/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:20:27,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:20:27,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:20:27,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:20:27,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:20:27,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:20:27,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:20:27,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:20:27,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:20:27,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:20:27,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:20:27,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:20:27,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:20:27,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:20:27,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:20:27,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:20:27,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:20:27,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:20:27,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:20:27,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:20:27,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:20:27,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:20:27,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:20:27,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:20:27,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:20:27,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:20:27,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:20:27,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:20:27,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:20:27,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:20:27,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:20:27,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:20:27,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:20:27,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:20:27,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:20:27,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:20:27,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:20:27,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:20:27,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:20:27,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:20:27,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:20:27,716 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 11:20:27,737 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:20:27,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:20:27,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:20:27,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:20:27,739 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:20:27,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:20:27,740 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:20:27,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:20:27,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:20:27,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:20:27,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:20:27,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:20:27,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:20:27,741 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:20:27,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:20:27,742 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:20:27,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:20:27,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:20:27,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:20:27,742 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:20:27,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:20:27,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:20:27,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:20:27,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:20:27,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:20:27,744 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:20:27,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:20:27,744 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:20:27,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:20:27,744 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:20:27,999 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:20:28,011 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:20:28,014 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:20:28,016 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:20:28,016 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:20:28,017 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i [2020-04-18 11:20:28,082 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eea0f324f/e6822d8fe34d48acba97dcf56f11cb74/FLAGfceaf7cdd [2020-04-18 11:20:28,590 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:20:28,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i [2020-04-18 11:20:28,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eea0f324f/e6822d8fe34d48acba97dcf56f11cb74/FLAGfceaf7cdd [2020-04-18 11:20:28,917 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eea0f324f/e6822d8fe34d48acba97dcf56f11cb74 [2020-04-18 11:20:28,925 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:20:28,941 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:20:28,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:20:28,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:20:28,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:20:28,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:20:28" (1/1) ... [2020-04-18 11:20:28,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62bfdcf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:20:28, skipping insertion in model container [2020-04-18 11:20:28,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:20:28" (1/1) ... [2020-04-18 11:20:28,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:20:29,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:20:29,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:20:29,431 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:20:29,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:20:29,669 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:20:29,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:20:29 WrapperNode [2020-04-18 11:20:29,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:20:29,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:20:29,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:20:29,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:20:29,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:20:29" (1/1) ... [2020-04-18 11:20:29,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:20:29" (1/1) ... [2020-04-18 11:20:29,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:20:29,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:20:29,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:20:29,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:20:29,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:20:29" (1/1) ... [2020-04-18 11:20:29,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:20:29" (1/1) ... [2020-04-18 11:20:29,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:20:29" (1/1) ... [2020-04-18 11:20:29,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:20:29" (1/1) ... [2020-04-18 11:20:29,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:20:29" (1/1) ... [2020-04-18 11:20:29,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:20:29" (1/1) ... [2020-04-18 11:20:29,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:20:29" (1/1) ... [2020-04-18 11:20:29,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:20:29,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:20:29,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:20:29,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:20:29,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:20:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:20:29,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:20:29,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:20:29,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:20:29,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:20:29,836 