:37:13,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:37:13,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:37:13,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1033289534] [2020-04-18 19:37:13,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:37:13,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:37:13,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:37:13,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:37:13,693 INFO L87 Difference]: Start difference. First operand 7268 states. Second operand 7 states. [2020-04-18 19:37:14,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:14,132 INFO L93 Difference]: Finished difference Result 10040 states and 34690 transitions. [2020-04-18 19:37:14,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:37:14,135 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-04-18 19:37:14,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:37:14,188 INFO L225 Difference]: With dead ends: 10040 [2020-04-18 19:37:14,189 INFO L226 Difference]: Without dead ends: 3530 [2020-04-18 19:37:14,191 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 19:37:14,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3530 states. [2020-04-18 19:37:14,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3530 to 3530. [2020-04-18 19:37:14,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3530 states. [2020-04-18 19:37:14,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3530 states to 3530 states and 11925 transitions. [2020-04-18 19:37:14,470 INFO L78 Accepts]: Start accepts. Automaton has 3530 states and 11925 transitions. Word has length 36 [2020-04-18 19:37:14,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:37:14,472 INFO L479 AbstractCegarLoop]: Abstraction has 3530 states and 11925 transitions. [2020-04-18 19:37:14,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:37:14,475 INFO L276 IsEmpty]: Start isEmpty. Operand 3530 states and 11925 transitions. [2020-04-18 19:37:14,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:37:14,485 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:37:14,492 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:37:14,493 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:37:14,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:14,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1349663426, now seen corresponding path program 1 times [2020-04-18 19:37:14,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:37:14,494 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1920466818] [2020-04-18 19:37:14,495 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:14,499 INFO L259 McrAutomatonBuilder]: Finished intersection with 79 states and 118 transitions. [2020-04-18 19:37:14,502 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-04-18 19:37:14,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:37:14,504 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:37:14,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:14,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1349663426, now seen corresponding path program 2 times [2020-04-18 19:37:14,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:37:14,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397680814] [2020-04-18 19:37:14,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:37:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:37:14,753 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 19:37:14,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397680814] [2020-04-18 19:37:14,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:37:14,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:37:14,754 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:37:14,757 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:14,770 INFO L259 McrAutomatonBuilder]: Finished intersection with 67 states and 94 transitions. [2020-04-18 19:37:14,770 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:37:14,827 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:37:14,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:37:14,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:37:14,828 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 7 states. [2020-04-18 19:37:14,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:14,954 INFO L93 Difference]: Finished difference Result 79 states and 118 transitions. [2020-04-18 19:37:14,954 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions. [2020-04-18 19:37:14,955 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:37:14,955 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1920466818] [2020-04-18 19:37:14,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:37:14,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:37:14,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1920466818] [2020-04-18 19:37:14,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:37:14,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:37:14,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:37:14,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:37:14,960 INFO L87 Difference]: Start difference. First operand 3530 states and 11925 transitions. Second operand 7 states. [2020-04-18 19:37:15,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:15,452 INFO L93 Difference]: Finished difference Result 4628 states and 15552 transitions. [2020-04-18 19:37:15,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 19:37:15,453 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-04-18 19:37:15,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:37:15,483 INFO L225 Difference]: With dead ends: 4628 [2020-04-18 19:37:15,483 INFO L226 Difference]: Without dead ends: 3668 [2020-04-18 19:37:15,496 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:37:15,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3668 states. [2020-04-18 19:37:15,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3668 to 3668. [2020-04-18 19:37:15,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3668 states. [2020-04-18 19:37:15,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12382 transitions. [2020-04-18 19:37:15,669 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12382 transitions. Word has length 38 [2020-04-18 19:37:15,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:37:15,671 INFO L479 AbstractCegarLoop]: Abstraction has 3668 states and 12382 transitions. [2020-04-18 19:37:15,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:37:15,671 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12382 transitions. [2020-04-18 19:37:15,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:37:15,681 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:37:15,681 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:37:15,682 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:37:15,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:15,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1991294992, now seen corresponding path program 1 times [2020-04-18 19:37:15,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:37:15,684 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [231548597] [2020-04-18 19:37:15,686 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:15,690 INFO L259 McrAutomatonBuilder]: Finished intersection with 100 states and 159 transitions. [2020-04-18 19:37:15,694 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states. [2020-04-18 19:37:15,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:37:15,695 