/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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:57:17,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:57:17,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:57:17,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:57:17,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:57:17,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:57:17,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:57:17,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:57:17,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:57:17,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:57:17,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:57:17,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:57:17,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:57:17,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:57:17,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:57:17,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:57:17,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:57:17,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:57:17,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:57:17,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:57:17,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:57:17,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:57:17,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:57:17,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:57:17,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:57:17,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:57:17,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:57:17,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:57:17,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:57:17,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:57:17,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:57:17,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:57:17,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:57:17,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:57:17,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:57:17,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:57:17,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:57:17,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:57:17,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:57:17,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:57:17,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:57:17,866 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 17:57:17,904 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:57:17,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:57:17,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:57:17,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:57:17,907 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:57:17,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:57:17,907 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:57:17,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:57:17,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:57:17,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:57:17,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:57:17,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:57:17,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:57:17,910 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:57:17,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:57:17,910 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:57:17,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:57:17,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:57:17,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:57:17,911 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:57:17,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:57:17,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:57:17,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:57:17,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:57:17,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:57:17,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:57:17,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:57:17,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:57:17,913 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:57:17,913 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=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 17:57:18,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:57:18,214 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:57:18,217 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:57:18,218 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:57:18,218 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:57:18,219 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c [2020-08-21 17:57:18,283 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/881ddd78f/e8ff1ce13e834bbdb30e79539123eee2/FLAGbd6020623 [2020-08-21 17:57:18,811 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:57:18,812 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c [2020-08-21 17:57:18,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/881ddd78f/e8ff1ce13e834bbdb30e79539123eee2/FLAGbd6020623 [2020-08-21 17:57:19,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/881ddd78f/e8ff1ce13e834bbdb30e79539123eee2 [2020-08-21 17:57:19,104 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:57:19,106 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:57:19,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:57:19,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:57:19,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:57:19,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:57:19" (1/1) ... [2020-08-21 17:57:19,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2260ab44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:19, skipping insertion in model container [2020-08-21 17:57:19,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:57:19" (1/1) ... [2020-08-21 17:57:19,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:57:19,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:57:19,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:57:19,728 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:57:19,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:57:19,883 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:57:19,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:19 WrapperNode [2020-08-21 17:57:19,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:57:19,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:57:19,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:57:19,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:57:19,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:19" (1/1) ... [2020-08-21 17:57:19,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:19" (1/1) ... [2020-08-21 17:57:19,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:19" (1/1) ... [2020-08-21 17:57:19,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:19" (1/1) ... [2020-08-21 17:57:19,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:19" (1/1) ... [2020-08-21 17:57:19,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:19" (1/1) ... [2020-08-21 17:57:19,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:19" (1/1) ... [2020-08-21 17:57:19,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:57:19,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:57:19,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:57:19,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:57:19,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:19" (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 17:57:20,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:57:20,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:57:20,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 17:57:20,044 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 17:57:20,044 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 17:57:20,044 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 17:57:20,045 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 17:57:20,045 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 17:57:20,045 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 17:57:20,045 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 17:57:20,045 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 17:57:20,045 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:57:20,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 17:57:20,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 17:57:20,046 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 17:57:20,046 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 17:57:20,046 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 17:57:20,047 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 17:57:20,047 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 17:57:20,047 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 17:57:20,047 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 17:57:20,047 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 17:57:20,047 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 17:57:20,047 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 17:57:20,048 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 17:57:20,048 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 17:57:20,048 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 17:57:20,048 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 17:57:20,048 