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:20:29,837 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:20:29,837 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:20:29,837 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:20:29,837 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:20:29,837 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:20:29,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:20:29,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:20:29,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:20:29,840 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 11:20:30,254 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:20:30,254 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:20:30,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:20:30 BoogieIcfgContainer [2020-04-18 11:20:30,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:20:30,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:20:30,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:20:30,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:20:30,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:20:28" (1/3) ... [2020-04-18 11:20:30,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484ea169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:20:30, skipping insertion in model container [2020-04-18 11:20:30,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:20:29" (2/3) ... [2020-04-18 11:20:30,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484ea169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:20:30, skipping insertion in model container [2020-04-18 11:20:30,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:20:30" (3/3) ... [2020-04-18 11:20:30,267 INFO L109 eAbstractionObserver]: Analyzing ICFG safe031_tso.opt.i [2020-04-18 11:20:30,277 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:20:30,278 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:20:30,285 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:20:30,286 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:20:30,312 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,312 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,313 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,313 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,314 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,314 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,314 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,315 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,315 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,315 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,316 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,316 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,316 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,317 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,317 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,317 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,318 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,318 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,322 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,322 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,323 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,323 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,334 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,334 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,335 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,335 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,345 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,345 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,345 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,346 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:20:30,365 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 11:20:30,386 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:20:30,386 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:20:30,386 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:20:30,387 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:20:30,387 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:20:30,387 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:20:30,387 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:20:30,387 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:20:30,404 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 11:20:30,408 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 11:20:30,459 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 11:20:30,459 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:20:30,465 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 11:20:30,468 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 11:20:30,499 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 11:20:30,500 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:20:30,501 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 11:20:30,503 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 11:20:30,504 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:20:32,455 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2238 [2020-04-18 11:20:32,456 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-04-18 11:20:32,459 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-04-18 11:20:32,482 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 11:20:32,484 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 11:20:32,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:20:32,492 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:20:32,493 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:20:32,493 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:20:32,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:20:32,499 INFO L82 PathProgramCache]: Analyzing trace with hash -389059823, now seen corresponding path program 1 times [2020-04-18 11:20:32,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:20:32,507 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1434350110] [2020-04-18 11:20:32,523 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:20:32,535 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:20:32,536 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 11:20:32,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:20:32,537 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:20:32,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:20:32,538 INFO L82 PathProgramCache]: Analyzing trace with hash -389059823, now seen corresponding path program 2 times [2020-04-18 11:20:32,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:20:32,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005031488] [2020-04-18 11:20:32,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:20:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:20:32,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:20:32,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005031488] [2020-04-18 11:20:32,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:20:32,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:20:32,753 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:20:32,754 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:20:32,757 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:20:32,757 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:20:32,775 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:20:32,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:20:32,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:20:32,781 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 11:20:32,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:20:32,785 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 11:20:32,785 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 11:20:32,786 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:20:32,787 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1434350110] [2020-04-18 11:20:32,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:20:32,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:20:32,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1434350110] [2020-04-18 