/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:44:11,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:44:11,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:44:11,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:44:11,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:44:11,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:44:11,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:44:11,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:44:11,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:44:11,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:44:11,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:44:11,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:44:11,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:44:11,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:44:11,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:44:11,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:44:11,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:44:11,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:44:11,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:44:11,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:44:11,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:44:11,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:44:11,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:44:11,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:44:11,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:44:11,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:44:11,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:44:11,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:44:11,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:44:11,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:44:11,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:44:11,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:44:11,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:44:11,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:44:11,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:44:11,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:44:11,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:44:11,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:44:11,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:44:11,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:44:11,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:44:11,644 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf [2020-04-18 15:44:11,679 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:44:11,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:44:11,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:44:11,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:44:11,680 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:44:11,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:44:11,681 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:44:11,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:44:11,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:44:11,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:44:11,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:44:11,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:44:11,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:44:11,686 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:44:11,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:44:11,687 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:44:11,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:44:11,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:44:11,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:44:11,687 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:44:11,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:44:11,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:44:11,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:44:11,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:44:11,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:44:11,689 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:44:11,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:44:11,692 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:44:11,692 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:44:11,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:44:11,693 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:44:11,985 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:44:11,996 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:44:11,999 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:44:12,001 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:44:12,002 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:44:12,002 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.opt.i [2020-04-18 15:44:12,073 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4aeb25ce8/135c6b50e9514ac397ae39d938a32a45/FLAG34b28f270 [2020-04-18 15:44:12,626 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:44:12,627 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.opt.i [2020-04-18 15:44:12,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4aeb25ce8/135c6b50e9514ac397ae39d938a32a45/FLAG34b28f270 [2020-04-18 15:44:12,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4aeb25ce8/135c6b50e9514ac397ae39d938a32a45 [2020-04-18 15:44:12,913 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:44:12,936 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:44:12,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:44:12,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:44:12,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:44:12,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:44:12" (1/1) ... [2020-04-18 15:44:12,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694972d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:12, skipping insertion in model container [2020-04-18 15:44:12,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:44:12" (1/1) ... [2020-04-18 15:44:12,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:44:12,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:44:13,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:44:13,508 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:44:13,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:44:13,648 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:44:13,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:13 WrapperNode [2020-04-18 15:44:13,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:44:13,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:44:13,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:44:13,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:44:13,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:13" (1/1) ... [2020-04-18 15:44:13,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:13" (1/1) ... [2020-04-18 15:44:13,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:44:13,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:44:13,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:44:13,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:44:13,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:13" (1/1) ... [2020-04-18 15:44:13,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:13" (1/1) ... [2020-04-18 15:44:13,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:13" (1/1) ... [2020-04-18 15:44:13,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:13" (1/1) ... [2020-04-18 15:44:13,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:13" (1/1) ... [2020-04-18 15:44:13,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:13" (1/1) ... [2020-04-18 15:44:13,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:13" (1/1) ... [2020-04-18 15:44:13,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:44:13,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:44:13,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:44:13,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:44:13,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:44:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:44:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:44:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:44:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:44:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:44:13,787 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:44:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:44:13,787 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:44:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:44:13,788 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:44:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:44:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:44:13,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:44:13,790 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 15:44:14,159 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:44:14,160 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:44:14,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:44:14 BoogieIcfgContainer [2020-04-18 