/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/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:10:21,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:10:21,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:10:21,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:10:21,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:10:21,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:10:21,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:10:21,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:10:21,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:10:21,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:10:21,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:10:21,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:10:21,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:10:21,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:10:21,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:10:21,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:10:21,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:10:21,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:10:21,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:10:21,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:10:21,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:10:21,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:10:21,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:10:21,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:10:21,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:10:21,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:10:21,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:10:21,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:10:21,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:10:21,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:10:21,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:10:22,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:10:22,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:10:22,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:10:22,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:10:22,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:10:22,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:10:22,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:10:22,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:10:22,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:10:22,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:10:22,006 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 21:10:22,028 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:10:22,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:10:22,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:10:22,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:10:22,030 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:10:22,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:10:22,030 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:10:22,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:10:22,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:10:22,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:10:22,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:10:22,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:10:22,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:10:22,032 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:10:22,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:10:22,032 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:10:22,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:10:22,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:10:22,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:10:22,033 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:10:22,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:10:22,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:10:22,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:10:22,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:10:22,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:10:22,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:10:22,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:10:22,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:10:22,035 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:10:22,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-08-21 21:10:22,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:10:22,340 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:10:22,346 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:10:22,347 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:10:22,349 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:10:22,349 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c [2020-08-21 21:10:22,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2283b1f1/4a8cdee659164abaa8b43c64e3d5de83/FLAGbf7140147 [2020-08-21 21:10:22,919 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:10:22,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c [2020-08-21 21:10:22,933 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2283b1f1/4a8cdee659164abaa8b43c64e3d5de83/FLAGbf7140147 [2020-08-21 21:10:23,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2283b1f1/4a8cdee659164abaa8b43c64e3d5de83 [2020-08-21 21:10:23,232 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:10:23,233 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:10:23,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:10:23,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:10:23,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:10:23,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:10:23" (1/1) ... [2020-08-21 21:10:23,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c2ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:10:23, skipping insertion in model container [2020-08-21 21:10:23,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:10:23" (1/1) ... [2020-08-21 21:10:23,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:10:23,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:10:23,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:10:23,751 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:10:23,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:10:23,858 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:10:23,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:10:23 WrapperNode [2020-08-21 21:10:23,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:10:23,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:10:23,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:10:23,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:10:23,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:10:23" (1/1) ... [2020-08-21 21:10:23,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:10:23" (1/1) ... [2020-08-21 21:10:23,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:10:23" (1/1) ... [2020-08-21 21:10:23,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:10:23" (1/1) ... [2020-08-21 21:10:23,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:10:23" (1/1) ... [2020-08-21 21:10:23,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:10:23" (1/1) ... [2020-08-21 21:10:23,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:10:23" (1/1) ... [2020-08-21 21:10:23,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:10:23,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:10:23,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:10:23,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:10:23,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:10:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-21 21:10:24,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:10:24,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:10:24,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 21:10:24,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 21:10:24,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 21:10:24,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 21:10:24,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 21:10:24,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 21:10:24,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 21:10:24,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 21:10:24,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 21:10:24,014 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 21:10:24,014 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 21:10:24,014 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 21:10:24,014 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 21:10:24,015 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 21:10:24,016 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 21:10:24,016 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 21:10:24,016 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 21:10:24,016 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 21:10:24,016 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 21:10:24,017 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 21:10:24,017 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 21:10:24,017 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 21:10:24,017 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 21:10:24,017 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 21:10:24,017 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 21:10:24,017 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 21:10:24,018 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 21:10:24,019 