11:20:32,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:20:32,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:20:32,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:20:32,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:20:32,794 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 11:20:32,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:20:32,830 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-04-18 11:20:32,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:20:32,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 11:20:32,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:20:32,859 INFO L225 Difference]: With dead ends: 290 [2020-04-18 11:20:32,860 INFO L226 Difference]: Without dead ends: 226 [2020-04-18 11:20:32,869 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 11:20:32,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-04-18 11:20:32,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-04-18 11:20:32,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-04-18 11:20:32,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-04-18 11:20:32,947 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-04-18 11:20:32,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:20:32,949 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-04-18 11:20:32,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:20:32,949 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-04-18 11:20:32,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:20:32,951 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:20:32,951 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:20:32,951 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:20:32,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:20:32,952 INFO L82 PathProgramCache]: Analyzing trace with hash 824029864, now seen corresponding path program 1 times [2020-04-18 11:20:32,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:20:32,952 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1746352455] [2020-04-18 11:20:32,953 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:20:32,953 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-04-18 11:20:32,954 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 11:20:32,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:20:32,955 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:20:32,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:20:32,955 INFO L82 PathProgramCache]: Analyzing trace with hash 824029864, now seen corresponding path program 2 times [2020-04-18 11:20:32,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:20:32,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088892323] [2020-04-18 11:20:32,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:20:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:20:33,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:20:33,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088892323] [2020-04-18 11:20:33,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:20:33,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:20:33,071 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:20:33,072 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:20:33,073 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 11:20:33,073 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:20:33,077 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:20:33,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:20:33,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:20:33,078 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 11:20:33,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:20:33,079 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-04-18 11:20:33,079 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-04-18 11:20:33,079 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:20:33,079 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1746352455] [2020-04-18 11:20:33,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:20:33,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:20:33,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1746352455] [2020-04-18 11:20:33,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:20:33,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:20:33,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:20:33,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:20:33,081 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-04-18 11:20:33,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:20:33,103 INFO L93 Difference]: Finished difference Result 220 states and 604 transitions. [2020-04-18 11:20:33,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:20:33,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 11:20:33,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:20:33,106 INFO L225 Difference]: With dead ends: 220 [2020-04-18 11:20:33,106 INFO L226 Difference]: Without dead ends: 220 [2020-04-18 11:20:33,108 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 11:20:33,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-04-18 11:20:33,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-04-18 11:20:33,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-04-18 11:20:33,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 604 transitions. [2020-04-18 11:20:33,126 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 604 transitions. Word has length 9 [2020-04-18 11:20:33,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:20:33,126 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 604 transitions. [2020-04-18 11:20:33,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:20:33,126 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 604 transitions. [2020-04-18 11:20:33,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:20:33,127 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:20:33,128 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:20:33,128 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:20:33,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:20:33,128 INFO L82 PathProgramCache]: Analyzing trace with hash -224925294, now seen corresponding path program 1 times [2020-04-18 11:20:33,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:20:33,129 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [133523401] [2020-04-18 11:20:33,129 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:20:33,130 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 34 transitions. [2020-04-18 11:20:33,130 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-04-18 11:20:33,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:20:33,131 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:20:33,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:20:33,131 INFO L82 PathProgramCache]: Analyzing trace with hash -224925294, now seen corresponding path program 2 times [2020-04-18 11:20:33,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:20:33,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664977142] [2020-04-18 11:20:33,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:20:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:20:33,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:20:33,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664977142] [2020-04-18 11:20:33,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:20:33,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:20:33,233 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:20:33,234 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:20:33,236 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-04-18 11:20:33,236 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:20:33,245 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:20:33,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:20:33,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:20:33,246 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2020-04-18 11:20:33,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:20:33,255 INFO L93 Difference]: Finished difference Result 22 states and 34 transitions. [2020-04-18 