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:37:15,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:15,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1991294992, now seen corresponding path program 2 times [2020-04-18 19:37:15,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:37:15,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192640590] [2020-04-18 19:37:15,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:37:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:37:15,883 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 19:37:15,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192640590] [2020-04-18 19:37:15,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:37:15,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:37:15,885 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:37:15,889 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:15,897 INFO L259 McrAutomatonBuilder]: Finished intersection with 82 states and 123 transitions. [2020-04-18 19:37:15,897 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:37:15,949 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:37:15,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:37:15,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:37:15,950 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 7 states. [2020-04-18 19:37:16,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:16,007 INFO L93 Difference]: Finished difference Result 100 states and 159 transitions. [2020-04-18 19:37:16,007 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 159 transitions. [2020-04-18 19:37:16,009 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:37:16,010 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [231548597] [2020-04-18 19:37:16,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:37:16,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:37:16,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [231548597] [2020-04-18 19:37:16,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:37:16,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:37:16,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:37:16,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:37:16,012 INFO L87 Difference]: Start difference. First operand 3668 states and 12382 transitions. Second operand 7 states. [2020-04-18 19:37:16,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:16,172 INFO L93 Difference]: Finished difference Result 4052 states and 13542 transitions. [2020-04-18 19:37:16,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 19:37:16,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-04-18 19:37:16,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:37:16,197 INFO L225 Difference]: With dead ends: 4052 [2020-04-18 19:37:16,197 INFO L226 Difference]: Without dead ends: 3380 [2020-04-18 19:37:16,197 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 19:37:16,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3380 states. [2020-04-18 19:37:16,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3380 to 3380. [2020-04-18 19:37:16,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3380 states. [2020-04-18 19:37:16,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3380 states to 3380 states and 11350 transitions. [2020-04-18 19:37:16,317 INFO L78 Accepts]: Start accepts. Automaton has 3380 states and 11350 transitions. Word has length 39 [2020-04-18 19:37:16,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:37:16,317 INFO L479 AbstractCegarLoop]: Abstraction has 3380 states and 11350 transitions. [2020-04-18 19:37:16,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:37:16,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3380 states and 11350 transitions. [2020-04-18 19:37:16,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:37:16,328 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:37:16,329 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:37:16,334 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:37:16,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:16,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1507036829, now seen corresponding path program 1 times [2020-04-18 19:37:16,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:37:16,335 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1167612611] [2020-04-18 19:37:16,336 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:16,340 INFO L259 McrAutomatonBuilder]: Finished intersection with 157 states and 320 transitions. [2020-04-18 19:37:16,341 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-04-18 19:37:16,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:37:16,342 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:37:16,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:16,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1507036829, now seen corresponding path program 2 times [2020-04-18 19:37:16,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:37:16,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474156280] [2020-04-18 19:37:16,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:37:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:37:16,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:37:16,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474156280] [2020-04-18 19:37:16,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:37:16,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:37:16,459 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:37:16,463 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:16,474 INFO L259 McrAutomatonBuilder]: Finished intersection with 109 states and 200 transitions. [2020-04-18 19:37:16,474 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:37:16,551 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:37:16,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:37:16,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:37:16,558 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 8 states. [2020-04-18 19:37:16,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:16,780 INFO L93 Difference]: Finished difference Result 157 states and 320 transitions. [2020-04-18 19:37:16,780 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 320 transitions. [2020-04-18 19:37:16,781 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:37:16,781 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1167612611] [2020-04-18 19:37:16,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:37:16,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:37:16,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1167612611] [2020-04-18 19:37:16,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 19:37:16,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:37:16,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:37:16,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-04-18 19:37:16,783 INFO L87 Difference]: Start difference. First operand 3380 states and 11350 transitions. Second operand 8 states. [2020-04-18 19:37:17,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:17,389 INFO L93 Difference]: Finished difference Result 5904 states and 19698 transitions. [2020-04-18 19:37:17,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-04-18 19:37:17,390 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-04-18 19:37:17,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:37:17,437 INFO L225 Difference]: With dead