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 21:10:24,019 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 21:10:24,019 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 21:10:24,019 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 21:10:24,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 21:10:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 21:10:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 21:10:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 21:10:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 21:10:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:10:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:10:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:10:24,021 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 21:10:24,021 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 21:10:24,021 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 21:10:24,023 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 21:10:24,024 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 21:10:24,024 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 21:10:24,024 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 21:10:24,024 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:10:24,025 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 21:10:24,025 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 21:10:24,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:10:24,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 21:10:24,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:10:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 21:10:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 21:10:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:10:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 21:10:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 21:10:24,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:10:24,027 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 21:10:24,027 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 21:10:24,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:10:24,027 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 21:10:24,027 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 21:10:24,027 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 21:10:24,028 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 21:10:24,028 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 21:10:24,028 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 21:10:24,028 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 21:10:24,028 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 21:10:24,029 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 21:10:24,029 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 21:10:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 21:10:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 21:10:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 21:10:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 21:10:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 21:10:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 21:10:24,032 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 21:10:24,032 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 21:10:24,032 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 21:10:24,032 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 21:10:24,033 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 21:10:24,033 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 21:10:24,033 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 21:10:24,033 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 21:10:24,033 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 21:10:24,033 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:10:24,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:10:24,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 21:10:24,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:10:25,131 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:10:25,131 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 21:10:25,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:10:25 BoogieIcfgContainer [2020-08-21 21:10:25,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:10:25,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:10:25,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:10:25,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:10:25,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:10:23" (1/3) ... [2020-08-21 21:10:25,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782ceb27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:10:25, skipping insertion in model container [2020-08-21 21:10:25,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:10:23" (2/3) ... [2020-08-21 21:10:25,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782ceb27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:10:25, skipping insertion in model container [2020-08-21 21:10:25,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:10:25" (3/3) ... [2020-08-21 21:10:25,145 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product41.cil.c [2020-08-21 21:10:25,156 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:10:25,164 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:10:25,178 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:10:25,204 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:10:25,204 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:10:25,205 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:10:25,205 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:10:25,205 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:10:25,205 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:10:25,205 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:10:25,205 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:10:25,228 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2020-08-21 21:10:25,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 21:10:25,238 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:10:25,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:10:25,239 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:10:25,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:10:25,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1966863296, now seen corresponding path program 1 times [2020-08-21 21:10:25,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:10:25,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728429188] [2020-08-21 21:10:25,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:10:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:25,952 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:10:25,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:10:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:26,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:10:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:26,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:10:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:26,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:10:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:26,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:10:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:26,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:10:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:26,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 21:10:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:26,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 21:10:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:26,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:10:26,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728429188] [2020-08-21 21:10:26,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:10:26,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:10:26,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321995905] [2020-08-21 21:10:26,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:10:26,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:10:26,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:10:26,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:10:26,113 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 4 states. [2020-08-21 21:10:27,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:10:27,057 INFO L93 Difference]: Finished difference Result 274 states and 358 transitions. [2020-08-21 21:10:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 21:10:27,059 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 21:10:27,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:10:27,074 INFO L225 Difference]: With dead ends: 274 [2020-08-21 21:10:27,074 INFO L226 Difference]: Without dead ends: 153 [2020-08-21 21:10:27,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:10:27,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-21 21:10:27,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 122. [2020-08-21 21:10:27,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-21 21:10:27,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 143 transitions. [2020-08-21 21:10:27,193 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 143 transitions. Word has length 51 [2020-08-21 21:10:27,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:10:27,194 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 143 transitions. [2020-08-21 21:10:27,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:10:27,194 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 143 transitions. [2020-08-21 