/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=WIDEST --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_spec5_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:05:52,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:05:52,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:05:52,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:05:52,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:05:52,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:05:52,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:05:52,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:05:52,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:05:52,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:05:52,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:05:52,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:05:52,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:05:52,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:05:52,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:05:52,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:05:52,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:05:52,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:05:52,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:05:52,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:05:52,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:05:52,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:05:52,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:05:52,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:05:52,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:05:52,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:05:52,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:05:52,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:05:52,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:05:52,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:05:52,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:05:52,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:05:52,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:05:52,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:05:52,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:05:52,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:05:52,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:05:52,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:05:52,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:05:52,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:05:52,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:05:52,863 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 22:05:52,885 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:05:52,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:05:52,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:05:52,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:05:52,887 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:05:52,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:05:52,887 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:05:52,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:05:52,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:05:52,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:05:52,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:05:52,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:05:52,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:05:52,889 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:05:52,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:05:52,889 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:05:52,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:05:52,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:05:52,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:05:52,890 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:05:52,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:05:52,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:05:52,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:05:52,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:05:52,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:05:52,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:05:52,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:05:52,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:05:52,892 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:05:52,892 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=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:05:53,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:05:53,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:05:53,192 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:05:53,193 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:05:53,194 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:05:53,194 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c [2020-08-21 22:05:53,255 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c15802223/2789d61cd4814e9f858a53bd883e631c/FLAG24246d74b [2020-08-21 22:05:53,725 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:05:53,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c [2020-08-21 22:05:53,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c15802223/2789d61cd4814e9f858a53bd883e631c/FLAG24246d74b [2020-08-21 22:05:54,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c15802223/2789d61cd4814e9f858a53bd883e631c [2020-08-21 22:05:54,032 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:05:54,034 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:05:54,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:05:54,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:05:54,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:05:54,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:05:54" (1/1) ... [2020-08-21 22:05:54,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43be0364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:05:54, skipping insertion in model container [2020-08-21 22:05:54,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:05:54" (1/1) ... [2020-08-21 22:05:54,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:05:54,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:05:54,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:05:54,497 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:05:54,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:05:54,660 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:05:54,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:05:54 WrapperNode [2020-08-21 22:05:54,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:05:54,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:05:54,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:05:54,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:05:54,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:05:54" (1/1) ... [2020-08-21 22:05:54,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:05:54" (1/1) ... [2020-08-21 22:05:54,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:05:54" (1/1) ... [2020-08-21 22:05:54,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:05:54" (1/1) ... [2020-08-21 22:05:54,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:05:54" (1/1) ... [2020-08-21 22:05:54,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:05:54" (1/1) ... [2020-08-21 22:05:54,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:05:54" (1/1) ... [2020-08-21 22:05:54,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:05:54,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:05:54,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:05:54,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:05:54,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:05:54" (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 22:05:54,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:05:54,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:05:54,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 22:05:54,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 22:05:54,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 22:05:54,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 22:05:54,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 22:05:54,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 22:05:54,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 22:05:54,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 22:05:54,836 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 22:05:54,836 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 22:05:54,836 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 22:05:54,837 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 22:05:54,837 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 22:05:54,838 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 22:05:54,838 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 22:05:54,838 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 22:05:54,838 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 22:05:54,838 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 22:05:54,838 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 22:05:54,838 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 22:05:54,839 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 22:05:54,839 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 22:05:54,839 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 22:05:54,840 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 22:05:54,840 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 22:05:54,840 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 22:05:54,840 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 22:05:54,841 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 22:05:54,841 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 