11:20:33,255 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 34 transitions. [2020-04-18 11:20:33,255 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:20:33,256 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [133523401] [2020-04-18 11:20:33,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:20:33,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:20:33,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [133523401] [2020-04-18 11:20:33,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:20:33,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:20:33,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:20:33,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:20:33,258 INFO L87 Difference]: Start difference. First operand 220 states and 604 transitions. Second operand 4 states. [2020-04-18 11:20:33,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:20:33,297 INFO L93 Difference]: Finished difference Result 240 states and 599 transitions. [2020-04-18 11:20:33,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 11:20:33,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 11:20:33,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:20:33,299 INFO L225 Difference]: With dead ends: 240 [2020-04-18 11:20:33,300 INFO L226 Difference]: Without dead ends: 176 [2020-04-18 11:20:33,300 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:20:33,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-04-18 11:20:33,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2020-04-18 11:20:33,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-04-18 11:20:33,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 428 transitions. [2020-04-18 11:20:33,325 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 428 transitions. Word has length 10 [2020-04-18 11:20:33,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:20:33,326 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 428 transitions. [2020-04-18 11:20:33,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:20:33,326 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 428 transitions. [2020-04-18 11:20:33,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:20:33,327 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:20:33,327 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:20:33,328 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:20:33,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:20:33,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1617246421, now seen corresponding path program 1 times [2020-04-18 11:20:33,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:20:33,329 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1348384998] [2020-04-18 11:20:33,329 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:20:33,330 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 11:20:33,330 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-04-18 11:20:33,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:20:33,330 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:20:33,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:20:33,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1617246421, now seen corresponding path program 2 times [2020-04-18 11:20:33,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:20:33,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285989929] [2020-04-18 11:20:33,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:20:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:20:33,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:20:33,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285989929] [2020-04-18 11:20:33,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:20:33,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:20:33,379 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:20:33,380 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:20:33,381 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 11:20:33,381 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:20:33,384 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:20:33,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:20:33,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:20:33,385 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2020-04-18 11:20:33,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:20:33,388 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2020-04-18 11:20:33,389 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2020-04-18 11:20:33,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:20:33,389 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:20:33,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:20:33,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1618721941, now seen corresponding path program 3 times [2020-04-18 11:20:33,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:20:33,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337109696] [2020-04-18 11:20:33,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:20:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:20:33,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:20:33,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337109696] [2020-04-18 11:20:33,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:20:33,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:20:33,419 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:20:33,420 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:20:33,421 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 13 transitions. [2020-04-18 11:20:33,421 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:20:33,426 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:20:33,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:20:33,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:20:33,426 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 3 states. [2020-04-18 11:20:33,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:20:33,429 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2020-04-18 11:20:33,429 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2020-04-18 11:20:33,429 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:20:33,430 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1348384998] [2020-04-18 11:20:33,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:20:33,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:20:33,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1348384998] [2020-04-18 11:20:33,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:20:33,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:20:33,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:20:33,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:20:33,432 INFO L87 Difference]: Start difference. First operand 176 states and 428 transitions. Second operand 4 states. [2020-04-18 11:20:33,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:20:33,444 INFO L93 Difference]: Finished difference Result 225 states and 522 transitions. [2020-04-18 11:20:33,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:20:33,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 11:20:33,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:20:33,446 INFO L225 Difference]: With dead ends: 225 [2020-04-18 11:20:33,446 INFO L226 Difference]: Without dead ends: 183 [2020-04-18 11:20:33,447 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 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 11:20:33,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-04-18 11:20:33,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2020-04-18 11:20:33,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-04-18 11:20:33,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 396 transitions. [2020-04-18 11:20:33,455 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 396 transitions. Word has length 11 [2020-04-18 11:20:33,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:20:33,456 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 396 transitions. [2020-04-18 11:20:33,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:20:33,456 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 396 transitions. [2020-04-18 11:20:33,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:20:33,457 