15:44:14,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:44:14,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:44:14,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:44:14,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:44:14,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:44:12" (1/3) ... [2020-04-18 15:44:14,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9c283b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:44:14, skipping insertion in model container [2020-04-18 15:44:14,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:13" (2/3) ... [2020-04-18 15:44:14,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9c283b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:44:14, skipping insertion in model container [2020-04-18 15:44:14,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:44:14" (3/3) ... [2020-04-18 15:44:14,179 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_pso.opt.i [2020-04-18 15:44:14,188 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:44:14,188 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:44:14,195 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:44:14,198 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:44:14,227 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,228 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,228 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,228 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,229 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,229 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,230 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,230 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,230 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,231 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,231 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,231 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,232 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,232 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,233 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,233 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,233 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,234 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,238 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,238 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,239 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,239 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,247 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,248 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,248 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,248 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,251 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,251 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,251 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,252 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:14,268 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:44:14,289 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:44:14,290 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:44:14,290 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:44:14,290 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:44:14,290 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:44:14,290 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:44:14,291 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:44:14,291 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:44:14,308 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 15:44:14,310 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 15:44:14,355 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 15:44:14,356 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:44:14,361 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:44:14,364 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 15:44:14,386 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 15:44:14,387 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:44:14,388 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:44:14,390 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 15:44:14,391 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:44:15,808 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 15:44:16,083 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2414 [2020-04-18 15:44:16,084 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-04-18 15:44:16,088 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-04-18 15:44:16,120 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 15:44:16,123 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 15:44:16,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:44:16,133 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:44:16,134 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:44:16,135 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:44:16,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:16,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-04-18 15:44:16,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:44:16,152 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [165938466] [2020-04-18 15:44:16,174 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:16,191 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:44:16,194 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:44:16,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:44:16,196 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:44:16,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:16,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 2 times [2020-04-18 15:44:16,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:16,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812230869] [2020-04-18 15:44:16,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:16,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:16,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812230869] [2020-04-18 15:44:16,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:16,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:44:16,473 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:16,474 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:16,477 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:44:16,477 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:16,484 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:44:16,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:16,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:16,490 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 15:44:16,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:16,494 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:44:16,495 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:44:16,495 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:44:16,496 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [165938466] [2020-04-18 15:44:16,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:44:16,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:44:16,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [165938466] [2020-04-18 15:44:16,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:44:16,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:44:16,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:16,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:16,504 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 15:44:16,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:16,565 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-04-18 15:44:16,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:44:16,569 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 15:44:16,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:44:16,593 INFO L225 Difference]: With dead ends: 294 [2020-04-18 15:44:16,594 INFO L226 Difference]: Without dead ends: 230 [2020-04-18 15:44:16,595 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:16,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-04-18 15:44:16,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-04-18 15:44:16,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-04-18 15:44:16,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-04-18 15:44:16,666 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-04-18 15:44:16,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:44:16,667 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-04-18 15:44:16,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:44:16,667 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-04-18 15:44:16,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:44:16,668 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:44:16,669 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:44:16,669 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:44:16,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:16,669 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 1 times [2020-04-18 15:44:16,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:44:16,670 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1578926282] [2020-04-18 15:44:16,670 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:16,671 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 