21:10:27,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 21:10:27,199 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:10:27,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:10:27,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:10:27,200 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:10:27,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:10:27,200 INFO L82 PathProgramCache]: Analyzing trace with hash 335710898, now seen corresponding path program 1 times [2020-08-21 21:10:27,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:10:27,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878683319] [2020-08-21 21:10:27,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:10:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:27,558 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:10:27,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:10:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:27,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:10:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:27,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:10:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:27,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:10:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:27,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:10:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:27,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:10:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:27,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:10:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:27,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 21:10:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:27,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:10:27,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878683319] [2020-08-21 21:10:27,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:10:27,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 21:10:27,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532003533] [2020-08-21 21:10:27,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 21:10:27,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:10:27,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 21:10:27,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:10:27,614 INFO L87 Difference]: Start difference. First operand 122 states and 143 transitions. Second operand 5 states. [2020-08-21 21:10:28,080 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:10:28,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:10:28,798 INFO L93 Difference]: Finished difference Result 219 states and 269 transitions. [2020-08-21 21:10:28,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 21:10:28,801 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 21:10:28,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:10:28,804 INFO L225 Difference]: With dead ends: 219 [2020-08-21 21:10:28,804 INFO L226 Difference]: Without dead ends: 143 [2020-08-21 21:10:28,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:10:28,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-08-21 21:10:28,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 113. [2020-08-21 21:10:28,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-21 21:10:28,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 131 transitions. [2020-08-21 21:10:28,853 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 131 transitions. Word has length 52 [2020-08-21 21:10:28,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:10:28,853 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 131 transitions. [2020-08-21 21:10:28,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 21:10:28,853 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 131 transitions. [2020-08-21 21:10:28,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-21 21:10:28,855 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:10:28,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:10:28,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:10:28,856 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:10:28,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:10:28,856 INFO L82 PathProgramCache]: Analyzing trace with hash 727255979, now seen corresponding path program 1 times [2020-08-21 21:10:28,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:10:28,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091607094] [2020-08-21 21:10:28,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:10:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:29,169 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:10:29,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:10:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:29,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:10:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:29,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:10:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:29,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:10:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:29,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:10:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:29,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:10:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:29,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 21:10:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:29,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 21:10:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:29,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:10:29,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091607094] [2020-08-21 21:10:29,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:10:29,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:10:29,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68193352] [2020-08-21 21:10:29,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:10:29,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:10:29,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:10:29,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:10:29,258 INFO L87 Difference]: Start difference. First operand 113 states and 131 transitions. Second operand 9 states. [2020-08-21 21:10:29,721 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:10:30,040 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:10:30,303 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:10:30,579 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:10:31,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:10:31,769 INFO L93 Difference]: Finished difference Result 228 states and 284 transitions. [2020-08-21 21:10:31,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 21:10:31,776 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-21 21:10:31,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:10:31,778 INFO L225 Difference]: With dead ends: 228 [2020-08-21 21:10:31,778 INFO L226 Difference]: Without dead ends: 143 [2020-08-21 21:10:31,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 21:10:31,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-08-21 21:10:31,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 113. [2020-08-21 21:10:31,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-21 21:10:31,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 130 transitions. [2020-08-21 21:10:31,837 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 130 transitions. Word has length 56 [2020-08-21 21:10:31,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:10:31,840 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 130 transitions. [2020-08-21 21:10:31,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:10:31,840 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 130 transitions. [2020-08-21 21:10:31,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 21:10:31,848 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:10:31,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:10:31,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:10:31,849 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:10:31,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:10:31,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1730792410, now seen corresponding path program 1 times [2020-08-21 21:10:31,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:10:31,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387592243] [2020-08-21 21:10:31,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:10:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:32,184 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:10:32,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:10:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:32,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:10:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:32,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:10:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:32,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:10:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:32,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:10:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:32,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:10:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:32,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 21:10:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:32,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:10:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:32,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 