ends: 5904 [2020-04-18 19:37:17,437 INFO L226 Difference]: Without dead ends: 3984 [2020-04-18 19:37:17,438 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-04-18 19:37:17,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2020-04-18 19:37:17,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 3354. [2020-04-18 19:37:17,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3354 states. [2020-04-18 19:37:17,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 11192 transitions. [2020-04-18 19:37:17,548 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 11192 transitions. Word has length 40 [2020-04-18 19:37:17,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:37:17,549 INFO L479 AbstractCegarLoop]: Abstraction has 3354 states and 11192 transitions. [2020-04-18 19:37:17,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 19:37:17,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 11192 transitions. [2020-04-18 19:37:17,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:37:17,557 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:37:17,557 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:37:17,557 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:37:17,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:17,558 INFO L82 PathProgramCache]: Analyzing trace with hash 698523509, now seen corresponding path program 1 times [2020-04-18 19:37:17,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:37:17,558 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [733198635] [2020-04-18 19:37:17,560 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:17,563 INFO L259 McrAutomatonBuilder]: Finished intersection with 204 states and 437 transitions. [2020-04-18 19:37:17,565 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states. [2020-04-18 19:37:17,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:37:17,566 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:37:17,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:17,567 INFO L82 PathProgramCache]: Analyzing trace with hash 467460881, now seen corresponding path program 2 times [2020-04-18 19:37:17,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:37:17,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144674388] [2020-04-18 19:37:17,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:37:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:37:17,711 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 19:37:17,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144674388] [2020-04-18 19:37:17,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:37:17,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:37:17,712 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:37:17,716 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:17,731 INFO L259 McrAutomatonBuilder]: Finished intersection with 138 states and 269 transitions. [2020-04-18 19:37:17,731 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:37:17,810 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 19:37:17,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:37:17,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:37:17,811 INFO L87 Difference]: Start difference. First operand 204 states. Second operand 9 states. [2020-04-18 19:37:18,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:18,426 INFO L93 Difference]: Finished difference Result 204 states and 437 transitions. [2020-04-18 19:37:18,426 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 437 transitions. [2020-04-18 19:37:18,427 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:37:18,428 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [733198635] [2020-04-18 19:37:18,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:37:18,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:37:18,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [733198635] [2020-04-18 19:37:18,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 19:37:18,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:37:18,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:37:18,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:37:18,430 INFO L87 Difference]: Start difference. First operand 3354 states and 11192 transitions. Second operand 9 states. [2020-04-18 19:37:19,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:19,103 INFO L93 Difference]: Finished difference Result 9046 states and 29577 transitions. [2020-04-18 19:37:19,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 19:37:19,104 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-04-18 19:37:19,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:37:19,135 INFO L225 Difference]: With dead ends: 9046 [2020-04-18 19:37:19,135 INFO L226 Difference]: Without dead ends: 6560 [2020-04-18 19:37:19,136 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=263, Invalid=667, Unknown=0, NotChecked=0, Total=930 [2020-04-18 19:37:19,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6560 states. [2020-04-18 19:37:19,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6560 to 3376. [2020-04-18 19:37:19,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3376 states. [2020-04-18 19:37:19,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3376 states to 3376 states and 11025 transitions. [2020-04-18 19:37:19,276 INFO L78 Accepts]: Start accepts. Automaton has 3376 states and 11025 transitions. Word has length 41 [2020-04-18 19:37:19,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:37:19,277 INFO L479 AbstractCegarLoop]: Abstraction has 3376 states and 11025 transitions. [2020-04-18 19:37:19,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 19:37:19,277 INFO L276 IsEmpty]: Start isEmpty. Operand 3376 states and 11025 transitions. [2020-04-18 19:37:19,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:37:19,284 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:37:19,284 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:37:19,284 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:37:19,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:19,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1149670460, now seen corresponding path program 1 times [2020-04-18 19:37:19,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:37:19,285 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1221665498] [2020-04-18 19:37:19,286 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:19,290 INFO L259 McrAutomatonBuilder]: Finished intersection with 196 states and 421 transitions. [2020-04-18 19:37:19,291 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-04-18 19:37:19,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:37:19,292 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:37:19,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:19,293 INFO L82 PathProgramCache]: Analyzing trace with hash -2003606400, now seen corresponding path program 2 times [2020-04-18 19:37:19,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:37:19,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683614540] [2020-04-18 19:37:19,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:37:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:37:19,402 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 19:37:19,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683614540] [2020-04-18 19:37:19,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:37:19,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:37:19,403 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:37:19,407 