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 17:57:20,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 17:57:20,049 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 17:57:20,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 17:57:20,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 17:57:20,049 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 17:57:20,049 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 17:57:20,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 17:57:20,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 17:57:20,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 17:57:20,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 17:57:20,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 17:57:20,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 17:57:20,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 17:57:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:57:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:57:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 17:57:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 17:57:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 17:57:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 17:57:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 17:57:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 17:57:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 17:57:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 17:57:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 17:57:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 17:57:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 17:57:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 17:57:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 17:57:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 17:57:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 17:57:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:57:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 17:57:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 17:57:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 17:57:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 17:57:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 17:57:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 17:57:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 17:57:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 17:57:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 17:57:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:57:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 17:57:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 17:57:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 17:57:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 17:57:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 17:57:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 17:57:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 17:57:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 17:57:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 17:57:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 17:57:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:57:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:57:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 17:57:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:57:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:57:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:57:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:57:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 17:57:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:57:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 17:57:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 17:57:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:57:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 17:57:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 17:57:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 17:57:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:57:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 17:57:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:57:21,097 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:57:21,098 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 17:57:21,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:57:21 BoogieIcfgContainer [2020-08-21 17:57:21,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:57:21,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:57:21,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:57:21,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:57:21,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:57:19" (1/3) ... [2020-08-21 17:57:21,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e54ad42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:57:21, skipping insertion in model container [2020-08-21 17:57:21,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:57:19" (2/3) ... [2020-08-21 17:57:21,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e54ad42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:57:21, skipping insertion in model container [2020-08-21 17:57:21,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:57:21" (3/3) ... [2020-08-21 17:57:21,112 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product50.cil.c [2020-08-21 17:57:21,123 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:57:21,131 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:57:21,145 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:57:21,170 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:57:21,170 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:57:21,170 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:57:21,171 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:57:21,171 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:57:21,171 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:57:21,171 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:57:21,172 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:57:21,195 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-08-21 17:57:21,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 17:57:21,206 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:21,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:57:21,208 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:21,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:21,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1742083297, now seen corresponding path program 1 times [2020-08-21 17:57:21,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:21,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107341720] [2020-08-21 17:57:21,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:21,929 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:21,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:21,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:21,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:21,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:21,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:22,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:22,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 17:57:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:22,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 17:57:22,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:22,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:57:22,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107341720] [2020-08-21 17:57:22,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:22,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:57:22,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107914755] [2020-08-21 17:57:22,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:57:22,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:22,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:57:22,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:57:22,058 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 4 states. [2020-08-21 17:57:23,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:23,249 INFO L93 Difference]: Finished difference Result 306 states and 397 transitions. [2020-08-21 17:57:23,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 17:57:23,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 17:57:23,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:23,266 INFO L225 Difference]: With dead ends: 306 [2020-08-21 17:57:23,266 INFO L226 Difference]: Without dead ends: 170 [2020-08-21 17:57:23,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:57:23,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-21 17:57:23,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 137. [2020-08-21 17:57:23,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-21 17:57:23,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2020-08-21 17:57:23,365 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 51 [2020-08-21 17:57:23,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:23,366 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2020-08-21 17:57:23,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:57:23,366 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2020-08-21 17:57:23,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 17:57:23,369 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:23,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:57:23,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:57:23,370 