22:05:54,841 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 22:05:54,841 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 22:05:54,841 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 22:05:54,841 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 22:05:54,841 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:05:54,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 22:05:54,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 22:05:54,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 22:05:54,842 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 22:05:54,842 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 22:05:54,842 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 22:05:54,842 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 22:05:54,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:05:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:05:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 22:05:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 22:05:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:05:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:05:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 22:05:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:05:54,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:05:54,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:05:54,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:05:54,847 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 22:05:54,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:05:54,848 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 22:05:54,848 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 22:05:54,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:05:54,848 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 22:05:54,848 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 22:05:54,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:05:54,849 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 22:05:54,849 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 22:05:54,849 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 22:05:54,849 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 22:05:54,849 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 22:05:54,849 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 22:05:54,849 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 22:05:54,850 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 22:05:54,850 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 22:05:54,851 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 22:05:54,851 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 22:05:54,851 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 22:05:54,852 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 22:05:54,852 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 22:05:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 22:05:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 22:05:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 22:05:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 22:05:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 22:05:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 22:05:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 22:05:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 22:05:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 22:05:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 22:05:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 22:05:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 22:05:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 22:05:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 22:05:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 22:05:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 22:05:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 22:05:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 22:05:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 22:05:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:05:54,856 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 22:05:54,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:05:54,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 22:05:54,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:05:55,836 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:05:55,836 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 22:05:55,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:05:55 BoogieIcfgContainer [2020-08-21 22:05:55,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:05:55,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:05:55,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:05:55,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:05:55,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:05:54" (1/3) ... [2020-08-21 22:05:55,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55dcc4ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:05:55, skipping insertion in model container [2020-08-21 22:05:55,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:05:54" (2/3) ... [2020-08-21 22:05:55,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55dcc4ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:05:55, skipping insertion in model container [2020-08-21 22:05:55,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:05:55" (3/3) ... [2020-08-21 22:05:55,850 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product48.cil.c [2020-08-21 22:05:55,859 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:05:55,867 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:05:55,881 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:05:55,906 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:05:55,906 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:05:55,906 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:05:55,906 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:05:55,907 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:05:55,907 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:05:55,907 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:05:55,907 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:05:55,930 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-08-21 22:05:55,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 22:05:55,941 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:05:55,942 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] [2020-08-21 22:05:55,942 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:05:55,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:05:55,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1391539258, now seen corresponding path program 1 times [2020-08-21 22:05:55,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:05:55,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594579225] [2020-08-21 22:05:55,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:05:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:05:56,612 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:05:56,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:05:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:05:56,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:05:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:05:56,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:05:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:05:56,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:05:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:05:56,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:05:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:05:56,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:05:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:05:56,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:05:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:05:56,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:05:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:05:56,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:05:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:05:56,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 22:05:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:05:56,747 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 22:05:56,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594579225] [2020-08-21 22:05:56,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:05:56,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:05:56,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90295708] [2020-08-21 22:05:56,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:05:56,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:05:56,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:05:56,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:05:56,773 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 4 states. [2020-08-21 22:05:58,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:05:58,065 INFO L93 Difference]: Finished difference Result 340 states and 436 transitions. [2020-08-21 22:05:58,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 22:05:58,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 22:05:58,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:05:58,084 INFO L225 Difference]: With dead ends: 340 [2020-08-21 22:05:58,084 INFO L226 Difference]: Without dead ends: 188 [2020-08-21 22:05:58,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:05:58,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-21 22:05:58,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 153. [2020-08-21 22:05:58,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-21 22:05:58,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 180 transitions. [2020-08-21 22:05:58,189 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 