21:10:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:32,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 21:10:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:32,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:10:32,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387592243] [2020-08-21 21:10:32,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:10:32,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 21:10:32,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116494892] [2020-08-21 21:10:32,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 21:10:32,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:10:32,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 21:10:32,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:10:32,277 INFO L87 Difference]: Start difference. First operand 113 states and 130 transitions. Second operand 7 states. [2020-08-21 21:10:32,667 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:10:33,890 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:10:34,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:10:34,519 INFO L93 Difference]: Finished difference Result 313 states and 394 transitions. [2020-08-21 21:10:34,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 21:10:34,520 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-08-21 21:10:34,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:10:34,524 INFO L225 Difference]: With dead ends: 313 [2020-08-21 21:10:34,524 INFO L226 Difference]: Without dead ends: 228 [2020-08-21 21:10:34,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-08-21 21:10:34,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-08-21 21:10:34,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 182. [2020-08-21 21:10:34,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-21 21:10:34,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 211 transitions. [2020-08-21 21:10:34,576 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 211 transitions. Word has length 64 [2020-08-21 21:10:34,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:10:34,576 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 211 transitions. [2020-08-21 21:10:34,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 21:10:34,577 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 211 transitions. [2020-08-21 21:10:34,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 21:10:34,578 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:10:34,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:10:34,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:10:34,579 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:10:34,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:10:34,579 INFO L82 PathProgramCache]: Analyzing trace with hash 529777432, now seen corresponding path program 1 times [2020-08-21 21:10:34,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:10:34,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383849045] [2020-08-21 21:10:34,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:10:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:34,864 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:10:34,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:10:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:34,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:10:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:34,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:10:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:34,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:10:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:34,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:10:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:34,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:10:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:34,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 21:10:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:34,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:10:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:34,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:10:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:34,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:10:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:34,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-21 21:10:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:34,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 21:10:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:34,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:10:34,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383849045] [2020-08-21 21:10:34,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:10:34,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:10:34,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547349687] [2020-08-21 21:10:34,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:10:34,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:10:34,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:10:34,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:10:34,981 INFO L87 Difference]: Start difference. First operand 182 states and 211 transitions. Second operand 9 states. [2020-08-21 21:10:35,458 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:10:36,532 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:10:36,854 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:10:37,350 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:10:37,607 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:10:38,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:10:38,452 INFO L93 Difference]: Finished difference Result 537 states and 684 transitions. [2020-08-21 21:10:38,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 21:10:38,455 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-21 21:10:38,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:10:38,459 INFO L225 Difference]: With dead ends: 537 [2020-08-21 21:10:38,460 INFO L226 Difference]: Without dead ends: 383 [2020-08-21 21:10:38,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-21 21:10:38,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-08-21 21:10:38,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 312. [2020-08-21 21:10:38,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-08-21 21:10:38,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 362 transitions. [2020-08-21 21:10:38,535 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 362 transitions. Word has length 78 [2020-08-21 21:10:38,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:10:38,536 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 362 transitions. [2020-08-21 21:10:38,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:10:38,536 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 362 transitions. [2020-08-21 21:10:38,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-21 21:10:38,538 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:10:38,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:10:38,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:10:38,538 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:10:38,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:10:38,539 INFO L82 PathProgramCache]: Analyzing trace with hash 281843316, now seen corresponding path program 1 times [2020-08-21 21:10:38,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:10:38,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332201103] [2020-08-21 21:10:38,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:10:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:38,825 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:10:38,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:10:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:38,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:10:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:38,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:10:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:38,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:10:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:38,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:10:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:38,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:10:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:38,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 21:10:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:38,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 21:10:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:38,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:10:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:38,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:10:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:38,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:10:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:38,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-21 21:10:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:38,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 21:10:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:39,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:10:39,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332201103] [2020-08-21 21:10:39,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:10:39,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 21:10:39,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272932292] [2020-08-21 