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:20:33,457 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:20:33,457 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:20:33,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:20:33,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1444727206, now seen corresponding path program 1 times [2020-04-18 11:20:33,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:20:33,458 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1539079527] [2020-04-18 11:20:33,459 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:20:33,460 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 76 transitions. [2020-04-18 11:20:33,460 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-04-18 11:20:33,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:20:33,461 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:20:33,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:20:33,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1444727206, now seen corresponding path program 2 times [2020-04-18 11:20:33,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:20:33,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33453223] [2020-04-18 11:20:33,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:20:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:20:33,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:20:33,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33453223] [2020-04-18 11:20:33,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:20:33,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:20:33,536 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:20:33,537 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:20:33,540 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 44 transitions. [2020-04-18 11:20:33,540 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:20:33,635 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:20:33,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:20:33,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:20:33,636 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 7 states. [2020-04-18 11:20:33,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:20:33,669 INFO L93 Difference]: Finished difference Result 42 states and 76 transitions. [2020-04-18 11:20:33,670 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 76 transitions. [2020-04-18 11:20:33,670 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:20:33,671 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1539079527] [2020-04-18 11:20:33,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:20:33,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:20:33,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1539079527] [2020-04-18 11:20:33,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 11:20:33,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:20:33,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:20:33,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:20:33,673 INFO L87 Difference]: Start difference. First operand 171 states and 396 transitions. Second operand 7 states. [2020-04-18 11:20:33,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:20:33,729 INFO L93 Difference]: Finished difference Result 162 states and 347 transitions. [2020-04-18 11:20:33,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:20:33,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-04-18 11:20:33,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:20:33,731 INFO L225 Difference]: With dead ends: 162 [2020-04-18 11:20:33,731 INFO L226 Difference]: Without dead ends: 125 [2020-04-18 11:20:33,732 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:20:33,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-04-18 11:20:33,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-04-18 11:20:33,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-04-18 11:20:33,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 263 transitions. [2020-04-18 11:20:33,737 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 263 transitions. Word has length 12 [2020-04-18 11:20:33,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:20:33,737 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 263 transitions. [2020-04-18 11:20:33,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 11:20:33,738 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 263 transitions. [2020-04-18 11:20:33,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:20:33,738 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:20:33,739 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:20:33,739 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:20:33,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:20:33,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1109140729, now seen corresponding path program 1 times [2020-04-18 11:20:33,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:20:33,740 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [487775116] [2020-04-18 11:20:33,740 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:20:33,743 INFO L259 McrAutomatonBuilder]: Finished intersection with 90 states and 200 transitions. [2020-04-18 11:20:33,744 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-04-18 11:20:33,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:20:33,745 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:20:33,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:20:33,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1109140729, now seen corresponding path program 2 times [2020-04-18 11:20:33,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:20:33,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412527408] [2020-04-18 11:20:33,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:20:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:20:33,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:20:33,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412527408] [2020-04-18 11:20:33,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:20:33,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:20:33,778 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:20:33,780 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:20:33,784 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 66 transitions. [2020-04-18 11:20:33,785 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:20:33,802 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:20:33,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:20:33,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:20:33,803 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 4 states. [2020-04-18 11:20:33,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:20:33,814 INFO L93 Difference]: Finished difference Result 98 states and 210 transitions. [2020-04-18 11:20:33,814 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 210 transitions. [2020-04-18 11:20:33,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:20:33,815 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:20:33,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:20:33,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1107479929, now seen corresponding path program 3 times [2020-04-18 11:20:33,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:20:33,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597910267] [2020-04-18 11:20:33,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:20:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:20:33,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:20:33,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597910267] [2020-04-18 11:20:33,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:20:33,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:20:33,877 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:20:33,878 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:20:33,881 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 54 transitions. [2020-04-18 11:20:33,882 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:20:33,887 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:20:33,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:20:33,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:20:33,888 