15:44:16,672 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 15:44:16,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:44:16,672 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:44:16,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:16,673 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 2 times [2020-04-18 15:44:16,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:16,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145545122] [2020-04-18 15:44:16,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:16,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:16,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145545122] [2020-04-18 15:44:16,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:16,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:44:16,770 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:16,771 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:16,772 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-04-18 15:44:16,773 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:16,785 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:44:16,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:16,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:16,786 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-04-18 15:44:16,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:16,787 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2020-04-18 15:44:16,787 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2020-04-18 15:44:16,787 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:44:16,787 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1578926282] [2020-04-18 15:44:16,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:44:16,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:44:16,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1578926282] [2020-04-18 15:44:16,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:44:16,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:44:16,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:16,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:16,790 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-04-18 15:44:16,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:16,797 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-04-18 15:44:16,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:44:16,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 15:44:16,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:44:16,800 INFO L225 Difference]: With dead ends: 202 [2020-04-18 15:44:16,800 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 15:44:16,802 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:16,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 15:44:16,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 15:44:16,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 15:44:16,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-18 15:44:16,821 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-04-18 15:44:16,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:44:16,821 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-18 15:44:16,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:44:16,821 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-18 15:44:16,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:44:16,823 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:44:16,823 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:44:16,823 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:44:16,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:16,824 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-04-18 15:44:16,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:44:16,824 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1420427784] [2020-04-18 15:44:16,825 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:16,825 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 15:44:16,826 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-04-18 15:44:16,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:44:16,827 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:44:16,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:16,828 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 2 times [2020-04-18 15:44:16,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:16,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66082928] [2020-04-18 15:44:16,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:16,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:16,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66082928] [2020-04-18 15:44:16,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:16,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:16,886 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:16,887 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:16,888 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-04-18 15:44:16,888 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:16,892 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:44:16,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:16,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:16,893 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2020-04-18 15:44:16,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:16,900 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-04-18 15:44:16,900 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-04-18 15:44:16,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:44:16,901 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:44:16,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:16,902 INFO L82 PathProgramCache]: Analyzing trace with hash -53993097, now seen corresponding path program 3 times [2020-04-18 15:44:16,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:16,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102889679] [2020-04-18 15:44:16,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:16,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:16,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102889679] [2020-04-18 15:44:16,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:16,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:16,947 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:16,948 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:16,949 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 15:44:16,950 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:16,954 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:44:16,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:16,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:44:16,955 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2020-04-18 15:44:16,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:16,959 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-04-18 15:44:16,959 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-04-18 15:44:16,959 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:44:16,959 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1420427784] [2020-04-18 15:44:16,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:44:16,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:44:16,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1420427784] [2020-04-18 15:44:16,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:44:16,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:44:16,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:44:16,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:44:16,961 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-04-18 15:44:16,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:16,985 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-04-18 15:44:16,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:44:16,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 15:44:16,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:44:16,988 INFO L225 Difference]: With dead ends: 266 [2020-04-18 15:44:16,988 INFO L226 Difference]: Without dead ends: 140 [2020-04-18 15:44:16,988 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:44:16,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-04-18 15:44:16,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-04-18 15:44:16,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-04-18 15:44:17,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-04-18 15:44:17,001 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-04-18 15:44:17,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:44:17,001 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-04-18 15:44:17,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:44:17,001 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-04-18 15:44:17,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:44:17,002 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:44:17,003 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:44:17,003 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:44:17,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:17,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-04-18 15:44:17,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:44:17,004 