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:19,420 INFO L259 McrAutomatonBuilder]: Finished intersection with 122 states and 225 transitions. [2020-04-18 19:37:19,421 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:37:19,487 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:37:19,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:37:19,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:37:19,488 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 9 states. [2020-04-18 19:37:19,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:19,724 INFO L93 Difference]: Finished difference Result 213 states and 437 transitions. [2020-04-18 19:37:19,724 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 437 transitions. [2020-04-18 19:37:19,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:37:19,726 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:37:19,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:19,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1149670460, now seen corresponding path program 3 times [2020-04-18 19:37:19,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:37:19,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415955623] [2020-04-18 19:37:19,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:37:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:37:19,858 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 19:37:19,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415955623] [2020-04-18 19:37:19,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:37:19,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:37:19,859 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:37:19,865 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:19,880 INFO L259 McrAutomatonBuilder]: Finished intersection with 101 states and 177 transitions. [2020-04-18 19:37:19,880 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:37:19,970 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:37:19,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:37:19,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:37:19,972 INFO L87 Difference]: Start difference. First operand 213 states and 437 transitions. Second operand 8 states. [2020-04-18 19:37:20,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:20,074 INFO L93 Difference]: Finished difference Result 213 states and 437 transitions. [2020-04-18 19:37:20,074 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 437 transitions. [2020-04-18 19:37:20,075 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:37:20,076 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1221665498] [2020-04-18 19:37:20,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:37:20,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:37:20,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1221665498] [2020-04-18 19:37:20,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 19:37:20,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:37:20,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:37:20,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2020-04-18 19:37:20,078 INFO L87 Difference]: Start difference. First operand 3376 states and 11025 transitions. Second operand 11 states. [2020-04-18 19:37:20,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:20,367 INFO L93 Difference]: Finished difference Result 5296 states and 17061 transitions. [2020-04-18 19:37:20,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-04-18 19:37:20,367 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-04-18 19:37:20,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:37:20,375 INFO L225 Difference]: With dead ends: 5296 [2020-04-18 19:37:20,375 INFO L226 Difference]: Without dead ends: 1560 [2020-04-18 19:37:20,376 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=224, Invalid=768, Unknown=0, NotChecked=0, Total=992 [2020-04-18 19:37:20,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2020-04-18 19:37:20,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1560. [2020-04-18 19:37:20,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1560 states. [2020-04-18 19:37:20,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 4926 transitions. [2020-04-18 19:37:20,418 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 4926 transitions. Word has length 41 [2020-04-18 19:37:20,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:37:20,419 INFO L479 AbstractCegarLoop]: Abstraction has 1560 states and 4926 transitions. [2020-04-18 19:37:20,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 19:37:20,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 4926 transitions. [2020-04-18 19:37:20,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:37:20,423 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:37:20,423 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:37:20,423 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:37:20,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:20,424 INFO L82 PathProgramCache]: Analyzing trace with hash -226140987, now seen corresponding path program 1 times [2020-04-18 19:37:20,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:37:20,424 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1852206107] [2020-04-18 19:37:20,425 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:20,453 INFO L259 McrAutomatonBuilder]: Finished intersection with 532 states and 1527 transitions. [2020-04-18 19:37:20,457 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states. [2020-04-18 19:37:20,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:37:20,459 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:37:20,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:20,460 INFO L82 PathProgramCache]: Analyzing trace with hash 291530783, now seen corresponding path program 2 times [2020-04-18 19:37:20,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:37:20,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870732631] [2020-04-18 19:37:20,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:37:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:37:20,566 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 19:37:20,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870732631] [2020-04-18 19:37:20,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:37:20,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:37:20,567 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:37:20,571 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:20,598 INFO L259 McrAutomatonBuilder]: Finished intersection with 230 states and 543 transitions. [2020-04-18 19:37:20,598 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:37:20,630 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:37:20,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:37:20,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:37:20,630 INFO L87 Difference]: Start difference. First operand 532 states. Second operand 7 states. [2020-04-18 19:37:20,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:20,824 INFO L93 Difference]: Finished difference Result 583 states and 1609 transitions. [2020-04-18 19:37:20,824 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1609 transitions. [2020-04-18 19:37:20,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:37:20,826 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:37:20,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:20,826 INFO L82 PathProgramCache]: Analyzing trace with hash -226140987, now seen corresponding path program 3 times [2020-04-18 19:37:20,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:37:20,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147079028] [2020-04-18 19:37:20,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:37:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:37:20,921 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 19:37:20,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147079028] [2020-04-18 19:37:20,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:37:20,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:37:20,922 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:37:20,926 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:20,956 INFO L259 McrAutomatonBuilder]: Finished intersection with 173 states and 377 transitions. [2020-04-18 19:37:20,956 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:37:21,034 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 20 times. [2020-04-18 19:37:21,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:37:21,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:37:21,035 INFO L87 Difference]: Start difference. First operand 583 states and 1609 transitions. Second operand 6 states. [2020-04-18 19:37:21,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:21,087 INFO L93 Difference]: Finished difference Result 583 states and 1609 transitions. [2020-04-18 19:37:21,087 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1609 transitions. [2020-04-18 19:37:21,090 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:37:21,090 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1852206107] [2020-04-18 19:37:21,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:37:21,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:37:21,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1852206107] [2020-04-18 19:37:21,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 19:37:21,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:37:21,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:37:21,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:37:21,092 INFO L87 Difference]: Start difference. First operand 1560 states and 4926 transitions. Second operand 11 states. [2020-04-18 19:37:21,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:21,524 INFO L93 Difference]: Finished difference Result 2034 states and 6359 transitions. [2020-04-18 19:37:21,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-18 19:37:21,525 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-04-18 19:37:21,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:37:21,532 INFO L225 Difference]: With dead ends: 2034 [2020-04-18 19:37:21,532 INFO L226 Difference]: Without dead ends: 1458 [2020-04-18 19:37:21,533 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=272, Invalid=1134, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 19:37:21,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2020-04-18 19:37:21,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1458. [2020-04-18 19:37:21,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-04-18 19:37:21,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 4573 transitions. [2020-04-18 19:37:21,575 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 4573 transitions. Word has length 43 [2020-04-18 19:37:21,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:37:21,575 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 4573 transitions. [2020-04-18 19:37:21,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 19:37:21,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 4573 transitions. [2020-04-18 19:37:21,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:37:21,579 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:37:21,579 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:37:21,579 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:37:21,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:21,580 INFO L82 PathProgramCache]: Analyzing trace with hash 275848641, now seen corresponding path program 1 times [2020-04-18 19:37:21,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:37:21,580 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1820871083] [2020-04-18 19:37:21,582 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:21,596 INFO L259 McrAutomatonBuilder]: Finished intersection with 700 states and 2080 transitions. [2020-04-18 19:37:21,601 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states. [2020-04-18 19:37:21,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:37:21,604 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:37:21,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:21,605 INFO L82 PathProgramCache]: Analyzing trace with hash -172762391, now seen corresponding path program 2 times [2020-04-18 19:37:21,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:37:21,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953724318] [2020-04-18 19:37:21,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:37:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:37:21,682 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 19:37:21,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953724318] [2020-04-18 19:37:21,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:37:21,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:37:21,684 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:37:21,688 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:21,717 INFO L259 McrAutomatonBuilder]: Finished intersection with 202 states and 441 transitions. [2020-04-18 19:37:21,717 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:37:21,753 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:37:21,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:37:21,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:37:21,754 INFO L87 Difference]: Start difference. First operand 700 states. Second operand 7 states. [2020-04-18 19:37:21,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:21,955 INFO L93 Difference]: Finished difference Result 768 states and 2195 transitions. [2020-04-18 19:37:21,955 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 2195 transitions. [2020-04-18 19:37:21,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:37:21,958 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:37:21,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:21,958 INFO L82 PathProgramCache]: Analyzing trace with hash 275848641, now seen corresponding path program 3 times [2020-04-18 19:37:21,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:37:21,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323519483] [2020-04-18 19:37:21,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:37:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:37:22,050 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 19:37:22,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323519483] [2020-04-18 19:37:22,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:37:22,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:37:22,051 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:37:22,055 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:22,078 INFO L259 McrAutomatonBuilder]: Finished intersection with 159 states and 326 transitions. [2020-04-18 19:37:22,079 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:37:22,155 