180 transitions. Word has length 59 [2020-08-21 22:05:58,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:05:58,190 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 180 transitions. [2020-08-21 22:05:58,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:05:58,190 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 180 transitions. [2020-08-21 22:05:58,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 22:05:58,196 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:05:58,196 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] [2020-08-21 22:05:58,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:05:58,196 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:05:58,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:05:58,197 INFO L82 PathProgramCache]: Analyzing trace with hash 404948371, now seen corresponding path program 1 times [2020-08-21 22:05:58,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:05:58,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100964305] [2020-08-21 22:05:58,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:05:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:05:58,516 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:05:58,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:05:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:05:58,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:05:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:05:58,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:05:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:05:58,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:05:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:05:58,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:05:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:05:58,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:05:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:05:58,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:05:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:05:58,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:05:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:05:58,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 22:05:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:05:58,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 22:05:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:05:58,569 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 22:05:58,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100964305] [2020-08-21 22:05:58,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:05:58,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:05:58,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746081229] [2020-08-21 22:05:58,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:05:58,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:05:58,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:05:58,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:05:58,573 INFO L87 Difference]: Start difference. First operand 153 states and 180 transitions. Second operand 5 states. [2020-08-21 22:05:59,032 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:06:00,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:06:00,044 INFO L93 Difference]: Finished difference Result 275 states and 336 transitions. [2020-08-21 22:06:00,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 22:06:00,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 22:06:00,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:06:00,049 INFO L225 Difference]: With dead ends: 275 [2020-08-21 22:06:00,049 INFO L226 Difference]: Without dead ends: 178 [2020-08-21 22:06:00,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 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 22:06:00,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-21 22:06:00,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 144. [2020-08-21 22:06:00,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-21 22:06:00,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2020-08-21 22:06:00,089 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 60 [2020-08-21 22:06:00,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:06:00,090 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2020-08-21 22:06:00,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:06:00,090 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2020-08-21 22:06:00,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 22:06:00,092 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:06:00,093 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] [2020-08-21 22:06:00,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:06:00,093 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:06:00,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:06:00,094 INFO L82 PathProgramCache]: Analyzing trace with hash 539093391, now seen corresponding path program 1 times [2020-08-21 22:06:00,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:06:00,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614293705] [2020-08-21 22:06:00,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:06:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:00,399 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:06:00,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:00,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:06:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:00,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:06:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:00,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:06:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:00,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:06:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:00,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:06:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:00,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:06:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:00,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:00,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 22:06:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:00,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 22:06:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:00,531 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 22:06:00,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614293705] [2020-08-21 22:06:00,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:06:00,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:06:00,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983228206] [2020-08-21 22:06:00,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:06:00,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:06:00,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:06:00,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:06:00,534 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 9 states. [2020-08-21 22:06:00,902 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:06:01,210 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:06:01,445 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:06:01,670 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:06:02,521 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:06:04,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:06:04,397 INFO L93 Difference]: Finished difference Result 485 states and 599 transitions. [2020-08-21 22:06:04,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 22:06:04,398 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-21 22:06:04,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:06:04,403 INFO L225 Difference]: With dead ends: 485 [2020-08-21 22:06:04,403 INFO L226 Difference]: Without dead ends: 369 [2020-08-21 22:06:04,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 22:06:04,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-08-21 22:06:04,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 304. [2020-08-21 22:06:04,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-21 22:06:04,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 368 transitions. [2020-08-21 22:06:04,490 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 368 transitions. Word has length 65 [2020-08-21 22:06:04,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:06:04,491 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 368 transitions. [2020-08-21 22:06:04,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:06:04,491 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 368 transitions. [2020-08-21 22:06:04,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 22:06:04,493 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:06:04,494 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] [2020-08-21 22:06:04,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:06:04,494 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:06:04,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:06:04,495 INFO L82 PathProgramCache]: Analyzing trace with hash -652418830, now seen corresponding path program 1 times [2020-08-21 22:06:04,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:06:04,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151147921] [2020-08-21 22:06:04,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:06:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:04,771 