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:23,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:23,371 INFO L82 PathProgramCache]: Analyzing trace with hash 604742129, now seen corresponding path program 1 times [2020-08-21 17:57:23,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:23,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29987053] [2020-08-21 17:57:23,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:23,694 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:23,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:23,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:23,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:23,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:23,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:23,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:23,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:57:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:23,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:57:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:57:23,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29987053] [2020-08-21 17:57:23,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:23,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 17:57:23,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798677431] [2020-08-21 17:57:23,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 17:57:23,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:23,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 17:57:23,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:57:23,755 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand 5 states. [2020-08-21 17:57:24,282 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:25,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:25,183 INFO L93 Difference]: Finished difference Result 247 states and 304 transitions. [2020-08-21 17:57:25,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 17:57:25,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 17:57:25,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:25,186 INFO L225 Difference]: With dead ends: 247 [2020-08-21 17:57:25,187 INFO L226 Difference]: Without dead ends: 160 [2020-08-21 17:57:25,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:57:25,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-21 17:57:25,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-08-21 17:57:25,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-21 17:57:25,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2020-08-21 17:57:25,231 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 52 [2020-08-21 17:57:25,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:25,232 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2020-08-21 17:57:25,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 17:57:25,232 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2020-08-21 17:57:25,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 17:57:25,234 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:25,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:57:25,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:57:25,235 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:25,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:25,235 INFO L82 PathProgramCache]: Analyzing trace with hash -185652476, now seen corresponding path program 1 times [2020-08-21 17:57:25,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:25,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427284750] [2020-08-21 17:57:25,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:25,583 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:25,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:25,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:25,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:25,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:25,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:25,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:25,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 17:57:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:25,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 17:57:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:25,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:57:25,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427284750] [2020-08-21 17:57:25,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:25,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:57:25,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427577988] [2020-08-21 17:57:25,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:57:25,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:25,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:57:25,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:57:25,755 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand 9 states. [2020-08-21 17:57:26,122 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:57:26,431 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:26,692 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:26,918 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:28,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:28,168 INFO L93 Difference]: Finished difference Result 260 states and 323 transitions. [2020-08-21 17:57:28,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 17:57:28,168 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-21 17:57:28,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:28,171 INFO L225 Difference]: With dead ends: 260 [2020-08-21 17:57:28,171 INFO L226 Difference]: Without dead ends: 160 [2020-08-21 17:57:28,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 17:57:28,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-21 17:57:28,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-08-21 17:57:28,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-21 17:57:28,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2020-08-21 17:57:28,207 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 57 [2020-08-21 17:57:28,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:28,208 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2020-08-21 17:57:28,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:57:28,208 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2020-08-21 17:57:28,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 17:57:28,210 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:28,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:57:28,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:57:28,211 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:28,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:28,211 INFO L82 PathProgramCache]: Analyzing trace with hash -285076691, now seen corresponding path program 1 times [2020-08-21 17:57:28,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:28,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518605121] [2020-08-21 17:57:28,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:28,533 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:28,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:28,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:28,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:28,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:28,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:28,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:28,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 17:57:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:28,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:28,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:28,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 17:57:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:28,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 17:57:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:28,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:57:28,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518605121] [2020-08-21 17:57:28,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:28,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 17:57:28,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728488408] [2020-08-21 17:57:28,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 17:57:28,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:28,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 17:57:28,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:57:28,630 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand 7 states. [2020-08-21 17:57:28,996 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:57:30,259 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:31,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:31,022 INFO L93 Difference]: Finished difference Result 359 states and 451 transitions. [2020-08-21 17:57:31,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 17:57:31,023 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-08-21 17:57:31,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:31,027 INFO L225 Difference]: With dead ends: 359 [2020-08-21 17:57:31,027 INFO L226 Difference]: Without dead ends: 259 [2020-08-21 17:57:31,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 17:57:31,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-21 17:57:31,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 210. [2020-08-21 17:57:31,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-08-21 17:57:31,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 240 transitions. [2020-08-21 17:57:31,090 