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:37:22,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:37:22,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:37:22,157 INFO L87 Difference]: Start difference. First operand 768 states and 2195 transitions. Second operand 7 states. [2020-04-18 19:37:22,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:22,281 INFO L93 Difference]: Finished difference Result 768 states and 2195 transitions. [2020-04-18 19:37:22,281 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 2195 transitions. [2020-04-18 19:37:22,283 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:37:22,284 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1820871083] [2020-04-18 19:37:22,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:37:22,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:37:22,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1820871083] [2020-04-18 19:37:22,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 19:37:22,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:37:22,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:37:22,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2020-04-18 19:37:22,286 INFO L87 Difference]: Start difference. First operand 1458 states and 4573 transitions. Second operand 12 states. [2020-04-18 19:37:22,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:22,713 INFO L93 Difference]: Finished difference Result 1647 states and 5050 transitions. [2020-04-18 19:37:22,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 19:37:22,713 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2020-04-18 19:37:22,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:37:22,718 INFO L225 Difference]: With dead ends: 1647 [2020-04-18 19:37:22,718 INFO L226 Difference]: Without dead ends: 1143 [2020-04-18 19:37:22,720 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=287, Invalid=1353, Unknown=0, NotChecked=0, Total=1640 [2020-04-18 19:37:22,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2020-04-18 19:37:22,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1143. [2020-04-18 19:37:22,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1143 states. [2020-04-18 19:37:22,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 3463 transitions. [2020-04-18 19:37:22,753 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 3463 transitions. Word has length 44 [2020-04-18 19:37:22,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:37:22,754 INFO L479 AbstractCegarLoop]: Abstraction has 1143 states and 3463 transitions. [2020-04-18 19:37:22,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 19:37:22,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 3463 transitions. [2020-04-18 19:37:22,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:37:22,757 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:37:22,757 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:37:22,758 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:37:22,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:22,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1204722609, now seen corresponding path program 1 times [2020-04-18 19:37:22,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:37:22,759 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1249179501] [2020-04-18 19:37:22,761 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:22,778 INFO L259 McrAutomatonBuilder]: Finished intersection with 856 states and 2601 transitions. [2020-04-18 19:37:22,784 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states. [2020-04-18 19:37:22,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:37:22,788 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:37:22,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:22,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1060666667, now seen corresponding path program 2 times [2020-04-18 19:37:22,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:37:22,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446235933] [2020-04-18 19:37:22,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:37:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:37:22,880 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 19:37:22,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446235933] [2020-04-18 19:37:22,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:37:22,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:37:22,882 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:37:22,888 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:22,947 INFO L259 McrAutomatonBuilder]: Finished intersection with 213 states and 462 transitions. [2020-04-18 19:37:22,947 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:37:22,994 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:37:22,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:37:22,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:37:22,995 INFO L87 Difference]: Start difference. First operand 856 states. Second operand 7 states. [2020-04-18 19:37:23,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:23,177 INFO L93 Difference]: Finished difference Result 992 states and 2899 transitions. [2020-04-18 19:37:23,177 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 2899 transitions. [2020-04-18 19:37:23,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:37:23,180 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:37:23,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:23,180 INFO L82 PathProgramCache]: Analyzing trace with hash -38626563, now seen corresponding path program 3 times [2020-04-18 19:37:23,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:37:23,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745094721] [2020-04-18 19:37:23,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:37:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:37:23,275 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 19:37:23,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745094721] [2020-04-18 19:37:23,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:37:23,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:37:23,276 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:37:23,280 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:23,299 INFO L259 McrAutomatonBuilder]: Finished intersection with 180 states and 375 transitions. [2020-04-18 19:37:23,300 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:37:23,368 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:37:23,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:37:23,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:37:23,369 INFO L87 Difference]: Start difference. First operand 992 states and 2899 transitions. Second operand 7 states. [2020-04-18 19:37:23,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:23,614 INFO L93 Difference]: Finished difference Result 992 states and 2899 transitions. [2020-04-18 19:37:23,614 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 2899 transitions. [2020-04-18 19:37:23,616 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:37:23,617 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1249179501] [2020-04-18 19:37:23,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:37:23,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:37:23,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1249179501] [2020-04-18 19:37:23,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 