/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:38:17,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:38:17,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:38:17,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:38:17,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:38:17,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:38:17,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:38:17,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:38:17,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:38:17,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:38:17,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:38:17,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:38:17,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:38:17,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:38:17,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:38:17,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:38:17,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:38:17,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:38:17,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:38:17,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:38:17,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:38:17,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:38:17,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:38:17,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:38:17,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:38:17,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:38:17,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:38:17,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:38:17,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:38:17,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:38:17,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:38:17,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:38:17,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:38:17,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:38:17,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:38:17,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:38:17,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:38:17,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:38:17,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:38:17,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:38:17,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:38:17,982 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf [2020-04-18 15:38:18,004 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:38:18,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:38:18,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:38:18,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:38:18,006 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:38:18,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:38:18,007 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:38:18,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:38:18,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:38:18,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:38:18,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:38:18,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:38:18,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:38:18,009 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:38:18,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:38:18,009 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:38:18,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:38:18,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:38:18,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:38:18,010 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:38:18,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:38:18,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:38:18,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:38:18,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:38:18,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:38:18,012 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:38:18,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:38:18,012 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:38:18,012 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:38:18,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:38:18,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:38:18,293 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:38:18,306 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:38:18,310 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:38:18,311 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:38:18,311 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:38:18,312 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i [2020-04-18 15:38:18,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fde68db95/8fc13536e2f145c495bfa0f7329896b7/FLAG15b5e20ad [2020-04-18 15:38:18,860 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:38:18,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i [2020-04-18 15:38:18,876 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fde68db95/8fc13536e2f145c495bfa0f7329896b7/FLAG15b5e20ad [2020-04-18 15:38:19,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fde68db95/8fc13536e2f145c495bfa0f7329896b7 [2020-04-18 15:38:19,206 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:38:19,227 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:38:19,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:38:19,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:38:19,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:38:19,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:38:19" (1/1) ... [2020-04-18 15:38:19,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b347a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:38:19, skipping insertion in model container [2020-04-18 15:38:19,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:38:19" (1/1) ... [2020-04-18 15:38:19,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:38:19,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:38:19,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:38:19,775 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:38:19,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:38:19,889 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:38:19,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:38:19 WrapperNode [2020-04-18 15:38:19,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:38:19,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:38:19,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:38:19,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:38:19,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:38:19" (1/1) ... [2020-04-18 15:38:19,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:38:19" (1/1) ... [2020-04-18 15:38:19,938 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:38:19,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:38:19,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:38:19,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:38:19,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:38:19" (1/1) ... [2020-04-18 15:38:19,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:38:19" (1/1) ... [2020-04-18 15:38:19,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:38:19" (1/1) ... [2020-04-18 15:38:19,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:38:19" (1/1) ... [2020-04-18 15:38:19,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:38:19" (1/1) ... [2020-04-18 15:38:19,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:38:19" (1/1) ... [2020-04-18 15:38:19,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:38:19" (1/1) ... [2020-04-18 15:38:19,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:38:19,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:38:19,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:38:19,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:38:19,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:38:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:38:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:38:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:38:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:38:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:38:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:38:20,043 