21:10:39,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 21:10:39,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:10:39,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 21:10:39,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 21:10:39,008 INFO L87 Difference]: Start difference. First operand 312 states and 362 transitions. Second operand 10 states. [2020-08-21 21:10:39,427 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:10:40,520 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:10:41,450 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:10:41,705 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:10:41,965 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:10:42,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:10:42,257 INFO L93 Difference]: Finished difference Result 702 states and 877 transitions. [2020-08-21 21:10:42,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 21:10:42,257 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2020-08-21 21:10:42,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:10:42,264 INFO L225 Difference]: With dead ends: 702 [2020-08-21 21:10:42,264 INFO L226 Difference]: Without dead ends: 418 [2020-08-21 21:10:42,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2020-08-21 21:10:42,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-08-21 21:10:42,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 311. [2020-08-21 21:10:42,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-08-21 21:10:42,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 359 transitions. [2020-08-21 21:10:42,357 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 359 transitions. Word has length 82 [2020-08-21 21:10:42,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:10:42,357 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 359 transitions. [2020-08-21 21:10:42,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 21:10:42,358 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 359 transitions. [2020-08-21 21:10:42,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 21:10:42,360 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:10:42,361 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:10:42,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 21:10:42,361 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:10:42,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:10:42,362 INFO L82 PathProgramCache]: Analyzing trace with hash 131138833, now seen corresponding path program 1 times [2020-08-21 21:10:42,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:10:42,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788186174] [2020-08-21 21:10:42,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:10:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:42,678 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:10:42,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:10:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:42,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:10:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:42,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:10:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:42,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:10:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:42,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:10:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:42,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:10:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:42,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 21:10:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:42,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 21:10:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:42,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:10:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:42,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:10:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:42,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:10:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:42,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:10:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:42,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:10:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:42,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:10:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:42,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 21:10:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:42,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 21:10:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:42,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 21:10:42,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788186174] [2020-08-21 21:10:42,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:10:42,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 21:10:42,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995668238] [2020-08-21 21:10:42,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 21:10:42,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:10:42,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 21:10:42,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 21:10:42,827 INFO L87 Difference]: Start difference. First operand 311 states and 359 transitions. Second operand 10 states. [2020-08-21 21:10:43,820 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:10:44,071 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 21:10:44,328 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:10:44,593 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:10:45,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:10:45,553 INFO L93 Difference]: Finished difference Result 709 states and 905 transitions. [2020-08-21 21:10:45,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 21:10:45,553 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 98 [2020-08-21 21:10:45,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:10:45,556 INFO L225 Difference]: With dead ends: 709 [2020-08-21 21:10:45,557 INFO L226 Difference]: Without dead ends: 426 [2020-08-21 21:10:45,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 21:10:45,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-08-21 21:10:45,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 321. [2020-08-21 21:10:45,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-08-21 21:10:45,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 369 transitions. [2020-08-21 21:10:45,621 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 369 transitions. Word has length 98 [2020-08-21 21:10:45,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:10:45,621 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 369 transitions. [2020-08-21 21:10:45,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 21:10:45,622 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 369 transitions. [2020-08-21 21:10:45,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 21:10:45,623 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:10:45,623 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:10:45,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 21:10:45,624 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:10:45,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:10:45,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1918249009, now seen corresponding path program 1 times [2020-08-21 21:10:45,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:10:45,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686279710] [2020-08-21 21:10:45,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:10:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:45,870 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:10:45,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:10:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:45,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:10:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:45,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:10:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:45,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:10:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:45,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:10:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:45,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:10:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:45,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 21:10:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:45,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 21:10:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:45,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:10:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:45,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:10:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:45,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:10:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:45,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:10:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:45,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:10:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:45,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:10:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:45,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 21:10:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:46,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 