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 240 transitions. Word has length 70 [2020-08-21 17:57:31,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:31,091 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 240 transitions. [2020-08-21 17:57:31,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 17:57:31,091 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 240 transitions. [2020-08-21 17:57:31,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 17:57:31,093 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:31,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:57:31,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:57:31,093 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:31,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:31,094 INFO L82 PathProgramCache]: Analyzing trace with hash -791027315, now seen corresponding path program 1 times [2020-08-21 17:57:31,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:31,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424377205] [2020-08-21 17:57:31,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:31,371 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:31,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:31,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:31,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:31,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:31,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:31,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:31,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 17:57:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:31,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:31,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:31,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:57:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:31,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:57:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:31,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 17:57:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:31,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 17:57:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:31,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:57:31,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424377205] [2020-08-21 17:57:31,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:31,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:57:31,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781247229] [2020-08-21 17:57:31,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:57:31,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:31,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:57:31,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:57:31,466 INFO L87 Difference]: Start difference. First operand 210 states and 240 transitions. Second operand 9 states. [2020-08-21 17:57:31,865 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:57:33,046 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:33,326 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:33,564 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:33,800 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:57:34,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:34,992 INFO L93 Difference]: Finished difference Result 626 states and 786 transitions. [2020-08-21 17:57:34,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 17:57:34,993 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-21 17:57:34,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:34,997 INFO L225 Difference]: With dead ends: 626 [2020-08-21 17:57:34,997 INFO L226 Difference]: Without dead ends: 444 [2020-08-21 17:57:34,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-21 17:57:35,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-08-21 17:57:35,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 368. [2020-08-21 17:57:35,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-21 17:57:35,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 420 transitions. [2020-08-21 17:57:35,085 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 420 transitions. Word has length 84 [2020-08-21 17:57:35,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:35,086 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 420 transitions. [2020-08-21 17:57:35,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:57:35,086 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 420 transitions. [2020-08-21 17:57:35,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 17:57:35,087 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:35,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:57:35,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:57:35,088 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:35,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:35,088 INFO L82 PathProgramCache]: Analyzing trace with hash 474237417, now seen corresponding path program 1 times [2020-08-21 17:57:35,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:35,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893571087] [2020-08-21 17:57:35,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:35,349 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:35,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:35,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:35,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:35,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:35,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:35,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:35,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:57:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:35,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:57:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:35,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:35,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:35,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:57:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:35,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:57:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:35,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 17:57:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:35,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 17:57:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:35,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:57:35,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893571087] [2020-08-21 17:57:35,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:35,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:57:35,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031107439] [2020-08-21 17:57:35,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:57:35,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:35,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:57:35,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:57:35,541 INFO L87 Difference]: Start difference. First operand 368 states and 420 transitions. Second operand 10 states. [2020-08-21 17:57:36,020 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:57:37,178 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:37,412 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:57:37,651 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:37,901 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:38,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:38,827 INFO L93 Difference]: Finished difference Result 822 states and 1015 transitions. [2020-08-21 17:57:38,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 17:57:38,828 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-21 17:57:38,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:38,833 INFO L225 Difference]: With dead ends: 822 [2020-08-21 17:57:38,833 INFO L226 Difference]: Without dead ends: 482 [2020-08-21 17:57:38,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-21 17:57:38,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-08-21 17:57:38,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 367. [2020-08-21 17:57:38,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-08-21 17:57:38,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 417 transitions. [2020-08-21 17:57:38,905 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 417 transitions. Word has length 88 [2020-08-21 17:57:38,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:38,905 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 417 transitions. [2020-08-21 17:57:38,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:57:38,906 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 417 transitions. [2020-08-21 17:57:38,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 17:57:38,908 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:38,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:57:38,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 17:57:38,908 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:38,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:38,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1710786942, now seen corresponding path program 1 times [2020-08-21 17:57:38,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:38,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299276398] [2020-08-21 17:57:38,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:39,146 