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:38:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:38:20,044 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:38:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:38:20,045 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:38:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:38:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:38:20,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:38:20,047 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 15:38:20,494 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:38:20,494 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:38:20,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:38:20 BoogieIcfgContainer [2020-04-18 15:38:20,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:38:20,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:38:20,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:38:20,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:38:20,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:38:19" (1/3) ... [2020-04-18 15:38:20,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dcb00d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:38:20, skipping insertion in model container [2020-04-18 15:38:20,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:38:19" (2/3) ... [2020-04-18 15:38:20,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dcb00d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:38:20, skipping insertion in model container [2020-04-18 15:38:20,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:38:20" (3/3) ... [2020-04-18 15:38:20,508 INFO L109 eAbstractionObserver]: Analyzing ICFG safe031_tso.opt.i [2020-04-18 15:38:20,518 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:38:20,518 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:38:20,526 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:38:20,527 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:38:20,563 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,563 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,563 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,564 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,564 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,564 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,565 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,565 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,565 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,566 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,566 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,566 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,567 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,567 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,567 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,567 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,568 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,568 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,571 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,572 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,572 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,572 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,578 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,578 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,578 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,578 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,580 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,581 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,581 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,581 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:38:20,595 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:38:20,615 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:38:20,616 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:38:20,616 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:38:20,616 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:38:20,616 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:38:20,617 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:38:20,617 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:38:20,617 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:38:20,632 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 15:38:20,634 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 15:38:20,676 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 15:38:20,676 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:38:20,681 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:38:20,684 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 15:38:20,704 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 15:38:20,705 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:38:20,705 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:38:20,707 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 15:38:20,708 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:38:22,187 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-04-18 15:38:22,293 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2238 [2020-04-18 15:38:22,293 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-04-18 15:38:22,297 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-04-18 15:38:22,324 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 15:38:22,327 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 15:38:22,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:38:22,339 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:38:22,340 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:38:22,340 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:38:22,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:38:22,347 INFO L82 PathProgramCache]: Analyzing trace with hash -389059823, now seen corresponding path program 1 times [2020-04-18 15:38:22,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:38:22,354 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1959865377] [2020-04-18 15:38:22,367 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:38:22,379 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:38:22,380 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:38:22,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:38:22,381 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:38:22,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:38:22,381 INFO L82 PathProgramCache]: Analyzing trace with hash -389059823, now seen corresponding path program 2 times [2020-04-18 15:38:22,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:38:22,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541519339] [2020-04-18 15:38:22,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:38:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:38:22,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:38:22,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541519339] [2020-04-18 15:38:22,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:38:22,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:38:22,661 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:38:22,662 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:38:22,665 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:38:22,665 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:38:22,675 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:38:22,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:38:22,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:38:22,682 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 15:38:22,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:38:22,687 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:38:22,687 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:38:22,688 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:38:22,688 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1959865377] [2020-04-18 