21:10:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:46,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 21:10:46,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686279710] [2020-08-21 21:10:46,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:10:46,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 21:10:46,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929951975] [2020-08-21 21:10:46,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 21:10:46,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:10:46,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 21:10:46,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 21:10:46,016 INFO L87 Difference]: Start difference. First operand 321 states and 369 transitions. Second operand 12 states. [2020-08-21 21:10:46,826 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:10:47,060 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:10:47,282 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:10:47,894 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:10:48,145 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:10:48,383 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:10:49,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:10:49,463 INFO L93 Difference]: Finished difference Result 729 states and 927 transitions. [2020-08-21 21:10:49,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 21:10:49,463 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2020-08-21 21:10:49,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:10:49,467 INFO L225 Difference]: With dead ends: 729 [2020-08-21 21:10:49,467 INFO L226 Difference]: Without dead ends: 436 [2020-08-21 21:10:49,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 21:10:49,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-08-21 21:10:49,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 329. [2020-08-21 21:10:49,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-08-21 21:10:49,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 377 transitions. [2020-08-21 21:10:49,531 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 377 transitions. Word has length 98 [2020-08-21 21:10:49,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:10:49,531 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 377 transitions. [2020-08-21 21:10:49,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 21:10:49,532 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 377 transitions. [2020-08-21 21:10:49,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 21:10:49,533 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:10:49,533 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:10:49,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 21:10:49,534 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:10:49,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:10:49,534 INFO L82 PathProgramCache]: Analyzing trace with hash -948667986, now seen corresponding path program 1 times [2020-08-21 21:10:49,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:10:49,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847940577] [2020-08-21 21:10:49,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:10:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:49,800 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:10:49,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:10:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:49,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:10:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:49,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:10:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:49,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:10:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:49,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:10:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:49,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:10:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:49,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 21:10:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:49,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 21:10:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:49,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:10:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:49,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:10:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:49,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:10:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:49,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:10:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:49,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:10:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:49,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:10:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:49,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 21:10:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:49,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 21:10:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:49,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 21:10:49,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847940577] [2020-08-21 21:10:49,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:10:49,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:10:49,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518578101] [2020-08-21 21:10:49,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:10:49,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:10:49,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:10:49,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:10:49,933 INFO L87 Difference]: Start difference. First operand 329 states and 377 transitions. Second operand 8 states. [2020-08-21 21:10:50,372 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:10:51,089 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:10:53,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:10:53,158 INFO L93 Difference]: Finished difference Result 1028 states and 1346 transitions. [2020-08-21 21:10:53,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-21 21:10:53,159 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-08-21 21:10:53,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:10:53,168 INFO L225 Difference]: With dead ends: 1028 [2020-08-21 21:10:53,168 INFO L226 Difference]: Without dead ends: 727 [2020-08-21 21:10:53,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2020-08-21 21:10:53,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2020-08-21 21:10:53,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 595. [2020-08-21 21:10:53,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2020-08-21 21:10:53,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 705 transitions. [2020-08-21 21:10:53,332 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 705 transitions. Word has length 98 [2020-08-21 21:10:53,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:10:53,333 INFO L479 AbstractCegarLoop]: Abstraction has 595 states and 705 transitions. [2020-08-21 21:10:53,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:10:53,334 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 705 transitions. [2020-08-21 21:10:53,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-21 21:10:53,338 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:10:53,338 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:10:53,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 21:10:53,339 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:10:53,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:10:53,340 INFO L82 PathProgramCache]: Analyzing trace with hash -944641720, now seen corresponding path program 1 times [2020-08-21 21:10:53,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:10:53,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987370990] [2020-08-21 21:10:53,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:10:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:53,651 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:10:53,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:10:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:53,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:10:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:53,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:10:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:53,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:10:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:53,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:10:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:53,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:10:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:53,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:10:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:53,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:10:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:53,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 21:10:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:53,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:10:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:53,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:10:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:53,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:10:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:53,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:10:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:53,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:10:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:53,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:10:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:53,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 