19:37:23,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:37:23,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:37:23,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2020-04-18 19:37:23,619 INFO L87 Difference]: Start difference. First operand 1143 states and 3463 transitions. Second operand 12 states. [2020-04-18 19:37:23,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:23,919 INFO L93 Difference]: Finished difference Result 1116 states and 3238 transitions. [2020-04-18 19:37:23,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 19:37:23,920 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-04-18 19:37:23,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:37:23,923 INFO L225 Difference]: With dead ends: 1116 [2020-04-18 19:37:23,923 INFO L226 Difference]: Without dead ends: 684 [2020-04-18 19:37:23,924 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=228, Invalid=1178, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 19:37:23,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2020-04-18 19:37:23,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 684. [2020-04-18 19:37:23,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 684 states. [2020-04-18 19:37:23,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1930 transitions. [2020-04-18 19:37:23,940 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1930 transitions. Word has length 45 [2020-04-18 19:37:23,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:37:23,941 INFO L479 AbstractCegarLoop]: Abstraction has 684 states and 1930 transitions. [2020-04-18 19:37:23,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 19:37:23,941 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1930 transitions. [2020-04-18 19:37:23,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:37:23,943 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:37:23,943 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:37:23,943 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:37:23,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:23,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1337116136, now seen corresponding path program 1 times [2020-04-18 19:37:23,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:37:23,944 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [290048915] [2020-04-18 19:37:23,946 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:23,982 INFO L259 McrAutomatonBuilder]: Finished intersection with 1416 states and 4511 transitions. [2020-04-18 19:37:23,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states. [2020-04-18 19:37:24,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:37:24,002 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:37:24,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:24,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1288039540, now seen corresponding path program 2 times [2020-04-18 19:37:24,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:37:24,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913104520] [2020-04-18 19:37:24,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:37:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:37:24,100 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 19:37:24,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913104520] [2020-04-18 19:37:24,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:37:24,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:37:24,101 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:37:24,106 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:24,133 INFO L259 McrAutomatonBuilder]: Finished intersection with 195 states and 392 transitions. [2020-04-18 19:37:24,134 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:37:24,171 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:37:24,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:37:24,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:37:24,173 INFO L87 Difference]: Start difference. First operand 1416 states. Second operand 7 states. [2020-04-18 19:37:24,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:24,383 INFO L93 Difference]: Finished difference Result 1824 states and 5677 transitions. [2020-04-18 19:37:24,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 5677 transitions. [2020-04-18 19:37:24,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:37:24,391 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:37:24,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:24,392 INFO L82 PathProgramCache]: Analyzing trace with hash 187973980, now seen corresponding path program 3 times [2020-04-18 19:37:24,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:37:24,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406879311] [2020-04-18 19:37:24,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:37:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:37:24,482 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 19:37:24,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406879311] [2020-04-18 19:37:24,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:37:24,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:37:24,483 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:37:24,488 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:24,550 INFO L259 McrAutomatonBuilder]: Finished intersection with 190 states and 386 transitions. [2020-04-18 19:37:24,551 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:37:24,595 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 19:37:24,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:37:24,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:37:24,595 INFO L87 Difference]: Start difference. First operand 1824 states and 5677 transitions. Second operand 7 states. [2020-04-18 19:37:24,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:24,944 INFO L93 Difference]: Finished difference Result 2996 states and 9011 transitions. [2020-04-18 19:37:24,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2996 states and 9011 transitions. [2020-04-18 19:37:24,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:37:24,950 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:37:24,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:24,951 INFO L82 PathProgramCache]: Analyzing trace with hash 757446078, now seen corresponding path program 4 times [2020-04-18 19:37:24,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:37:24,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836533487] [2020-04-18 19:37:24,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:37:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:37:25,042 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 19:37:25,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836533487] [2020-04-18 19:37:25,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:37:25,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:37:25,043 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:37:25,047 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:25,073 INFO L259 McrAutomatonBuilder]: Finished intersection with 177 states and 359 transitions. [2020-04-18 19:37:25,074 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:37:25,172 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:37:25,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:37:25,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=857, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 19:37:25,173 INFO L87 Difference]: Start difference. First operand 2996 states and 9011 