15:38:22,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:38:22,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:38:22,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1959865377] [2020-04-18 15:38:22,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:38:22,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:38:22,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:38:22,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:38:22,696 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 15:38:22,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:38:22,750 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-04-18 15:38:22,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:38:22,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 15:38:22,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:38:22,777 INFO L225 Difference]: With dead ends: 290 [2020-04-18 15:38:22,782 INFO L226 Difference]: Without dead ends: 226 [2020-04-18 15:38:22,784 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:38:22,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-04-18 15:38:22,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-04-18 15:38:22,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-04-18 15:38:22,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-04-18 15:38:22,853 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-04-18 15:38:22,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:38:22,855 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-04-18 15:38:22,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:38:22,855 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-04-18 15:38:22,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:38:22,857 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:38:22,857 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:38:22,857 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:38:22,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:38:22,857 INFO L82 PathProgramCache]: Analyzing trace with hash 824029864, now seen corresponding path program 1 times [2020-04-18 15:38:22,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:38:22,858 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1736222690] [2020-04-18 15:38:22,859 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:38:22,859 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-04-18 15:38:22,860 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 15:38:22,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:38:22,860 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:38:22,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:38:22,861 INFO L82 PathProgramCache]: Analyzing trace with hash 824029864, now seen corresponding path program 2 times [2020-04-18 15:38:22,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:38:22,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466048653] [2020-04-18 15:38:22,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:38:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:38:22,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:38:22,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466048653] [2020-04-18 15:38:22,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:38:22,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:38:22,923 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:38:22,923 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:38:22,925 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 15:38:22,925 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:38:22,929 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:38:22,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:38:22,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:38:22,930 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 15:38:22,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:38:22,931 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-04-18 15:38:22,931 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-04-18 15:38:22,931 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:38:22,932 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1736222690] [2020-04-18 15:38:22,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:38:22,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:38:22,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1736222690] [2020-04-18 15:38:22,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:38:22,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:38:22,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:38:22,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:38:22,934 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-04-18 15:38:22,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:38:22,944 INFO L93 Difference]: Finished difference Result 220 states and 604 transitions. [2020-04-18 15:38:22,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:38:22,945 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 15:38:22,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:38:22,947 INFO L225 Difference]: With dead ends: 220 [2020-04-18 15:38:22,948 INFO L226 Difference]: Without dead ends: 220 [2020-04-18 15:38:22,949 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:38:22,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-04-18 15:38:22,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-04-18 15:38:22,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-04-18 15:38:22,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 604 transitions. [2020-04-18 15:38:22,971 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 604 transitions. Word has length 9 [2020-04-18 15:38:22,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:38:22,971 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 604 transitions. [2020-04-18 15:38:22,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:38:22,972 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 604 transitions. [2020-04-18 15:38:22,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:38:22,973 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:38:22,973 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:38:22,973 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:38:22,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:38:22,974 INFO L82 PathProgramCache]: Analyzing trace with hash -224925294, now seen corresponding path program 1 times [2020-04-18 15:38:22,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:38:22,974 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2098522792] [2020-04-18 15:38:22,975 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:38:22,976 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 34 transitions. [2020-04-18 15:38:22,976 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-04-18 15:38:22,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:38:22,977 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:38:22,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:38:22,977 INFO L82 PathProgramCache]: Analyzing trace with hash -224925294, now seen corresponding path program 2 times [2020-04-18 15:38:22,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:38:22,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930922215] [2020-04-18 15:38:22,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:38:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:38:23,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:38:23,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930922215] [2020-04-18 15:38:23,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:38:23,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:38:23,113 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:38:23,114 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:38:23,115 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-04-18 15:38:23,115 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:38:23,128 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:38:23,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:38:23,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:38:23,129 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2020-04-18 15:38:23,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:38:23,140 INFO L93 Difference]: Finished difference Result 22 states and 34 transitions. [2020-04-18 