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:06:04,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:04,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:06:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:04,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:06:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:04,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:06:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:04,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:06:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:04,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:06:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:04,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:06:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:04,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:06:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:04,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:04,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 22:06:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:04,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 22:06:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:04,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 22:06:04,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151147921] [2020-08-21 22:06:04,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:06:04,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:06:04,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021743034] [2020-08-21 22:06:04,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:06:04,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:06:04,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:06:04,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:06:04,893 INFO L87 Difference]: Start difference. First operand 304 states and 368 transitions. Second operand 9 states. [2020-08-21 22:06:05,259 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:06:05,961 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:06:06,854 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:06:07,075 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:06:07,357 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:06:07,619 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:06:08,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:06:08,423 INFO L93 Difference]: Finished difference Result 795 states and 1028 transitions. [2020-08-21 22:06:08,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 22:06:08,424 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-21 22:06:08,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:06:08,430 INFO L225 Difference]: With dead ends: 795 [2020-08-21 22:06:08,430 INFO L226 Difference]: Without dead ends: 519 [2020-08-21 22:06:08,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 22:06:08,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-08-21 22:06:08,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 451. [2020-08-21 22:06:08,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2020-08-21 22:06:08,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 537 transitions. [2020-08-21 22:06:08,523 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 537 transitions. Word has length 70 [2020-08-21 22:06:08,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:06:08,524 INFO L479 AbstractCegarLoop]: Abstraction has 451 states and 537 transitions. [2020-08-21 22:06:08,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:06:08,524 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 537 transitions. [2020-08-21 22:06:08,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-21 22:06:08,528 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:06:08,528 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, 1, 1, 1, 1, 1, 1] [2020-08-21 22:06:08,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:06:08,529 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:06:08,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:06:08,529 INFO L82 PathProgramCache]: Analyzing trace with hash -918633805, now seen corresponding path program 1 times [2020-08-21 22:06:08,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:06:08,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676272705] [2020-08-21 22:06:08,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:06:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:08,855 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:06:08,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:08,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:06:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:08,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:06:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:08,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:06:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:08,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:06:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:08,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:06:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:08,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:06:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:08,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:08,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 22:06:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:08,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:09,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:09,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:09,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:06:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:09,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:09,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:09,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:06:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:09,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 22:06:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:09,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 22:06:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:09,104 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 22:06:09,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676272705] [2020-08-21 22:06:09,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:06:09,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:06:09,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098412621] [2020-08-21 22:06:09,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:06:09,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:06:09,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:06:09,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:06:09,108 INFO L87 Difference]: Start difference. First operand 451 states and 537 transitions. Second operand 9 states. [2020-08-21 22:06:09,502 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:06:10,544 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:06:10,785 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:06:11,027 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:06:11,287 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:06:12,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:06:12,477 INFO L93 Difference]: Finished difference Result 1362 states and 1793 transitions. [2020-08-21 22:06:12,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 22:06:12,481 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-08-21 22:06:12,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:06:12,489 INFO L225 Difference]: With dead ends: 1362 [2020-08-21 22:06:12,489 INFO L226 Difference]: Without dead ends: 939 [2020-08-21 22:06:12,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-21 22:06:12,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-08-21 22:06:12,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 811. [2020-08-21 22:06:12,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2020-08-21 22:06:12,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 969 transitions. [2020-08-21 22:06:12,690 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 969 transitions. Word has length 108 [2020-08-21 22:06:12,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:06:12,692 INFO L479 AbstractCegarLoop]: Abstraction has 811 states and 969 transitions. [2020-08-21 22:06:12,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:06:12,692 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 969 transitions. [2020-08-21 22:06:12,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-21 22:06:12,700 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:06:12,701 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, 1, 1, 1, 1, 1, 1] [2020-08-21 22:06:12,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:06:12,701 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:06:12,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:06:12,701 INFO L82 PathProgramCache]: Analyzing trace with hash -678093676, now seen corresponding path program 1 times [2020-08-21 22:06:12,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:06:12,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800715636] [2020-08-21 22:06:12,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:06:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:12,998 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:06:12,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:13,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:06:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:13,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:06:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:13,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:06:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:13,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:06:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:13,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:06:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:13,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:06:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:13,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:13,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 