transitions. Second operand 7 states. [2020-04-18 19:37:25,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:25,559 INFO L93 Difference]: Finished difference Result 3036 states and 9047 transitions. [2020-04-18 19:37:25,559 INFO L276 IsEmpty]: Start isEmpty. Operand 3036 states and 9047 transitions. [2020-04-18 19:37:25,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:37:25,565 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:37:25,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:37:25,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1839071384, now seen corresponding path program 5 times [2020-04-18 19:37:25,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:37:25,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678499368] [2020-04-18 19:37:25,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:37:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:37:25,668 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 19:37:25,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678499368] [2020-04-18 19:37:25,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:37:25,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:37:25,669 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:37:25,673 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:37:25,722 INFO L259 McrAutomatonBuilder]: Finished intersection with 260 states and 588 transitions. [2020-04-18 19:37:25,723 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:37:25,783 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 27 times. [2020-04-18 19:37:25,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:37:25,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=1620, Unknown=0, NotChecked=0, Total=1892 [2020-04-18 19:37:25,784 INFO L87 Difference]: Start difference. First operand 3036 states and 9047 transitions. Second operand 8 states. [2020-04-18 19:37:26,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:26,039 INFO L93 Difference]: Finished difference Result 4272 states and 12373 transitions. [2020-04-18 19:37:26,039 INFO L276 IsEmpty]: Start isEmpty. Operand 4272 states and 12373 transitions. [2020-04-18 19:37:26,045 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:37:26,046 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [290048915] [2020-04-18 19:37:26,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:37:26,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:37:26,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [290048915] [2020-04-18 19:37:26,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 19:37:26,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:37:26,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 19:37:26,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=2201, Unknown=0, NotChecked=0, Total=2550 [2020-04-18 19:37:26,050 INFO L87 Difference]: Start difference. First operand 684 states and 1930 transitions. Second operand 16 states. [2020-04-18 19:37:26,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:37:26,697 INFO L93 Difference]: Finished difference Result 630 states and 1768 transitions. [2020-04-18 19:37:26,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-04-18 19:37:26,698 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47 [2020-04-18 19:37:26,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:37:26,699 INFO L225 Difference]: With dead ends: 630 [2020-04-18 19:37:26,699 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:37:26,701 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1560 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=594, Invalid=4098, Unknown=0, NotChecked=0, Total=4692 [2020-04-18 19:37:26,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:37:26,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:37:26,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:37:26,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:37:26,702 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2020-04-18 19:37:26,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:37:26,702 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:37:26,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 19:37:26,702 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:37:26,702 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:37:26,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:37:26 BasicIcfg [2020-04-18 19:37:26,706 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:37:26,709 INFO L168 Benchmark]: Toolchain (without parser) took 15726.72 ms. Allocated memory was 136.8 MB in the beginning and 543.7 MB in the end (delta: 406.8 MB). Free memory was 100.2 MB in the beginning and 43.3 MB in the end (delta: 56.9 MB). Peak memory consumption was 463.8 MB. Max. memory is 7.1 GB. [2020-04-18 19:37:26,709 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 19:37:26,710 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.23 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 98.3 MB in the beginning and 157.0 MB in the end (delta: -58.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-04-18 19:37:26,711 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.33 ms. Allocated memory is still 200.3 MB. Free memory was 157.0 MB in the beginning and 154.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:37:26,711 INFO L168 Benchmark]: Boogie Preprocessor took 57.24 ms. Allocated memory is still 200.3 MB. Free memory was 154.9 MB in the beginning and 153.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2020-04-18 19:37:26,712 INFO L168 Benchmark]: RCFGBuilder took 516.05 ms. Allocated memory is still 200.3 MB. Free memory was 153.5 MB in the beginning and 131.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-04-18 19:37:26,712 INFO L168 Benchmark]: TraceAbstraction took 14411.36 ms. Allocated memory was 200.3 MB in the beginning and 543.7 MB in the end (delta: 343.4 MB). Free memory was 131.0 MB in the beginning and 43.3 MB in the end (delta: 87.8 MB). Peak memory consumption was 431.2 MB. Max. memory is 7.1 GB. [2020-04-18 19:37:26,715 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 660.23 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 98.3 MB in the beginning and 157.0 MB in the end (delta: -58.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.33 ms. Allocated memory is still 200.3 MB. Free memory was 157.0 MB in the beginning and 154.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.24 ms. Allocated memory is still 200.3 MB. Free memory was 154.9 MB in the beginning and 153.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 516.05 ms. Allocated memory is still 200.3 MB. Free memory was 153.5 MB in the beginning and 131.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14411.36 ms. Allocated memory was 200.3 MB in the beginning and 543.7 MB in the end (delta: 343.4 MB). Free memory was 131.0 MB in the beginning and 43.3 MB in the end (delta: 87.8 MB). Peak memory consumption was 431.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 909 SDtfs, 2329 SDslu, 4748 SDs, 0 SdLazy, 885 SolverSat, 171 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1171 GetRequests, 871 SyntacticMatches, 0 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3405 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7268occurred 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: 0.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 3814 StatesRemovedByMinimization, 2 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...