15:38:23,141 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 34 transitions. [2020-04-18 15:38:23,141 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:38:23,141 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2098522792] [2020-04-18 15:38:23,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:38:23,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:38:23,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2098522792] [2020-04-18 15:38:23,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:38:23,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:38:23,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:38:23,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:38:23,143 INFO L87 Difference]: Start difference. First operand 220 states and 604 transitions. Second operand 4 states. [2020-04-18 15:38:23,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:38:23,176 INFO L93 Difference]: Finished difference Result 240 states and 599 transitions. [2020-04-18 15:38:23,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:38:23,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 15:38:23,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:38:23,178 INFO L225 Difference]: With dead ends: 240 [2020-04-18 15:38:23,178 INFO L226 Difference]: Without dead ends: 176 [2020-04-18 15:38:23,179 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 15:38:23,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-04-18 15:38:23,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2020-04-18 15:38:23,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-04-18 15:38:23,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 428 transitions. [2020-04-18 15:38:23,200 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 428 transitions. Word has length 10 [2020-04-18 15:38:23,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:38:23,200 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 428 transitions. [2020-04-18 15:38:23,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:38:23,200 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 428 transitions. [2020-04-18 15:38:23,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:38:23,202 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:38:23,202 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:38:23,202 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:38:23,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:38:23,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1617246421, now seen corresponding path program 1 times [2020-04-18 15:38:23,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:38:23,203 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [242764510] [2020-04-18 15:38:23,205 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:38:23,206 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 15:38:23,206 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-04-18 15:38:23,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:38:23,207 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:38:23,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:38:23,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1617246421, now seen corresponding path program 2 times [2020-04-18 15:38:23,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:38:23,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288743916] [2020-04-18 15:38:23,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:38:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:38:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:38:23,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288743916] [2020-04-18 15:38:23,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:38:23,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:38:23,253 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:38:23,254 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:38:23,255 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 15:38:23,255 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:38:23,258 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:38:23,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:38:23,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:38:23,259 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2020-04-18 15:38:23,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:38:23,262 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2020-04-18 15:38:23,262 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2020-04-18 15:38:23,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:38:23,263 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:38:23,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:38:23,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1618721941, now seen corresponding path program 3 times [2020-04-18 15:38:23,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:38:23,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449066596] [2020-04-18 15:38:23,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:38:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:38:23,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:38:23,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449066596] [2020-04-18 15:38:23,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:38:23,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:38:23,302 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:38:23,303 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:38:23,304 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 13 transitions. [2020-04-18 15:38:23,304 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:38:23,309 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:38:23,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:38:23,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:38:23,309 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 3 states. [2020-04-18 15:38:23,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:38:23,312 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2020-04-18 15:38:23,313 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2020-04-18 15:38:23,313 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:38:23,313 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [242764510] [2020-04-18 15:38:23,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:38:23,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:38:23,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [242764510] [2020-04-18 15:38:23,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:38:23,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:38:23,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:38:23,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:38:23,315 INFO L87 Difference]: Start difference. First operand 176 states and 428 transitions. Second operand 4 states. [2020-04-18 15:38:23,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:38:23,330 INFO L93 Difference]: Finished difference Result 225 states and 522 transitions. [2020-04-18 15:38:23,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:38:23,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 15:38:23,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:38:23,332 INFO L225 Difference]: With dead ends: 225 [2020-04-18 15:38:23,332 INFO L226 Difference]: Without dead ends: 183 [2020-04-18 15:38:23,333 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 15:38:23,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-04-18 15:38:23,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2020-04-18 15:38:23,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-04-18 15:38:23,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 396 transitions. [2020-04-18 15:38:23,342 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 396 transitions. Word has length 11 [2020-04-18 15:38:23,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:38:23,343 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 396 transitions. [2020-04-18 15:38:23,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:38:23,343 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 396 transitions. [2020-04-18 15:38:23,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:38:23,344 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:38:23,344 