22:06:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:13,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:13,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:13,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:13,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:06:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:13,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:13,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:13,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:06:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:13,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 22:06:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:13,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 22:06:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:13,179 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 22:06:13,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800715636] [2020-08-21 22:06:13,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:06:13,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:06:13,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7340307] [2020-08-21 22:06:13,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:06:13,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:06:13,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:06:13,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:06:13,184 INFO L87 Difference]: Start difference. First operand 811 states and 969 transitions. Second operand 9 states. [2020-08-21 22:06:14,266 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:06:14,492 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:06:14,762 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:06:15,008 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:06:16,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:06:16,014 INFO L93 Difference]: Finished difference Result 1729 states and 2208 transitions. [2020-08-21 22:06:16,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 22:06:16,015 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-08-21 22:06:16,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:06:16,023 INFO L225 Difference]: With dead ends: 1729 [2020-08-21 22:06:16,023 INFO L226 Difference]: Without dead ends: 946 [2020-08-21 22:06:16,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 22:06:16,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2020-08-21 22:06:16,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 831. [2020-08-21 22:06:16,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2020-08-21 22:06:16,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 989 transitions. [2020-08-21 22:06:16,187 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 989 transitions. Word has length 108 [2020-08-21 22:06:16,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:06:16,188 INFO L479 AbstractCegarLoop]: Abstraction has 831 states and 989 transitions. [2020-08-21 22:06:16,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:06:16,188 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 989 transitions. [2020-08-21 22:06:16,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-21 22:06:16,191 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:06:16,191 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, 1, 1, 1, 1, 1, 1] [2020-08-21 22:06:16,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:06:16,192 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:06:16,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:06:16,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1250179026, now seen corresponding path program 1 times [2020-08-21 22:06:16,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:06:16,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657211353] [2020-08-21 22:06:16,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:06:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:16,471 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:06:16,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:16,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:06:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:16,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:06:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:16,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:06:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:16,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:06:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:16,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:06:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:16,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:06:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:16,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:16,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 22:06:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:16,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:16,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:16,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:16,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:06:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:16,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:16,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:16,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:06:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:16,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 22:06:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:16,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 22:06:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:16,617 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 22:06:16,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657211353] [2020-08-21 22:06:16,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:06:16,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 22:06:16,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497512471] [2020-08-21 22:06:16,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 22:06:16,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:06:16,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 22:06:16,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 22:06:16,623 INFO L87 Difference]: Start difference. First operand 831 states and 989 transitions. Second operand 11 states. [2020-08-21 22:06:17,135 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:06:17,364 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:06:17,584 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:06:18,349 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:06:18,732 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:06:19,036 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:06:19,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:06:19,988 INFO L93 Difference]: Finished difference Result 1544 states and 1934 transitions. [2020-08-21 22:06:19,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 22:06:19,991 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-21 22:06:19,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:06:19,996 INFO L225 Difference]: With dead ends: 1544 [2020-08-21 22:06:19,996 INFO L226 Difference]: Without dead ends: 741 [2020-08-21 22:06:20,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 22:06:20,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-08-21 22:06:20,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-08-21 22:06:20,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-08-21 22:06:20,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 775 transitions. [2020-08-21 22:06:20,111 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 775 transitions. Word has length 108 [2020-08-21 22:06:20,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:06:20,111 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 775 transitions. [2020-08-21 22:06:20,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 22:06:20,111 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 775 transitions. [2020-08-21 22:06:20,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-21 22:06:20,115 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:06:20,115 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:06:20,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 22:06:20,115 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:06:20,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:06:20,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1890897259, now seen corresponding path program 1 times [2020-08-21 22:06:20,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:06:20,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166474492] [2020-08-21 22:06:20,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:06:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:20,463 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:06:20,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:20,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:06:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:20,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:06:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:20,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:06:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:20,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:06:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:20,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:06:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:20,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:06:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:20,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 22:06:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:20,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:20,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 