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [508066809] [2020-04-18 15:44:17,004 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:17,005 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 15:44:17,006 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 15:44:17,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:44:17,006 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:44:17,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:17,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1335752706, now seen corresponding path program 2 times [2020-04-18 15:44:17,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:17,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493927913] [2020-04-18 15:44:17,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:17,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:17,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493927913] [2020-04-18 15:44:17,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:17,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:17,063 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:17,065 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:17,068 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-04-18 15:44:17,068 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:17,082 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:44:17,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:17,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:17,083 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 15:44:17,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:17,090 INFO L93 Difference]: Finished difference Result 38 states and 58 transitions. [2020-04-18 15:44:17,090 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 58 transitions. [2020-04-18 15:44:17,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:44:17,092 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:44:17,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:17,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1336319106, now seen corresponding path program 3 times [2020-04-18 15:44:17,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:17,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327134827] [2020-04-18 15:44:17,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:17,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:17,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327134827] [2020-04-18 15:44:17,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:17,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:17,127 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:17,128 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:17,130 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-04-18 15:44:17,130 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:17,135 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:44:17,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:17,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:44:17,136 INFO L87 Difference]: Start difference. First operand 38 states and 58 transitions. Second operand 3 states. [2020-04-18 15:44:17,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:17,138 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-04-18 15:44:17,138 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 59 transitions. [2020-04-18 15:44:17,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:44:17,139 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:44:17,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:17,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 4 times [2020-04-18 15:44:17,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:17,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594785111] [2020-04-18 15:44:17,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:17,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:17,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594785111] [2020-04-18 15:44:17,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:17,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:17,268 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:17,270 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:17,272 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 15:44:17,272 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:17,289 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:44:17,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:44:17,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:44:17,291 INFO L87 Difference]: Start difference. First operand 41 states and 59 transitions. Second operand 4 states. [2020-04-18 15:44:17,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:17,304 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-04-18 15:44:17,304 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 59 transitions. [2020-04-18 15:44:17,305 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:44:17,305 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [508066809] [2020-04-18 15:44:17,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:44:17,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:44:17,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [508066809] [2020-04-18 15:44:17,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 15:44:17,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:44:17,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:44:17,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:44:17,308 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 6 states. [2020-04-18 15:44:17,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:17,537 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-04-18 15:44:17,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 15:44:17,540 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-04-18 15:44:17,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:44:17,543 INFO L225 Difference]: With dead ends: 165 [2020-04-18 15:44:17,544 INFO L226 Difference]: Without dead ends: 113 [2020-04-18 15:44:17,544 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:44:17,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-04-18 15:44:17,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-04-18 15:44:17,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-04-18 15:44:17,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-04-18 15:44:17,560 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-04-18 15:44:17,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:44:17,561 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-04-18 15:44:17,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 15:44:17,561 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-04-18 15:44:17,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:44:17,562 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:44:17,562 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:44:17,566 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:44:17,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:17,567 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-04-18 15:44:17,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:44:17,567 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1949414017] [2020-04-18 15:44:17,568 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:17,568 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 60 transitions. [2020-04-18 15:44:17,572 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-04-18 15:44:17,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:44:17,573 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:44:17,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:17,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1541327102, now seen corresponding path program 2 times [2020-04-18 15:44:17,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:17,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656422863] [2020-04-18 15:44:17,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:17,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:17,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656422863] [2020-04-18 15:44:17,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:17,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:17,630 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:17,632 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:17,634 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 26 transitions. [2020-04-18 15:44:17,634 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:17,638 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:44:17,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:17,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:17,639 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-04-18 15:44:17,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:17,646 INFO L93 Difference]: Finished difference Result 49 states and 79 transitions. [2020-04-18 15:44:17,646 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 79 transitions. [2020-04-18 15:44:17,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:44:17,647 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:44:17,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:17,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1523780462, now