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:38:23,344 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:38:23,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:38:23,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1444727206, now seen corresponding path program 1 times [2020-04-18 15:38:23,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:38:23,345 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [245550825] [2020-04-18 15:38:23,346 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:38:23,347 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 76 transitions. [2020-04-18 15:38:23,347 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-04-18 15:38:23,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:38:23,348 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:38:23,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:38:23,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1444727206, now seen corresponding path program 2 times [2020-04-18 15:38:23,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:38:23,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730403089] [2020-04-18 15:38:23,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:38:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:38:23,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:38:23,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730403089] [2020-04-18 15:38:23,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:38:23,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:38:23,414 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:38:23,415 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:38:23,418 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 44 transitions. [2020-04-18 15:38:23,418 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:38:23,505 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:38:23,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:38:23,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:38:23,506 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 7 states. [2020-04-18 15:38:23,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:38:23,535 INFO L93 Difference]: Finished difference Result 42 states and 76 transitions. [2020-04-18 15:38:23,535 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 76 transitions. [2020-04-18 15:38:23,536 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:38:23,536 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [245550825] [2020-04-18 15:38:23,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:38:23,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:38:23,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [245550825] [2020-04-18 15:38:23,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:38:23,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:38:23,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:38:23,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:38:23,538 INFO L87 Difference]: Start difference. First operand 171 states and 396 transitions. Second operand 7 states. [2020-04-18 15:38:23,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:38:23,590 INFO L93 Difference]: Finished difference Result 162 states and 347 transitions. [2020-04-18 15:38:23,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 15:38:23,590 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-04-18 15:38:23,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:38:23,591 INFO L225 Difference]: With dead ends: 162 [2020-04-18 15:38:23,592 INFO L226 Difference]: Without dead ends: 125 [2020-04-18 15:38:23,593 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 15:38:23,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-04-18 15:38:23,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-04-18 15:38:23,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-04-18 15:38:23,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 263 transitions. [2020-04-18 15:38:23,602 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 263 transitions. Word has length 12 [2020-04-18 15:38:23,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:38:23,602 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 263 transitions. [2020-04-18 15:38:23,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:38:23,603 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 263 transitions. [2020-04-18 15:38:23,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:38:23,604 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:38:23,604 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:38:23,604 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:38:23,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:38:23,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1109140729, now seen corresponding path program 1 times [2020-04-18 15:38:23,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:38:23,605 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1059127914] [2020-04-18 15:38:23,606 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:38:23,608 INFO L259 McrAutomatonBuilder]: Finished intersection with 90 states and 200 transitions. [2020-04-18 15:38:23,614 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-04-18 15:38:23,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:38:23,614 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:38:23,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:38:23,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1109140729, now seen corresponding path program 2 times [2020-04-18 15:38:23,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:38:23,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618743317] [2020-04-18 15:38:23,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:38:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:38:23,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:38:23,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618743317] [2020-04-18 15:38:23,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:38:23,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:38:23,669 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:38:23,670 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:38:23,675 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 66 transitions. [2020-04-18 15:38:23,675 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:38:23,697 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:38:23,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:38:23,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:38:23,698 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 4 states. [2020-04-18 15:38:23,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:38:23,711 INFO L93 Difference]: Finished difference Result 98 states and 210 transitions. [2020-04-18 15:38:23,712 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 210 transitions. [2020-04-18 15:38:23,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:38:23,712 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:38:23,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:38:23,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1107479929, now seen corresponding path program 3 times [2020-04-18 15:38:23,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:38:23,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666932331] [2020-04-18 15:38:23,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:38:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:38:23,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:38:23,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666932331] [2020-04-18 15:38:23,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:38:23,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:38:23,767 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:38:23,768 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:38:23,772 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 54 transitions. [2020-04-18 15:38:23,772 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:38:23,778 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:38:23,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:38:23,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:38:23,779 INFO L87 Difference]: Start