22:06:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:20,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:20,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:20,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:20,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:06:20,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:20,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:20,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:20,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:06:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:20,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-21 22:06:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:20,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-21 22:06:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:20,624 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 22:06:20,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166474492] [2020-08-21 22:06:20,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:06:20,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 22:06:20,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586829050] [2020-08-21 22:06:20,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 22:06:20,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:06:20,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 22:06:20,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:06:20,627 INFO L87 Difference]: Start difference. First operand 664 states and 775 transitions. Second operand 12 states. [2020-08-21 22:06:21,032 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:06:21,635 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:06:22,359 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:06:22,718 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:06:22,975 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:06:23,250 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:06:23,504 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:06:25,496 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:06:25,760 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:06:26,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:06:26,370 INFO L93 Difference]: Finished difference Result 1955 states and 2469 transitions. [2020-08-21 22:06:26,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 22:06:26,370 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-08-21 22:06:26,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:06:26,381 INFO L225 Difference]: With dead ends: 1955 [2020-08-21 22:06:26,381 INFO L226 Difference]: Without dead ends: 1505 [2020-08-21 22:06:26,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 22:06:26,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2020-08-21 22:06:26,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1367. [2020-08-21 22:06:26,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1367 states. [2020-08-21 22:06:26,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 1597 transitions. [2020-08-21 22:06:26,685 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 1597 transitions. Word has length 112 [2020-08-21 22:06:26,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:06:26,686 INFO L479 AbstractCegarLoop]: Abstraction has 1367 states and 1597 transitions. [2020-08-21 22:06:26,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 22:06:26,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 1597 transitions. [2020-08-21 22:06:26,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-21 22:06:26,690 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:06:26,691 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:06:26,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 22:06:26,691 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:06:26,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:06:26,692 INFO L82 PathProgramCache]: Analyzing trace with hash 828062466, now seen corresponding path program 1 times [2020-08-21 22:06:26,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:06:26,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170479240] [2020-08-21 22:06:26,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:06:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,087 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:06:27,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:06:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:06:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:06:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:06:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:06:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:06:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 22:06:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:06:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:06:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:06:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 22:06:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-21 22:06:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-21 22:06:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-21 22:06:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 22:06:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 22:06:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-21 22:06:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:27,343 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-21 22:06:27,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170479240] [2020-08-21 22:06:27,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:06:27,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 22:06:27,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098946900] [2020-08-21 22:06:27,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 22:06:27,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:06:27,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 22:06:27,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 22:06:27,345 INFO L87 Difference]: Start difference. First operand 1367 states and 1597 transitions. Second operand 16 states. [2020-08-21 22:06:27,885 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:06:28,207 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 22:06:28,458 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 22:06:28,703 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 22:06:29,379 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:06:29,683 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:06:30,018 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 22:06:30,301 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 22:06:31,615 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:06:32,202 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:06:32,472 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:06:32,776 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:06:33,297 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:06:33,675 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:06:34,031 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 22:06:34,787 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:06:35,086 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 22:06:35,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:06:35,834 INFO L93 Difference]: Finished difference Result 3011 states and 3644 transitions. [2020-08-21 22:06:35,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-21 22:06:35,835 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 172 [2020-08-21 22:06:35,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:06:35,845 INFO L225 Difference]: With dead ends: 3011 [2020-08-21 22:06:35,846 INFO L226 Difference]: Without dead ends: 1852 [2020-08-21 22:06:35,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=605, Invalid=2257, Unknown=0, NotChecked=0, Total=2862 [2020-08-21 22:06:35,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2020-08-21 22:06:36,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1641. [2020-08-21 22:06:36,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1641 states. [2020-08-21 22:06:36,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 1901 transitions. [2020-08-21 22:06:36,182 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 1901 transitions. Word has length 172 [2020-08-21 22:06:36,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:06:36,183 INFO L479 AbstractCegarLoop]: Abstraction has 1641 states and 1901 transitions. [2020-08-21 22:06:36,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 22:06:36,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 1901 transitions. [2020-08-21 22:06:36,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-08-21 22:06:36,199 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:06:36,200 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-21 22:06:36,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 22:06:36,200 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:06:36,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:06:36,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1205235534, now seen corresponding path program 1 times [2020-08-21 22:06:36,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:06:36,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448111973] [2020-08-21 22:06:36,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:06:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,572 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:06:36,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:06:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:06:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:06:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:06:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:06:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:06:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 