seen corresponding path program 3 times [2020-04-18 15:44:17,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:17,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096853376] [2020-04-18 15:44:17,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:17,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:17,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096853376] [2020-04-18 15:44:17,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:17,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:17,678 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:17,679 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:17,682 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-04-18 15:44:17,682 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:17,696 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:44:17,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:17,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:44:17,697 INFO L87 Difference]: Start difference. First operand 49 states and 79 transitions. Second operand 3 states. [2020-04-18 15:44:17,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:17,701 INFO L93 Difference]: Finished difference Result 55 states and 84 transitions. [2020-04-18 15:44:17,701 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 84 transitions. [2020-04-18 15:44:17,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:44:17,702 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:44:17,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:17,702 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 4 times [2020-04-18 15:44:17,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:17,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086076141] [2020-04-18 15:44:17,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:17,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:17,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086076141] [2020-04-18 15:44:17,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:17,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:44:17,759 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:17,760 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:17,764 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-04-18 15:44:17,764 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:17,838 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:44:17,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:44:17,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:44:17,839 INFO L87 Difference]: Start difference. First operand 55 states and 84 transitions. Second operand 5 states. [2020-04-18 15:44:17,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:17,920 INFO L93 Difference]: Finished difference Result 55 states and 84 transitions. [2020-04-18 15:44:17,920 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 84 transitions. [2020-04-18 15:44:17,920 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:44:17,921 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1949414017] [2020-04-18 15:44:17,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:44:17,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:44:17,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1949414017] [2020-04-18 15:44:17,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:44:17,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:44:17,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:44:17,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:44:17,923 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 7 states. [2020-04-18 15:44:18,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:18,257 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-04-18 15:44:18,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 15:44:18,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-04-18 15:44:18,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:44:18,258 INFO L225 Difference]: With dead ends: 111 [2020-04-18 15:44:18,258 INFO L226 Difference]: Without dead ends: 80 [2020-04-18 15:44:18,259 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-04-18 15:44:18,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-04-18 15:44:18,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-04-18 15:44:18,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-04-18 15:44:18,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-04-18 15:44:18,264 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-04-18 15:44:18,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:44:18,264 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-04-18 15:44:18,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:44:18,264 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-04-18 15:44:18,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:44:18,265 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:44:18,265 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:44:18,265 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:44:18,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:18,266 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-04-18 15:44:18,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:44:18,266 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [973642660] [2020-04-18 15:44:18,267 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:18,268 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 134 transitions. [2020-04-18 15:44:18,269 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-04-18 15:44:18,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:44:18,270 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:44:18,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:18,270 INFO L82 PathProgramCache]: Analyzing trace with hash -605969466, now seen corresponding path program 2 times [2020-04-18 15:44:18,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:18,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116869636] [2020-04-18 15:44:18,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:18,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:18,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116869636] [2020-04-18 15:44:18,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:18,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:18,298 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:18,299 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:18,302 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 48 transitions. [2020-04-18 15:44:18,302 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:18,307 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:44:18,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:18,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:18,308 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 3 states. [2020-04-18 15:44:18,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:18,314 INFO L93 Difference]: Finished difference Result 105 states and 205 transitions. [2020-04-18 15:44:18,315 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 205 transitions. [2020-04-18 15:44:18,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:44:18,315 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:44:18,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:18,316 INFO L82 PathProgramCache]: Analyzing trace with hash -588422826, now seen corresponding path program 3 times [2020-04-18 15:44:18,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:18,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523644337] [2020-04-18 15:44:18,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:18,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523644337] [2020-04-18 15:44:18,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:18,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:18,343 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:18,344 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:18,347 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 39 transitions. [2020-04-18 15:44:18,347 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:18,352 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:44:18,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:18,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:44:18,353 INFO L87 Difference]: Start difference. First operand 105 states and 205 transitions. Second operand 3 states. [2020-04-18 15:44:18,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:18,370 INFO L93 Difference]: Finished difference Result 119 states and 222 transitions. [2020-04-18 15:44:18,371 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 222 transitions. [2020-04-18 15:44:18,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:44:18,371 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:44:18,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:18,372 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 4 times [2020-04-18 15:44:18,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:18,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025339749] [2020-04-18 