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:39,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:39,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:39,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:39,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:39,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:39,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:39,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:57:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:39,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:57:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:39,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:39,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:39,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:57:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:39,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:57:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:39,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 17:57:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:39,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 17:57:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:39,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:57:39,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299276398] [2020-08-21 17:57:39,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:39,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:57:39,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691870657] [2020-08-21 17:57:39,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:57:39,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:39,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:57:39,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:57:39,315 INFO L87 Difference]: Start difference. First operand 367 states and 417 transitions. Second operand 10 states. [2020-08-21 17:57:40,475 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:40,729 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 17:57:40,978 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:41,239 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:42,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:42,370 INFO L93 Difference]: Finished difference Result 825 states and 1024 transitions. [2020-08-21 17:57:42,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 17:57:42,375 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-21 17:57:42,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:42,378 INFO L225 Difference]: With dead ends: 825 [2020-08-21 17:57:42,378 INFO L226 Difference]: Without dead ends: 486 [2020-08-21 17:57:42,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 17:57:42,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-08-21 17:57:42,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 377. [2020-08-21 17:57:42,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-08-21 17:57:42,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 427 transitions. [2020-08-21 17:57:42,461 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 427 transitions. Word has length 89 [2020-08-21 17:57:42,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:42,461 INFO L479 AbstractCegarLoop]: Abstraction has 377 states and 427 transitions. [2020-08-21 17:57:42,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:57:42,462 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 427 transitions. [2020-08-21 17:57:42,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 17:57:42,463 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:42,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:57:42,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 17:57:42,464 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:42,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:42,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1009187068, now seen corresponding path program 1 times [2020-08-21 17:57:42,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:42,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462498813] [2020-08-21 17:57:42,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:42,734 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:42,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:42,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:42,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:42,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:42,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:42,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:42,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:57:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:42,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:57:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:42,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:42,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:42,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:57:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:42,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:57:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:42,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 17:57:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:42,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 17:57:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:42,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:57:42,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462498813] [2020-08-21 17:57:42,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:42,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 17:57:42,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203005579] [2020-08-21 17:57:42,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 17:57:42,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:42,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 17:57:42,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:57:42,897 INFO L87 Difference]: Start difference. First operand 377 states and 427 transitions. Second operand 12 states. [2020-08-21 17:57:43,744 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:43,981 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:44,205 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:44,890 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:45,147 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:45,390 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:46,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:46,739 INFO L93 Difference]: Finished difference Result 849 states and 1066 transitions. [2020-08-21 17:57:46,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 17:57:46,740 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2020-08-21 17:57:46,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:46,743 INFO L225 Difference]: With dead ends: 849 [2020-08-21 17:57:46,743 INFO L226 Difference]: Without dead ends: 500 [2020-08-21 17:57:46,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 17:57:46,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-08-21 17:57:46,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 385. [2020-08-21 17:57:46,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-21 17:57:46,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 435 transitions. [2020-08-21 17:57:46,820 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 435 transitions. Word has length 89 [2020-08-21 17:57:46,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:46,821 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 435 transitions. [2020-08-21 17:57:46,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 17:57:46,821 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 435 transitions. [2020-08-21 17:57:46,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 17:57:46,823 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:46,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:57:46,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 17:57:46,823 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:46,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:46,824 INFO L82 PathProgramCache]: Analyzing trace with hash 716293829, now seen corresponding path program 1 times [2020-08-21 17:57:46,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:46,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298420799] [2020-08-21 17:57:46,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,084 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:47,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:57:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:57:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:57:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:57:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 17:57:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 17:57:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:47,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:57:47,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298420799] [2020-08-21 17:57:47,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:47,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:57:47,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411990102] [2020-08-21 17:57:47,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:57:47,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:47,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:57:47,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:57:47,218 INFO L87 Difference]: Start difference. First operand 385 states and 435 transitions. Second operand 8 states. [2020-08-21 17:57:47,679 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:57:48,249 