21:10:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:53,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 21:10:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:10:53,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 21:10:53,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987370990] [2020-08-21 21:10:53,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:10:53,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 21:10:53,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274411237] [2020-08-21 21:10:53,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 21:10:53,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:10:53,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 21:10:53,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-21 21:10:54,000 INFO L87 Difference]: Start difference. First operand 595 states and 705 transitions. Second operand 18 states. [2020-08-21 21:10:54,886 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:10:55,217 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:10:55,475 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:10:55,728 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:10:56,437 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:10:57,266 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:10:57,573 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:10:57,839 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:10:58,083 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:10:58,403 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:10:58,679 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:10:59,264 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-21 21:10:59,820 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-21 21:11:01,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:11:01,448 INFO L93 Difference]: Finished difference Result 1262 states and 1575 transitions. [2020-08-21 21:11:01,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-21 21:11:01,449 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 102 [2020-08-21 21:11:01,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:11:01,453 INFO L225 Difference]: With dead ends: 1262 [2020-08-21 21:11:01,453 INFO L226 Difference]: Without dead ends: 695 [2020-08-21 21:11:01,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=428, Invalid=1734, Unknown=0, NotChecked=0, Total=2162 [2020-08-21 21:11:01,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-08-21 21:11:01,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 572. [2020-08-21 21:11:01,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2020-08-21 21:11:01,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 666 transitions. [2020-08-21 21:11:01,557 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 666 transitions. Word has length 102 [2020-08-21 21:11:01,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:11:01,558 INFO L479 AbstractCegarLoop]: Abstraction has 572 states and 666 transitions. [2020-08-21 21:11:01,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 21:11:01,558 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 666 transitions. [2020-08-21 21:11:01,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-21 21:11:01,560 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:11:01,561 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:11:01,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 21:11:01,561 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:11:01,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:11:01,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1654540536, now seen corresponding path program 1 times [2020-08-21 21:11:01,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:11:01,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118114793] [2020-08-21 21:11:01,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:11:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:11:01,827 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:11:01,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:11:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:11:01,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:11:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:11:01,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:11:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:11:01,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:11:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:11:01,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:11:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:11:01,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:11:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:11:01,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:11:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:11:01,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:11:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:11:01,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:11:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:11:01,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:11:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:11:01,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:11:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:11:01,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:11:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:11:01,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:11:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:11:01,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:11:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:11:01,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:11:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:11:01,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:11:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:11:01,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:11:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:11:01,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 21:11:01,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:11:01,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 21:11:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:11:01,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 21:11:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:11:01,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:11:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:11:01,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 21:11:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:11:01,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-21 21:11:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:11:02,011 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 21:11:02,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118114793] [2020-08-21 21:11:02,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:11:02,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 21:11:02,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722108372] [2020-08-21 21:11:02,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:11:02,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:11:02,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:11:02,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:11:02,014 INFO L87 Difference]: Start difference. First operand 572 states and 666 transitions. Second operand 9 states. [2020-08-21 21:11:02,392 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:11:04,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:11:04,194 INFO L93 Difference]: Finished difference Result 1091 states and 1387 transitions. [2020-08-21 21:11:04,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 21:11:04,195 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2020-08-21 21:11:04,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:11:04,203 INFO L225 Difference]: With dead ends: 1091 [2020-08-21 21:11:04,203 INFO L226 Difference]: Without dead ends: 1088 [2020-08-21 21:11:04,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2020-08-21 21:11:04,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2020-08-21 21:11:04,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 901. [2020-08-21 21:11:04,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-08-21 21:11:04,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1053 transitions. [2020-08-21 21:11:04,398 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1053 transitions. Word has length 137 [2020-08-21 21:11:04,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:11:04,399 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1053 transitions. [2020-08-21 21:11:04,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:11:04,399 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1053 transitions. [2020-08-21 21:11:04,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-08-21 21:11:04,403 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:11:04,403 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:11:04,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 21:11:04,404 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:11:04,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:11:04,405 INFO L82 PathProgramCache]: Analyzing trace with hash -402984640, now seen corresponding path program 1 times [2020-08-21 21:11:04,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:11:04,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527826996] [2020-08-21 21:11:04,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:11:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 21:11:04,477 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 21:11:04,477 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 21:11:04,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 21:11:04,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 09:11:04 BoogieIcfgContainer [2020-08-21 21:11:04,517 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 21:11:04,519 INFO L168 Benchmark]: Toolchain (without parser) took 41285.57 ms. Allocated memory was 138.9 MB in the beginning and 715.7 MB in the end (delta: 576.7 MB). Free memory was 100.8 MB in the beginning and 301.7 MB in the end (delta: -200.9 MB). Peak memory consumption was 375.8 MB. Max. memory is 7.1 GB. [2020-08-21 21:11:04,520 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 21:11:04,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 625.19 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 167.6 MB in the end (delta: -67.0 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-08-21 21:11:04,521 INFO L168 Benchmark]: Boogie Preprocessor took 86.51 ms. Allocated memory is still 202.4 MB. Free memory was 167.6 MB in the beginning and 162.5 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2020-08-21 21:11:04,522 INFO L168 Benchmark]: RCFGBuilder took 1190.50 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 162.5 MB in the beginning and 192.4 MB in the end (delta: -29.9 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. [2020-08-21 21:11:04,523 INFO L168 Benchmark]: TraceAbstraction took 39378.43 ms. Allocated memory was 234.4 MB in the beginning and 715.7 MB in the end (delta: 481.3 MB). Free memory was 192.4 MB in the beginning and 301.7 MB in the end (delta: -109.3 MB). Peak memory consumption was 372.0 MB. Max. memory is 7.1 GB. [2020-08-21 21:11:04,526 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 625.19 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 167.6 MB in the end (delta: -67.0 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.51 ms. Allocated memory is still 202.4 MB. Free memory was 167.6 MB in the beginning and 162.5 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1190.50 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 162.5 MB in the beginning and 192.4 MB in the end (delta: -29.9 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 39378.43 ms. Allocated memory was 234.4 MB in the beginning and 715.7 MB in the end (delta: 481.3 MB). Free memory was 192.4 MB in the beginning and 301.7 MB in the end (delta: -109.3 MB). Peak memory consumption was 372.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 830]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L43] int methAndRunningLastTime ; [L251] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L455] int pumpRunning = 0; [L456] int systemActive = 1; [L628] int waterLevel = 1; [L629] int methaneLevelCritical = 0; [L835] int cleanupTimeShifts = 4; [L909] int retValue_acc ; [L910] int tmp ; [L914] FCALL select_helpers() [L915] FCALL select_features() [L916] CALL, EXPR valid_product() [L817] int retValue_acc ; [L820] retValue_acc = 1 [L821] return (retValue_acc); [L916] RET, EXPR valid_product() [L916] tmp = valid_product() [L918] COND TRUE \read(tmp) [L920] FCALL setup() [L921] CALL runTest() [L902] CALL __utac_acc__Specification2_spec__1() [L48] methAndRunningLastTime = 0 [L902] RET __utac_acc__Specification2_spec__1() [L903] CALL test() [L724] int splverifierCounter ; [L725] int tmp ; [L726] int tmp___0 ; [L727] int tmp___1 ; [L728] int tmp___2 ; [L731] splverifierCounter = 0 [L733] COND TRUE 1 [L735] COND TRUE splverifierCounter < 4 [L741] tmp = __VERIFIER_nondet_int() [L743] COND TRUE \read(tmp) [L745] CALL waterRise() [L646] COND TRUE waterLevel < 2 [L647] waterLevel = waterLevel + 1 [L745] RET waterRise() [L751] tmp___0 = __VERIFIER_nondet_int() [L753] COND FALSE !(\read(tmp___0)) [L761] tmp___2 = __VERIFIER_nondet_int() [L763] COND TRUE \read(tmp___2) [L776] CALL timeShift() [L462] COND FALSE !(\read(pumpRunning)) [L469] COND TRUE \read(systemActive) [L471] CALL processEnvironment() [L491] int tmp ; [L494] COND TRUE ! pumpRunning [L496] CALL, EXPR isHighWaterLevel() [L606] int retValue_acc ; [L607] int tmp ; [L608] int tmp___0 ; [L612] CALL, EXPR isHighWaterSensorDry() [L708] int retValue_acc ; [L711] COND FALSE !(waterLevel < 2) [L715] retValue_acc = 0 [L716] return (retValue_acc); [L612] RET, EXPR isHighWaterSensorDry() [L612] tmp = isHighWaterSensorDry() [L614] COND FALSE !(\read(tmp)) [L617] tmp___0 = 1 [L619] retValue_acc = tmp___0 [L620] return (retValue_acc); [L496] RET, EXPR isHighWaterLevel() [L496] tmp = isHighWaterLevel() [L498] COND TRUE \read(tmp) [L500] CALL activatePump() [L525] int tmp ; [L529] CALL, EXPR isMethaneAlarm() [L550] int retValue_acc ; [L554] CALL, EXPR isMethaneLevelCritical() [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); [L554] RET, EXPR isMethaneLevelCritical() [L554] retValue_acc = isMethaneLevelCritical() [L556] return (retValue_acc); [L529] RET, EXPR isMethaneAlarm() [L529] tmp = isMethaneAlarm() [L531] COND FALSE !(\read(tmp)) [L535] CALL activatePump__wrappee__highWaterSensor() [L519] pumpRunning = 1 [L535] RET activatePump__wrappee__highWaterSensor() [L500] RET activatePump() [L471] RET processEnvironment() [L477] CALL __utac_acc__Specification2_spec__2() [L53] int tmp ; [L54] int tmp___0 ; [L58] CALL, EXPR isMethaneLevelCritical() [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); [L58] RET, EXPR isMethaneLevelCritical() [L58] tmp = isMethaneLevelCritical() [L60] COND FALSE !(\read(tmp)) [L76] methAndRunningLastTime = 0 [L477] RET __utac_acc__Specification2_spec__2() [L776] RET timeShift() [L733] COND TRUE 1 [L735] COND TRUE splverifierCounter < 4 [L741] tmp = __VERIFIER_nondet_int() [L743] COND FALSE !(\read(tmp)) [L751] tmp___0 = __VERIFIER_nondet_int() [L753] COND TRUE \read(tmp___0) [L755] CALL changeMethaneLevel() [L658] COND FALSE !(\read(methaneLevelCritical)) [L661] methaneLevelCritical = 1 [L755] RET changeMethaneLevel() [L761] tmp___2 = __VERIFIER_nondet_int() [L763] COND TRUE \read(tmp___2) [L776] CALL timeShift() [L462] COND TRUE \read(pumpRunning) [L464] CALL lowerWaterLevel() [L634] COND TRUE waterLevel > 0 [L635] waterLevel = waterLevel - 1 [L464] RET lowerWaterLevel() [L469] COND TRUE \read(systemActive) [L471] CALL processEnvironment() [L491] int tmp ; [L494] COND FALSE !(! pumpRunning) [L509] FCALL processEnvironment__wrappee__base() [L471] RET processEnvironment() [L477] CALL __utac_acc__Specification2_spec__2() [L53] int tmp ; [L54] int tmp___0 ; [L58] CALL, EXPR isMethaneLevelCritical() [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); [L58] RET, EXPR isMethaneLevelCritical() [L58] tmp = isMethaneLevelCritical() [L60] COND TRUE \read(tmp) [L62] CALL, EXPR isPumpRunning() [L561] int retValue_acc ; [L564] retValue_acc = pumpRunning [L565] return (retValue_acc); [L62] RET, EXPR isPumpRunning() [L62] tmp___0 = isPumpRunning() [L64] COND TRUE \read(tmp___0) [L65] COND FALSE !(\read(methAndRunningLastTime)) [L70] methAndRunningLastTime = 1 [L477] RET __utac_acc__Specification2_spec__2() [L776] RET timeShift() [L733] COND TRUE 1 [L735] COND TRUE splverifierCounter < 4 [L741] tmp = __VERIFIER_nondet_int() [L743] COND FALSE !(\read(tmp)) [L751] tmp___0 = __VERIFIER_nondet_int() [L753] COND FALSE !(\read(tmp___0)) [L761] tmp___2 = __VERIFIER_nondet_int() [L763] COND TRUE \read(tmp___2) [L776] CALL timeShift() [L462] COND TRUE \read(pumpRunning) [L464] CALL lowerWaterLevel() [L634] COND TRUE waterLevel > 0 [L635] waterLevel = waterLevel - 1 [L464] RET lowerWaterLevel() [L469] COND TRUE \read(systemActive) [L471] CALL processEnvironment() [L491] int tmp ; [L494] COND FALSE !(! pumpRunning) [L509] FCALL processEnvironment__wrappee__base() [L471] RET processEnvironment() [L477] CALL __utac_acc__Specification2_spec__2() [L53] int tmp ; [L54] int tmp___0 ; [L58] CALL, EXPR isMethaneLevelCritical() [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); [L58] RET, EXPR isMethaneLevelCritical() [L58] tmp = isMethaneLevelCritical() [L60] COND TRUE \read(tmp) [L62] CALL, EXPR isPumpRunning() [L561] int retValue_acc ; [L564] retValue_acc = pumpRunning [L565] return (retValue_acc); [L62] RET, EXPR isPumpRunning() [L62] tmp___0 = isPumpRunning() [L64] COND TRUE \read(tmp___0) [L65] COND TRUE \read(methAndRunningLastTime) [L67] CALL __automaton_fail() [L830] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 39.2s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 32.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1266 SDtfs, 3482 SDslu, 1733 SDs, 0 SdLazy, 7435 SolverSat, 2230 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 537 GetRequests, 339 SyntacticMatches, 3 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1014 ImplicationChecksByTransitivity, 14.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=901occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 969 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 1095 NumberOfCodeBlocks, 1095 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 905 ConstructedInterpolants, 0 QuantifiedInterpolants, 303920 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 38/42 InterpolantCoveringCapability, 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 incorrect! Received shutdown request...