difference. First operand 98 states and 210 transitions. Second operand 3 states. [2020-04-18 15:38:23,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:38:23,783 INFO L93 Difference]: Finished difference Result 98 states and 210 transitions. [2020-04-18 15:38:23,783 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 210 transitions. [2020-04-18 15:38:23,783 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:38:23,784 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1059127914] [2020-04-18 15:38:23,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:38:23,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:38:23,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1059127914] [2020-04-18 15:38:23,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:38:23,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:38:23,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:38:23,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:38:23,785 INFO L87 Difference]: Start difference. First operand 125 states and 263 transitions. Second operand 5 states. [2020-04-18 15:38:23,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:38:23,803 INFO L93 Difference]: Finished difference Result 157 states and 314 transitions. [2020-04-18 15:38:23,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:38:23,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 15:38:23,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:38:23,806 INFO L225 Difference]: With dead ends: 157 [2020-04-18 15:38:23,807 INFO L226 Difference]: Without dead ends: 120 [2020-04-18 15:38:23,807 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 15:38:23,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-04-18 15:38:23,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-04-18 15:38:23,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-04-18 15:38:23,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 233 transitions. [2020-04-18 15:38:23,812 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 233 transitions. Word has length 14 [2020-04-18 15:38:23,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:38:23,813 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 233 transitions. [2020-04-18 15:38:23,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:38:23,813 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 233 transitions. [2020-04-18 15:38:23,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:38:23,814 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:38:23,814 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:38:23,814 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:38:23,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:38:23,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1574578981, now seen corresponding path program 1 times [2020-04-18 15:38:23,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:38:23,815 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [786162989] [2020-04-18 15:38:23,816 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:38:23,817 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 134 transitions. [2020-04-18 15:38:23,818 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-04-18 15:38:23,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:38:23,819 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:38:23,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:38:23,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1109878777, now seen corresponding path program 2 times [2020-04-18 15:38:23,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:38:23,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211369857] [2020-04-18 15:38:23,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:38:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:38:23,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:38:23,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211369857] [2020-04-18 15:38:23,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:38:23,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:38:23,852 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:38:23,853 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:38:23,857 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 49 transitions. [2020-04-18 15:38:23,858 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:38:23,862 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:38:23,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:38:23,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:38:23,863 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 3 states. [2020-04-18 15:38:23,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:38:23,879 INFO L93 Difference]: Finished difference Result 92 states and 177 transitions. [2020-04-18 15:38:23,880 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 177 transitions. [2020-04-18 15:38:23,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:38:23,881 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:38:23,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:38:23,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1108403257, now seen corresponding path program 3 times [2020-04-18 15:38:23,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:38:23,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139826815] [2020-04-18 15:38:23,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:38:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:38:23,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:38:23,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139826815] [2020-04-18 15:38:23,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:38:23,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:38:23,953 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:38:23,954 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:38:23,959 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 54 transitions. [2020-04-18 15:38:23,959 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:38:24,039 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:38:24,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:38:24,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:38:24,040 INFO L87 Difference]: Start difference. First operand 92 states and 177 transitions. Second operand 7 states. [2020-04-18 15:38:24,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:38:24,109 INFO L93 Difference]: Finished difference Result 96 states and 179 transitions. [2020-04-18 15:38:24,109 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 179 transitions. [2020-04-18 15:38:24,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:38:24,110 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:38:24,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:38:24,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1574578981, now seen corresponding path program 4 times [2020-04-18 15:38:24,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:38:24,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588220860] [2020-04-18 15:38:24,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:38:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:38:24,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:38:24,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588220860] [2020-04-18 15:38:24,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:38:24,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:38:24,208 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:38:24,210 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:38:24,212 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 40 transitions. [2020-04-18 15:38:24,212 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:38:24,224 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:38:24,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:38:24,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:38:24,225 INFO L87 Difference]: Start difference. First operand 96 states and 179 transitions. Second operand 6 states. [2020-04-18 15:38:24,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:38:24,271 INFO L93 Difference]: Finished difference Result 96 states and 179 transitions. [2020-04-18 15:38:24,271 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 