INFO L87 Difference]: Start difference. First operand 98 states and 210 transitions. Second operand 3 states. [2020-04-18 11:20:33,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:20:33,891 INFO L93 Difference]: Finished difference Result 98 states and 210 transitions. [2020-04-18 11:20:33,891 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 210 transitions. [2020-04-18 11:20:33,891 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:20:33,892 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [487775116] [2020-04-18 11:20:33,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:20:33,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:20:33,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [487775116] [2020-04-18 11:20:33,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:20:33,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:20:33,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:20:33,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:20:33,893 INFO L87 Difference]: Start difference. First operand 125 states and 263 transitions. Second operand 5 states. [2020-04-18 11:20:33,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:20:33,912 INFO L93 Difference]: Finished difference Result 157 states and 314 transitions. [2020-04-18 11:20:33,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:20:33,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 11:20:33,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:20:33,914 INFO L225 Difference]: With dead ends: 157 [2020-04-18 11:20:33,914 INFO L226 Difference]: Without dead ends: 120 [2020-04-18 11:20:33,915 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:20:33,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-04-18 11:20:33,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-04-18 11:20:33,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-04-18 11:20:33,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 233 transitions. [2020-04-18 11:20:33,919 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 233 transitions. Word has length 14 [2020-04-18 11:20:33,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:20:33,920 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 233 transitions. [2020-04-18 11:20:33,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:20:33,920 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 233 transitions. [2020-04-18 11:20:33,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:20:33,921 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:20:33,921 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:20:33,921 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:20:33,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:20:33,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1574578981, now seen corresponding path program 1 times [2020-04-18 11:20:33,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:20:33,922 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2001516361] [2020-04-18 11:20:33,923 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:20:33,924 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 134 transitions. [2020-04-18 11:20:33,925 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-04-18 11:20:33,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:20:33,926 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:20:33,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:20:33,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1109878777, now seen corresponding path program 2 times [2020-04-18 11:20:33,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:20:33,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181177017] [2020-04-18 11:20:33,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:20:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:20:33,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:20:33,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181177017] [2020-04-18 11:20:33,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:20:33,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:20:33,960 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:20:33,961 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:20:33,964 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 49 transitions. [2020-04-18 11:20:33,964 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:20:33,969 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:20:33,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:20:33,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:20:33,970 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 3 states. [2020-04-18 11:20:33,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:20:33,977 INFO L93 Difference]: Finished difference Result 92 states and 177 transitions. [2020-04-18 11:20:33,978 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 177 transitions. [2020-04-18 11:20:33,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:20:33,978 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:20:33,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:20:33,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1108403257, now seen corresponding path program 3 times [2020-04-18 11:20:33,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:20:33,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541683091] [2020-04-18 11:20:33,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:20:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:20:34,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:20:34,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541683091] [2020-04-18 11:20:34,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:20:34,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:20:34,037 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:20:34,038 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:20:34,043 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 54 transitions. [2020-04-18 11:20:34,043 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:20:34,142 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:20:34,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:20:34,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:20:34,143 INFO L87 Difference]: Start difference. First operand 92 states and 177 transitions. Second operand 7 states. [2020-04-18 11:20:34,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:20:34,213 INFO L93 Difference]: Finished difference Result 96 states and 179 transitions. [2020-04-18 11:20:34,214 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 179 transitions. [2020-04-18 11:20:34,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:20:34,214 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:20:34,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:20:34,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1574578981, now seen corresponding path program 4 times [2020-04-18 11:20:34,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:20:34,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015056443] [2020-04-18 11:20:34,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:20:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:20:34,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:20:34,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015056443] [2020-04-18 11:20:34,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:20:34,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:20:34,302 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:20:34,304 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:20:34,309 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 40 transitions. [2020-04-18 11:20:34,309 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:20:34,328 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:20:34,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:20:34,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:20:34,328 INFO L87 Difference]: Start difference. First operand 96 states and 179 transitions. Second operand 6 states. [2020-04-18 11:20:34,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:20:34,397 INFO L93 Difference]: Finished difference Result 96 states and 179 transitions. [2020-04-18 11:20:34,397 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 179 transitions. [2020-04-18 11:20:34,397 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:20:34,398 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2001516361] [2020-04-18 11:20:34,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:20:34,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:20:34,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2001516361] [2020-04-18 11:20:34,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 11:20:34,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:20:34,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:20:34,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:20:34,400 INFO L87 Difference]: Start difference. First operand 118 states and 233 transitions. Second operand 9 states. [2020-04-18 11:20:34,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:20:34,567 INFO L93 Difference]: Finished difference Result 112 states and 219 transitions. [2020-04-18 11:20:34,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 11:20:34,568 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-04-18 11:20:34,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:20:34,569 INFO L225 Difference]: With dead ends: 112 [2020-04-18 11:20:34,569 INFO L226 Difference]: Without dead ends: 36 [2020-04-18 11:20:34,569 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-04-18 11:20:34,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-18 11:20:34,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-18 11:20:34,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-18 11:20:34,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-18 11:20:34,571 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 14 [2020-04-18 11:20:34,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:20:34,572 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-18 11:20:34,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 11:20:34,572 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-18 11:20:34,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:20:34,572 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:20:34,572 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:20:34,573 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:20:34,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:20:34,573 INFO L82 PathProgramCache]: Analyzing trace with hash 16794271, now seen corresponding path program 1 times [2020-04-18 11:20:34,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:20:34,574 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [141118374] [2020-04-18 11:20:34,574 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:20:34,579 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 11:20:34,581 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 11:20:34,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:20:34,583 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:20:34,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:20:34,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1757961441, now seen corresponding path program 2 times [2020-04-18 11:20:34,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:20:34,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465528472] [2020-04-18 11:20:34,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:20:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:20:34,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:20:34,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465528472] [2020-04-18 11:20:34,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:20:34,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:20:34,610 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:20:34,612 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:20:34,617 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 98 transitions. [2020-04-18 11:20:34,618 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:20:34,624 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:20:34,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:20:34,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:20:34,625 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 11:20:34,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:20:34,635 INFO L93 Difference]: Finished difference Result 338 states and 906 transitions. [2020-04-18 11:20:34,636 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 906 transitions. [2020-04-18 11:20:34,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:20:34,637 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:20:34,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:20:34,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1756300641, now seen corresponding path program 3 times [2020-04-18 11:20:34,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:20:34,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438548993] [2020-04-18 11:20:34,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:20:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:20:34,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:20:34,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438548993] [2020-04-18 11:20:34,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:20:34,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:20:34,666 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:20:34,667 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:20:34,681 INFO L259 McrAutomatonBuilder]: Finished intersection with 61 states and 104 transitions. [2020-04-18 11:20:34,682 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:20:34,690 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:20:34,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:20:34,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:20:34,691 INFO L87 Difference]: Start difference. First operand 338 states and 906 transitions. Second operand 3 states. [2020-04-18 11:20:34,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:20:34,701 INFO L93 Difference]: Finished difference Result 522 states and 1316 transitions. [2020-04-18 11:20:34,701 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 1316 transitions. [2020-04-18 11:20:34,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:20:34,703 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:20:34,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:20:34,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1015496793, now seen corresponding path program 4 times [2020-04-18 11:20:34,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:20:34,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905558360] [2020-04-18 11:20:34,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:20:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:20:34,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:20:34,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905558360] [2020-04-18 11:20:34,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:20:34,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:20:34,766 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:20:34,767 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:20:34,783 INFO L259 McrAutomatonBuilder]: Finished intersection with 67 states and 116 transitions. [2020-04-18 11:20:34,783 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:20:34,864 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 11:20:34,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:20:34,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:20:34,865 INFO L87 Difference]: Start difference. First operand 522 states and 1316 transitions. Second operand 7 states. [2020-04-18 11:20:34,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:20:34,981 INFO L93 Difference]: Finished difference Result 588 states and 1399 transitions. [2020-04-18 11:20:34,981 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1399 transitions. [2020-04-18 11:20:34,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:20:34,983 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:20:34,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:20:34,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1244872481, now