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:57:50,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:50,735 INFO L93 Difference]: Finished difference Result 1197 states and 1553 transitions. [2020-08-21 17:57:50,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 17:57:50,736 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-08-21 17:57:50,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:50,742 INFO L225 Difference]: With dead ends: 1197 [2020-08-21 17:57:50,742 INFO L226 Difference]: Without dead ends: 840 [2020-08-21 17:57:50,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-21 17:57:50,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2020-08-21 17:57:50,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 695. [2020-08-21 17:57:50,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-08-21 17:57:50,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 813 transitions. [2020-08-21 17:57:50,872 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 813 transitions. Word has length 89 [2020-08-21 17:57:50,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:50,873 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 813 transitions. [2020-08-21 17:57:50,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:57:50,873 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 813 transitions. [2020-08-21 17:57:50,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 17:57:50,875 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:50,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:57:50,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 17:57:50,875 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:50,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:50,876 INFO L82 PathProgramCache]: Analyzing trace with hash -7624597, now seen corresponding path program 1 times [2020-08-21 17:57:50,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:50,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290637191] [2020-08-21 17:57:50,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:51,148 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:51,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:51,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:51,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:51,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:51,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:51,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:51,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:57:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:51,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:57:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:51,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 17:57:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:51,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:51,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:51,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:57:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:51,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:57:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:51,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 17:57:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:51,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 17:57:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:51,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:57:51,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290637191] [2020-08-21 17:57:51,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:57:51,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:57:51,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354810260] [2020-08-21 17:57:51,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:57:51,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:51,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:57:51,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:57:51,298 INFO L87 Difference]: Start difference. First operand 695 states and 813 transitions. Second operand 8 states. [2020-08-21 17:57:52,003 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:57:54,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:54,823 INFO L93 Difference]: Finished difference Result 1377 states and 1783 transitions. [2020-08-21 17:57:54,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 17:57:54,824 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-21 17:57:54,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:54,834 INFO L225 Difference]: With dead ends: 1377 [2020-08-21 17:57:54,834 INFO L226 Difference]: Without dead ends: 1374 [2020-08-21 17:57:54,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-21 17:57:54,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2020-08-21 17:57:55,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1147. [2020-08-21 17:57:55,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1147 states. [2020-08-21 17:57:55,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1356 transitions. [2020-08-21 17:57:55,071 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1356 transitions. Word has length 93 [2020-08-21 17:57:55,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:57:55,072 INFO L479 AbstractCegarLoop]: Abstraction has 1147 states and 1356 transitions. [2020-08-21 17:57:55,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:57:55,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1356 transitions. [2020-08-21 17:57:55,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 17:57:55,079 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:57:55,079 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-08-21 17:57:55,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 17:57:55,080 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:57:55,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:57:55,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1116069495, now seen corresponding path program 1 times [2020-08-21 17:57:55,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:57:55,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166705041] [2020-08-21 17:57:55,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:57:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,461 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:57:55,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:57:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:57:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:57:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:57:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:57:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:57:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:57:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:57:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:57:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:57:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:57:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:57:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:57:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 17:57:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 17:57:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:57:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:57:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:57:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-21 17:57:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 17:57:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:57:55,727 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-21 17:57:55,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166705041] [2020-08-21 17:57:55,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:57:55,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 17:57:55,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131244836] [2020-08-21 17:57:55,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 17:57:55,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:57:55,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 17:57:55,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-21 17:57:55,733 INFO L87 Difference]: Start difference. First operand 1147 states and 1356 transitions. Second operand 13 states. [2020-08-21 17:57:56,390 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:57:56,638 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:56,867 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:57:57,834 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:57:59,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:57:59,790 INFO L93 Difference]: Finished difference Result 2071 states and 2568 transitions. [2020-08-21 17:57:59,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 17:57:59,791 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-21 17:57:59,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:57:59,801 INFO L225 Difference]: With dead ends: 2071 [2020-08-21 17:57:59,802 INFO L226 Difference]: Without dead ends: 1084 [2020-08-21 17:57:59,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 17:57:59,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2020-08-21 17:58:00,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 948. [2020-08-21 17:58:00,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2020-08-21 17:58:00,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1106 transitions. [2020-08-21 17:58:00,047 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1106 transitions. Word has length 152 [2020-08-21 17:58:00,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:58:00,047 INFO L479 AbstractCegarLoop]: Abstraction has 