179 transitions. [2020-04-18 15:38:24,271 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:38:24,272 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [786162989] [2020-04-18 15:38:24,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:38:24,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:38:24,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [786162989] [2020-04-18 15:38:24,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 15:38:24,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:38:24,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 15:38:24,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:38:24,274 INFO L87 Difference]: Start difference. First operand 118 states and 233 transitions. Second operand 9 states. [2020-04-18 15:38:24,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:38:24,397 INFO L93 Difference]: Finished difference Result 112 states and 219 transitions. [2020-04-18 15:38:24,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 15:38:24,397 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-04-18 15:38:24,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:38:24,398 INFO L225 Difference]: With dead ends: 112 [2020-04-18 15:38:24,398 INFO L226 Difference]: Without dead ends: 36 [2020-04-18 15:38:24,399 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 15:38:24,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-18 15:38:24,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-18 15:38:24,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-18 15:38:24,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-18 15:38:24,401 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 14 [2020-04-18 15:38:24,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:38:24,402 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-18 15:38:24,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 15:38:24,402 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-18 15:38:24,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:38:24,402 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:38:24,402 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:38:24,402 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:38:24,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:38:24,403 INFO L82 PathProgramCache]: Analyzing trace with hash 16794271, now seen corresponding path program 1 times [2020-04-18 15:38:24,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:38:24,403 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [140977442] [2020-04-18 15:38:24,404 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:38:24,413 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 15:38:24,415 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 15:38:24,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:38:24,416 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:38:24,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:38:24,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1757961441, now seen corresponding path program 2 times [2020-04-18 15:38:24,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:38:24,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294767590] [2020-04-18 15:38:24,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:38:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:38:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:38:24,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294767590] [2020-04-18 15:38:24,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:38:24,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:38:24,450 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:38:24,451 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:38:24,462 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 98 transitions. [2020-04-18 15:38:24,462 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:38:24,473 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:38:24,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:38:24,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:38:24,477 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 15:38:24,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:38:24,494 INFO L93 Difference]: Finished difference Result 338 states and 906 transitions. [2020-04-18 15:38:24,494 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 906 transitions. [2020-04-18 15:38:24,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:38:24,496 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:38:24,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:38:24,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1756300641, now seen corresponding path program 3 times [2020-04-18 15:38:24,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:38:24,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096565455] [2020-04-18 15:38:24,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:38:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:38:24,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:38:24,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096565455] [2020-04-18 15:38:24,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:38:24,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:38:24,529 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:38:24,532 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:38:24,544 INFO L259 McrAutomatonBuilder]: Finished intersection with 61 states and 104 transitions. [2020-04-18 15:38:24,544 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:38:24,558 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:38:24,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:38:24,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:38:24,560 INFO L87 Difference]: Start difference. First operand 338 states and 906 transitions. Second operand 3 states. [2020-04-18 15:38:24,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:38:24,575 INFO L93 Difference]: Finished difference Result 522 states and 1316 transitions. [2020-04-18 15:38:24,575 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 1316 transitions. [2020-04-18 15:38:24,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:38:24,577 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:38:24,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:38:24,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1015496793, now seen corresponding path program 4 times [2020-04-18 15:38:24,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:38:24,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164647263] [2020-04-18 15:38:24,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:38:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:38:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:38:24,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164647263] [2020-04-18 15:38:24,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:38:24,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:38:24,664 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:38:24,666 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:38:24,682 INFO L259 McrAutomatonBuilder]: Finished intersection with 67 states and 116 transitions. [2020-04-18 15:38:24,682 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:38:24,760 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 15:38:24,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:38:24,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:38:24,761 INFO L87 Difference]: Start difference. First operand 522 states and 1316 transitions. Second operand 7 states. [2020-04-18 15:38:24,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:38:24,897 INFO L93 Difference]: Finished difference Result 588 states and 1399 transitions. [2020-04-18 15:38:24,897 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1399 transitions. [2020-04-18 15:38:24,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:38:24,899 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:38:24,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:38:24,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1244872481, now seen corresponding path program 5 times [2020-04-18 15:38:24,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:38:24,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074924995] [2020-04-18 