seen corresponding path program 5 times [2020-04-18 11:20:34,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:20:34,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427512923] [2020-04-18 11:20:34,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:20:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:20:35,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:20:35,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427512923] [2020-04-18 11:20:35,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:20:35,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:20:35,054 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:20:35,056 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:20:35,064 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 94 transitions. [2020-04-18 11:20:35,064 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:20:35,158 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 11:20:35,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:20:35,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:20:35,159 INFO L87 Difference]: Start difference. First operand 588 states and 1399 transitions. Second operand 9 states. [2020-04-18 11:20:35,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:20:35,340 INFO L93 Difference]: Finished difference Result 596 states and 1403 transitions. [2020-04-18 11:20:35,340 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 1403 transitions. [2020-04-18 11:20:35,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:20:35,342 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:20:35,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:20:35,343 INFO L82 PathProgramCache]: Analyzing trace with hash 16794271, now seen corresponding path program 6 times [2020-04-18 11:20:35,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:20:35,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858151008] [2020-04-18 11:20:35,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:20:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:20:35,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:20:35,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858151008] [2020-04-18 11:20:35,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:20:35,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:20:35,384 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:20:35,388 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:20:35,396 INFO L259 McrAutomatonBuilder]: Finished intersection with 67 states and 122 transitions. [2020-04-18 11:20:35,397 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:20:35,451 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:20:35,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:20:35,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:20:35,452 INFO L87 Difference]: Start difference. First operand 596 states and 1403 transitions. Second operand 5 states. [2020-04-18 11:20:35,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:20:35,488 INFO L93 Difference]: Finished difference Result 968 states and 2105 transitions. [2020-04-18 11:20:35,489 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 2105 transitions. [2020-04-18 11:20:35,491 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:20:35,491 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [141118374] [2020-04-18 11:20:35,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:20:35,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:20:35,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [141118374] [2020-04-18 11:20:35,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 11:20:35,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:20:35,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 11:20:35,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:20:35,493 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 14 states. [2020-04-18 11:20:35,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:20:35,730 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-18 11:20:35,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 11:20:35,730 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-04-18 11:20:35,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:20:35,731 INFO L225 Difference]: With dead ends: 35 [2020-04-18 11:20:35,731 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:20:35,732 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2020-04-18 11:20:35,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:20:35,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:20:35,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:20:35,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:20:35,732 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 11:20:35,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:20:35,733 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:20:35,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 11:20:35,733 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:20:35,733 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:20:35,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:20:35 BasicIcfg [2020-04-18 11:20:35,738 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:20:35,741 INFO L168 Benchmark]: Toolchain (without parser) took 6813.32 ms. Allocated memory was 146.3 MB in the beginning and 300.4 MB in the end (delta: 154.1 MB). Free memory was 102.4 MB in the beginning and 202.8 MB in the end (delta: -100.4 MB). Peak memory consumption was 53.7 MB. Max. memory is 7.1 GB. [2020-04-18 11:20:35,746 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 11:20:35,749 INFO L168 Benchmark]: CACSL2BoogieTranslator took 728.61 ms. Allocated memory was 146.3 MB in the beginning and 229.1 MB in the end (delta: 82.8 MB). Free memory was 100.3 MB in the beginning and 194.3 MB in the end (delta: -93.9 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:20:35,750 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.31 ms. Allocated memory is still 229.1 MB. Free memory was 194.3 MB in the beginning and 192.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-04-18 11:20:35,750 INFO L168 Benchmark]: Boogie Preprocessor took 31.38 ms. Allocated memory is still 229.1 MB. Free memory was 192.5 MB in the beginning and 190.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-04-18 11:20:35,751 INFO L168 Benchmark]: RCFGBuilder took 497.01 ms. Allocated memory is still 229.1 MB. Free memory was 190.7 MB in the beginning and 167.8 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-04-18 11:20:35,755 INFO L168 Benchmark]: TraceAbstraction took 5478.06 ms. Allocated memory was 229.1 MB in the beginning and 300.4 MB in the end (delta: 71.3 MB). Free memory was 167.8 MB in the beginning and 202.8 MB in the end (delta: -35.0 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:20:35,760 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 728.61 ms. Allocated memory was 146.3 MB in the beginning and 229.1 MB in the end (delta: 82.8 MB). Free memory was 100.3 MB in the beginning and 194.3 MB in the end (delta: -93.9 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.31 ms. Allocated memory is still 229.1 MB. Free memory was 194.3 MB in the beginning and 192.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.38 ms. Allocated memory is still 229.1 MB. Free memory was 192.5 MB in the beginning and 190.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 497.01 ms. Allocated memory is still 229.1 MB. Free memory was 190.7 MB in the beginning and 167.8 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5478.06 ms. Allocated memory was 229.1 MB in the beginning and 300.4 MB in the end (delta: 71.3 MB). Free memory was 167.8 MB in the beginning and 202.8 MB in the end (delta: -35.0 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 665 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 14 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2238 CheckedPairsTotal, 55 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 157 SDtfs, 198 SDslu, 315 SDs, 0 SdLazy, 224 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 285 GetRequests, 225 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...