15:44:18,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:18,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:18,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025339749] [2020-04-18 15:44:18,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:18,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:44:18,436 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:18,437 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:18,440 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-04-18 15:44:18,440 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:18,473 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:44:18,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:44:18,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:44:18,474 INFO L87 Difference]: Start difference. First operand 119 states and 222 transitions. Second operand 6 states. [2020-04-18 15:44:18,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:18,532 INFO L93 Difference]: Finished difference Result 119 states and 222 transitions. [2020-04-18 15:44:18,532 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 222 transitions. [2020-04-18 15:44:18,533 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:44:18,533 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [973642660] [2020-04-18 15:44:18,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:44:18,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:44:18,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [973642660] [2020-04-18 15:44:18,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 15:44:18,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:44:18,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:44:18,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:44:18,535 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 8 states. [2020-04-18 15:44:18,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:18,726 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-04-18 15:44:18,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 15:44:18,727 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-04-18 15:44:18,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:44:18,728 INFO L225 Difference]: With dead ends: 75 [2020-04-18 15:44:18,728 INFO L226 Difference]: Without dead ends: 66 [2020-04-18 15:44:18,728 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-04-18 15:44:18,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-04-18 15:44:18,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-04-18 15:44:18,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-04-18 15:44:18,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-04-18 15:44:18,732 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-04-18 15:44:18,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:44:18,739 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-04-18 15:44:18,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 15:44:18,739 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-04-18 15:44:18,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:44:18,740 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:44:18,740 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:44:18,740 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:44:18,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:18,741 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-04-18 15:44:18,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:44:18,741 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [952354443] [2020-04-18 15:44:18,743 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:18,750 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 15:44:18,755 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 15:44:18,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:44:18,756 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:44:18,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:18,757 INFO L82 PathProgramCache]: Analyzing trace with hash -689704600, now seen corresponding path program 2 times [2020-04-18 15:44:18,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:18,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258089421] [2020-04-18 15:44:18,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:18,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258089421] [2020-04-18 15:44:18,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:18,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:18,798 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:18,799 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:18,809 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 90 transitions. [2020-04-18 15:44:18,809 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:18,818 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:44:18,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:18,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:18,819 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 15:44:18,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:18,832 INFO L93 Difference]: Finished difference Result 390 states and 1057 transitions. [2020-04-18 15:44:18,832 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1057 transitions. [2020-04-18 15:44:18,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:44:18,833 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:44:18,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:18,834 INFO L82 PathProgramCache]: Analyzing trace with hash 595608656, now seen corresponding path program 3 times [2020-04-18 15:44:18,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:18,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894444272] [2020-04-18 15:44:18,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:18,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:18,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894444272] [2020-04-18 15:44:18,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:18,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:18,869 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:18,871 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:18,875 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 76 transitions. [2020-04-18 15:44:18,876 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:18,885 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:44:18,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:18,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:44:18,885 INFO L87 Difference]: Start difference. First operand 390 states and 1057 transitions. Second operand 3 states. [2020-04-18 15:44:18,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:18,893 INFO L93 Difference]: Finished difference Result 446 states and 1167 transitions. [2020-04-18 15:44:18,893 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1167 transitions. [2020-04-18 15:44:18,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:44:18,895 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:44:18,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:18,895 INFO L82 PathProgramCache]: Analyzing trace with hash -901910694, now seen corresponding path program 4 times [2020-04-18 15:44:18,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:18,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925094737] [2020-04-18 15:44:18,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:18,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:18,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925094737] [2020-04-18 15:44:18,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:18,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:44:18,933 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:18,936 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:18,941 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 63 transitions. [2020-04-18 15:44:18,941 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:18,962 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:44:18,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:44:18,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:44:18,963 INFO L87 Difference]: Start difference. First operand 446 states and 1167 transitions. Second operand 4 states. [2020-04-18 15:44:18,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:18,987 INFO L93 Difference]: Finished difference Result 638 states and 1577 transitions. [2020-04-18 15:44:18,987 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1577 transitions. [2020-04-18 15:44:18,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:44:18,989 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:44:18,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:18,989 INFO L82 PathProgramCache]: Analyzing trace with hash -901846014, now seen corresponding path program 5 times [2020-04-18 15:44:18,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:18,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986858397] [2020-04-18 15:44:18,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:19,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:19,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986858397] [2020-04-18 15:44:19,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:19,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:44:19,040 