15:38:24,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:38:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:38:24,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:38:24,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074924995] [2020-04-18 15:38:24,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:38:24,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:38:24,961 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:38:24,965 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:38:24,971 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 94 transitions. [2020-04-18 15:38:24,971 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:38:25,069 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 15:38:25,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 15:38:25,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:38:25,070 INFO L87 Difference]: Start difference. First operand 588 states and 1399 transitions. Second operand 9 states. [2020-04-18 15:38:25,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:38:25,211 INFO L93 Difference]: Finished difference Result 596 states and 1403 transitions. [2020-04-18 15:38:25,212 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 1403 transitions. [2020-04-18 15:38:25,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:38:25,213 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:38:25,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:38:25,213 INFO L82 PathProgramCache]: Analyzing trace with hash 16794271, now seen corresponding path program 6 times [2020-04-18 15:38:25,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:38:25,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120118182] [2020-04-18 15:38:25,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:38:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:38:25,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:38:25,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120118182] [2020-04-18 15:38:25,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:38:25,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:38:25,241 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:38:25,242 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:38:25,248 INFO L259 McrAutomatonBuilder]: Finished intersection with 67 states and 122 transitions. [2020-04-18 15:38:25,249 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:38:25,308 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:38:25,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:38:25,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:38:25,310 INFO L87 Difference]: Start difference. First operand 596 states and 1403 transitions. Second operand 5 states. [2020-04-18 15:38:25,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:38:25,342 INFO L93 Difference]: Finished difference Result 968 states and 2105 transitions. [2020-04-18 15:38:25,343 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 2105 transitions. [2020-04-18 15:38:25,345 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:38:25,345 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [140977442] [2020-04-18 15:38:25,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:38:25,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:38:25,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [140977442] [2020-04-18 15:38:25,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 15:38:25,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:38:25,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 15:38:25,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-04-18 15:38:25,351 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 14 states. [2020-04-18 15:38:25,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:38:25,551 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-18 15:38:25,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 15:38:25,551 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-04-18 15:38:25,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:38:25,552 INFO L225 Difference]: With dead ends: 35 [2020-04-18 15:38:25,552 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:38:25,552 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 15:38:25,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:38:25,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:38:25,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:38:25,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:38:25,553 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 15:38:25,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:38:25,554 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:38:25,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 15:38:25,554 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:38:25,554 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:38:25,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:38:25 BasicIcfg [2020-04-18 15:38:25,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:38:25,561 INFO L168 Benchmark]: Toolchain (without parser) took 6352.23 ms. Allocated memory was 135.8 MB in the beginning and 304.6 MB in the end (delta: 168.8 MB). Free memory was 97.8 MB in the beginning and 161.3 MB in the end (delta: -63.5 MB). Peak memory consumption was 105.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:38:25,567 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 135.8 MB. Free memory was 117.7 MB in the beginning and 117.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-18 15:38:25,568 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.42 ms. Allocated memory was 135.8 MB in the beginning and 198.7 MB in the end (delta: 62.9 MB). Free memory was 95.9 MB in the beginning and 154.0 MB in the end (delta: -58.2 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:38:25,568 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.03 ms. Allocated memory is still 198.7 MB. Free memory was 154.0 MB in the beginning and 151.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 15:38:25,569 INFO L168 Benchmark]: Boogie Preprocessor took 26.80 ms. Allocated memory is still 198.7 MB. Free memory was 151.9 MB in the beginning and 150.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 15:38:25,571 INFO L168 Benchmark]: RCFGBuilder took 533.37 ms. Allocated memory is still 198.7 MB. Free memory was 150.5 MB in the beginning and 128.9 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-04-18 15:38:25,572 INFO L168 Benchmark]: TraceAbstraction took 5057.96 ms. Allocated memory was 198.7 MB in the beginning and 304.6 MB in the end (delta: 105.9 MB). Free memory was 128.2 MB in the beginning and 161.3 MB in the end (delta: -33.1 MB). Peak memory consumption was 72.8 MB. Max. memory is 7.1 GB. [2020-04-18 15:38:25,579 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 135.8 MB. Free memory was 117.7 MB in the beginning and 117.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 662.42 ms. Allocated memory was 135.8 MB in the beginning and 198.7 MB in the end (delta: 62.9 MB). Free memory was 95.9 MB in the beginning and 154.0 MB in the end (delta: -58.2 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.03 ms. Allocated memory is still 198.7 MB. Free memory was 154.0 MB in the beginning and 151.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.80 ms. Allocated memory is still 198.7 MB. Free memory was 151.9 MB in the beginning and 150.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 533.37 ms. Allocated memory is still 198.7 MB. Free memory was 150.5 MB in the beginning and 128.9 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5057.96 ms. Allocated memory was 198.7 MB in the beginning and 304.6 MB in the end (delta: 105.9 MB). Free memory was 128.2 MB in the beginning and 161.3 MB in the end (delta: -33.1 MB). Peak memory consumption was 72.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 635 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 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: 4.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, 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, 0.6s 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...