948 states and 1106 transitions. [2020-08-21 17:58:00,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 17:58:00,048 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1106 transitions. [2020-08-21 17:58:00,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 17:58:00,051 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:58:00,051 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-08-21 17:58:00,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 17:58:00,052 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:58:00,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:58:00,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1764550393, now seen corresponding path program 1 times [2020-08-21 17:58:00,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:58:00,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121174831] [2020-08-21 17:58:00,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:58:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,408 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:58:00,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:58:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:58:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:58:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:58:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:58:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:58:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:58:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:58:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:58:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:58:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:58:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 17:58:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 17:58:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 17:58:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:58:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-21 17:58:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 17:58:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:00,764 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-21 17:58:00,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121174831] [2020-08-21 17:58:00,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:58:00,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 17:58:00,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863646729] [2020-08-21 17:58:00,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 17:58:00,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:58:00,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 17:58:00,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-08-21 17:58:00,768 INFO L87 Difference]: Start difference. First operand 948 states and 1106 transitions. Second operand 15 states. [2020-08-21 17:58:01,377 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:58:02,507 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:58:04,788 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2020-08-21 17:58:05,278 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-21 17:58:05,775 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-21 17:58:06,780 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-21 17:58:07,059 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:58:07,335 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:58:07,585 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:58:09,425 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2020-08-21 17:58:10,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:58:10,436 INFO L93 Difference]: Finished difference Result 3031 states and 3876 transitions. [2020-08-21 17:58:10,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-08-21 17:58:10,437 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 154 [2020-08-21 17:58:10,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:58:10,451 INFO L225 Difference]: With dead ends: 3031 [2020-08-21 17:58:10,452 INFO L226 Difference]: Without dead ends: 2243 [2020-08-21 17:58:10,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1401 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=889, Invalid=3401, Unknown=0, NotChecked=0, Total=4290 [2020-08-21 17:58:10,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2020-08-21 17:58:10,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 1920. [2020-08-21 17:58:10,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-08-21 17:58:10,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2261 transitions. [2020-08-21 17:58:10,940 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2261 transitions. Word has length 154 [2020-08-21 17:58:10,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:58:10,942 INFO L479 AbstractCegarLoop]: Abstraction has 1920 states and 2261 transitions. [2020-08-21 17:58:10,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 17:58:10,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2261 transitions. [2020-08-21 17:58:10,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 17:58:10,945 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:58:10,946 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-08-21 17:58:10,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 17:58:10,946 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:58:10,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:58:10,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1836936951, now seen corresponding path program 1 times [2020-08-21 17:58:10,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:58:10,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88427049] [2020-08-21 17:58:10,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:58:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,251 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:58:11,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:58:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:58:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:58:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:58:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:58:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:58:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:58:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:58:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:58:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:58:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:58:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 17:58:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 17:58:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 17:58:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:58:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:58:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:58:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-21 17:58:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 17:58:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:11,545 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-21 17:58:11,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88427049] [2020-08-21 17:58:11,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:58:11,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 17:58:11,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411596320] [2020-08-21 17:58:11,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 17:58:11,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:58:11,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 17:58:11,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-21 17:58:11,548 INFO L87 Difference]: Start difference. First operand 1920 states and 2261 transitions. Second operand 15 states. [2020-08-21 17:58:12,161 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:58:12,406 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:58:12,644 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:58:14,481 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:58:14,730 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:58:14,971 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:58:15,207 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:58:15,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:58:15,725 INFO L93 Difference]: Finished difference Result 2728 states and 3289 transitions. [2020-08-21 17:58:15,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 17:58:15,731 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 154 [2020-08-21 17:58:15,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:58:15,733 INFO L225 Difference]: With dead ends: 2728 [2020-08-21 17:58:15,733 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 17:58:15,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=242, Invalid=750, Unknown=0, NotChecked=0, Total=992 [2020-08-21 17:58:15,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 17:58:15,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 17:58:15,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 17:58:15,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 17:58:15,741 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 154 [2020-08-21 17:58:15,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:58:15,741 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 17:58:15,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 17:58:15,741 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 17:58:15,741 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 17:58:15,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 17:58:15,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.