22:06:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:06:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:06:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:06:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 22:06:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 22:06:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:06:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 22:06:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 22:06:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:06:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-08-21 22:06:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:06:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 22:06:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 22:06:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 22:06:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:36,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:37,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-21 22:06:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:37,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-21 22:06:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:37,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:37,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:37,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:06:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:37,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:37,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-21 22:06:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:37,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-21 22:06:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:37,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:37,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-08-21 22:06:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:37,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:37,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:37,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:37,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:06:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:37,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:37,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:37,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:06:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:37,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-08-21 22:06:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:37,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-08-21 22:06:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:37,248 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 107 proven. 50 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2020-08-21 22:06:37,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448111973] [2020-08-21 22:06:37,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:06:37,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 22:06:37,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819841412] [2020-08-21 22:06:37,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 22:06:37,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:06:37,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 22:06:37,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-08-21 22:06:37,255 INFO L87 Difference]: Start difference. First operand 1641 states and 1901 transitions. Second operand 17 states. [2020-08-21 22:06:38,920 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:06:39,181 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:06:39,432 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:06:39,664 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:06:39,899 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:06:40,759 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:06:41,262 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 22:06:41,707 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 22:06:42,202 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:06:45,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:06:45,272 INFO L93 Difference]: Finished difference Result 4937 states and 6137 transitions. [2020-08-21 22:06:45,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-21 22:06:45,273 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 343 [2020-08-21 22:06:45,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:06:45,290 INFO L225 Difference]: With dead ends: 4937 [2020-08-21 22:06:45,290 INFO L226 Difference]: Without dead ends: 3077 [2020-08-21 22:06:45,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=595, Invalid=2597, Unknown=0, NotChecked=0, Total=3192 [2020-08-21 22:06:45,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2020-08-21 22:06:45,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 2419. [2020-08-21 22:06:45,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2419 states. [2020-08-21 22:06:45,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2419 states to 2419 states and 2813 transitions. [2020-08-21 22:06:45,786 INFO L78 Accepts]: Start accepts. Automaton has 2419 states and 2813 transitions. Word has length 343 [2020-08-21 22:06:45,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:06:45,787 INFO L479 AbstractCegarLoop]: Abstraction has 2419 states and 2813 transitions. [2020-08-21 22:06:45,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 22:06:45,787 INFO L276 IsEmpty]: Start isEmpty. Operand 2419 states and 2813 transitions. [2020-08-21 22:06:45,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-08-21 22:06:45,798 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:06:45,798 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 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] [2020-08-21 22:06:45,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 22:06:45,798 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:06:45,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:06:45,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1846391666, now seen corresponding path program 1 times [2020-08-21 22:06:45,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:06:45,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347258500] [2020-08-21 22:06:45,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:06:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,088 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:06:46,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:06:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:06:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:06:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:06:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:06:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:06:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 22:06:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:06:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:06:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:06:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 22:06:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 22:06:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:06:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 22:06:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 22:06:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:06:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 22:06:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-21 22:06:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:06:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 22:06:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 22:06:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 22:06:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 22:06:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:06:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-21 22:06:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:06:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:06:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:06:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:06:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-21 22:06:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-21 22:06:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:06:46,628 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 90 proven. 38 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2020-08-21 22:06:46,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347258500] [2020-08-21 22:06:46,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:06:46,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 22:06:46,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234373436] [2020-08-21 22:06:46,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 22:06:46,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:06:46,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 22:06:46,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 22:06:46,631 INFO L87 Difference]: Start difference. First operand 2419 states and 2813 transitions. Second operand 16 states. [2020-08-21 22:06:47,604 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:06:47,911 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:06:48,159 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:06:48,392 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:06:49,067 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:06:50,122 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:06:50,360 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:06:50,744 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:06:51,386 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:06:52,142 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:06:52,382 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191