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:19,042 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:19,050 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 52 transitions. [2020-04-18 15:44:19,050 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:19,086 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:44:19,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:44:19,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:44:19,087 INFO L87 Difference]: Start difference. First operand 638 states and 1577 transitions. Second operand 6 states. [2020-04-18 15:44:19,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:19,193 INFO L93 Difference]: Finished difference Result 644 states and 1580 transitions. [2020-04-18 15:44:19,193 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1580 transitions. [2020-04-18 15:44:19,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:44:19,195 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:44:19,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:19,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 6 times [2020-04-18 15:44:19,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:19,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079388035] [2020-04-18 15:44:19,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:19,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:19,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079388035] [2020-04-18 15:44:19,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:19,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:44:19,229 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:19,230 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:19,241 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 57 transitions. [2020-04-18 15:44:19,241 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:19,256 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:44:19,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:44:19,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:44:19,257 INFO L87 Difference]: Start difference. First operand 644 states and 1580 transitions. Second operand 4 states. [2020-04-18 15:44:19,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:19,285 INFO L93 Difference]: Finished difference Result 803 states and 1956 transitions. [2020-04-18 15:44:19,285 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1956 transitions. [2020-04-18 15:44:19,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:44:19,287 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:44:19,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:19,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1323635892, now seen corresponding path program 7 times [2020-04-18 15:44:19,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:19,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815376804] [2020-04-18 15:44:19,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:19,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:19,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815376804] [2020-04-18 15:44:19,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:19,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:44:19,358 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:19,359 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:19,363 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 39 transitions. [2020-04-18 15:44:19,363 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:19,453 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:44:19,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:44:19,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-04-18 15:44:19,454 INFO L87 Difference]: Start difference. First operand 803 states and 1956 transitions. Second operand 5 states. [2020-04-18 15:44:19,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:19,484 INFO L93 Difference]: Finished difference Result 1276 states and 2891 transitions. [2020-04-18 15:44:19,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 2891 transitions. [2020-04-18 15:44:19,488 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:44:19,488 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [952354443] [2020-04-18 15:44:19,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:44:19,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:44:19,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [952354443] [2020-04-18 15:44:19,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 15:44:19,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:44:19,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 15:44:19,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2020-04-18 15:44:19,491 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 14 states. [2020-04-18 15:44:20,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:20,886 INFO L93 Difference]: Finished difference Result 128 states and 245 transitions. [2020-04-18 15:44:20,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-04-18 15:44:20,887 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-04-18 15:44:20,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:44:20,887 INFO L225 Difference]: With dead ends: 128 [2020-04-18 15:44:20,887 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:44:20,889 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2005 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=990, Invalid=5016, Unknown=0, NotChecked=0, Total=6006 [2020-04-18 15:44:20,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:44:20,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:44:20,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:44:20,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:44:20,890 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 15:44:20,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:44:20,891 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:44:20,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 15:44:20,891 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:44:20,891 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:44:20,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:44:20 BasicIcfg [2020-04-18 15:44:20,895 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:44:20,903 INFO L168 Benchmark]: Toolchain (without parser) took 7982.72 ms. Allocated memory was 145.2 MB in the beginning and 304.6 MB in the end (delta: 159.4 MB). Free memory was 102.1 MB in the beginning and 209.2 MB in the end (delta: -107.1 MB). Peak memory consumption was 52.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:44:20,906 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 15:44:20,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 712.73 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 100.1 MB in the beginning and 157.6 MB in the end (delta: -57.4 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-04-18 15:44:20,909 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.87 ms. Allocated memory is still 202.9 MB. Free memory was 157.6 MB in the beginning and 155.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:44:20,909 INFO L168 Benchmark]: Boogie Preprocessor took 26.38 ms. Allocated memory is still 202.9 MB. Free memory was 155.5 MB in the beginning and 154.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 15:44:20,910 INFO L168 Benchmark]: RCFGBuilder took 443.35 ms. Allocated memory is still 202.9 MB. Free memory was 154.2 MB in the beginning and 131.7 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-04-18 15:44:20,910 INFO L168 Benchmark]: TraceAbstraction took 6724.50 ms. Allocated memory was 202.9 MB in the beginning and 304.6 MB in the end (delta: 101.7 MB). Free memory was 131.7 MB in the beginning and 209.2 MB in the end (delta: -77.5 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-04-18 15:44:20,918 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 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 712.73 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 100.1 MB in the beginning and 157.6 MB in the end (delta: -57.4 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.87 ms. Allocated memory is still 202.9 MB. Free memory was 157.6 MB in the beginning and 155.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.38 ms. Allocated memory is still 202.9 MB. Free memory was 155.5 MB in the beginning and 154.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 443.35 ms. Allocated memory is still 202.9 MB. Free memory was 154.2 MB in the beginning and 131.7 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6724.50 ms. Allocated memory was 202.9 MB in the beginning and 304.6 MB in the end (delta: 101.7 MB). Free memory was 131.7 MB in the beginning and 209.2 MB in the end (delta: -77.5 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 626 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2414 CheckedPairsTotal, 56 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.6s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 134 SDtfs, 241 SDslu, 313 SDs, 0 SdLazy, 593 SolverSat, 158 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 411 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2196 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...