/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:34:30,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:34:30,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:34:30,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:34:30,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:34:30,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:34:30,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:34:30,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:34:30,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:34:30,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:34:30,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:34:30,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:34:30,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:34:30,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:34:30,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:34:30,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:34:30,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:34:30,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:34:30,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:34:30,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:34:30,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:34:30,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:34:30,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:34:30,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:34:30,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:34:30,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:34:30,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:34:30,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:34:30,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:34:30,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:34:30,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:34:30,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:34:30,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:34:30,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:34:30,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:34:30,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:34:30,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:34:30,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:34:30,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:34:30,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:34:30,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:34:30,820 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 [2020-08-19 02:34:30,860 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:34:30,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:34:30,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:34:30,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:34:30,862 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:34:30,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:34:30,863 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:34:30,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:34:30,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:34:30,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:34:30,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:34:30,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:34:30,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:34:30,864 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:34:30,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:34:30,864 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:34:30,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:34:30,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:34:30,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:34:30,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:34:30,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:34:30,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:34:30,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:34:30,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:34:30,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:34:30,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:34:30,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:34:30,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:34:30,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:34:30,867 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=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:34:31,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:34:31,215 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:34:31,219 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:34:31,220 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:34:31,220 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:34:31,221 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c [2020-08-19 02:34:31,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4709e38e/29e3eac511d8425a91f2e1798bf7b3ff/FLAGa22838e20 [2020-08-19 02:34:31,831 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:34:31,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c [2020-08-19 02:34:31,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4709e38e/29e3eac511d8425a91f2e1798bf7b3ff/FLAGa22838e20 [2020-08-19 02:34:32,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4709e38e/29e3eac511d8425a91f2e1798bf7b3ff [2020-08-19 02:34:32,142 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:34:32,144 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:34:32,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:34:32,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:34:32,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:34:32,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:34:32" (1/1) ... [2020-08-19 02:34:32,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f4d4318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:32, skipping insertion in model container [2020-08-19 02:34:32,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:34:32" (1/1) ... [2020-08-19 02:34:32,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:34:32,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:34:32,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:34:32,748 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:34:32,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:34:32,873 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:34:32,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:32 WrapperNode [2020-08-19 02:34:32,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:34:32,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:34:32,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:34:32,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:34:32,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:32" (1/1) ... [2020-08-19 02:34:32,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:32" (1/1) ... [2020-08-19 02:34:32,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:32" (1/1) ... [2020-08-19 02:34:32,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:32" (1/1) ... [2020-08-19 02:34:32,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:32" (1/1) ... [2020-08-19 02:34:32,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:32" (1/1) ... [2020-08-19 02:34:32,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:32" (1/1) ... [2020-08-19 02:34:32,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:34:32,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:34:32,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:34:32,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:34:32,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:32" (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 [2020-08-19 02:34:33,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:34:33,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:34:33,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 02:34:33,032 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 02:34:33,033 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 02:34:33,033 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 02:34:33,033 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 02:34:33,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 02:34:33,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 02:34:33,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 02:34:33,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 02:34:33,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 02:34:33,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 02:34:33,035 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 02:34:33,035 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 02:34:33,036 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 02:34:33,036 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 02:34:33,037 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 02:34:33,037 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 02:34:33,037 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 02:34:33,038 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 02:34:33,038 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 02:34:33,038 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 02:34:33,038 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 02:34:33,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:34:33,040 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 02:34:33,041 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 02:34:33,041 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 02:34:33,041 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 02:34:33,041 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 02:34:33,042 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 02:34:33,042 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 02:34:33,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 02:34:33,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 02:34:33,042 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 02:34:33,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 02:34:33,042 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 02:34:33,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 02:34:33,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 02:34:33,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 02:34:33,043 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 02:34:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:34:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:34:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 02:34:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 02:34:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 02:34:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 02:34:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 02:34:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 02:34:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:34:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:34:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 02:34:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:34:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:34:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:34:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:34:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 02:34:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:34:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 02:34:33,046 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 02:34:33,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:34:33,046 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 02:34:33,046 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 02:34:33,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:34:33,046 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 02:34:33,046 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 02:34:33,047 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 02:34:33,047 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 02:34:33,047 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 02:34:33,047 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 02:34:33,047 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 02:34:33,047 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 02:34:33,047 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 02:34:33,047 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 02:34:33,048 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 02:34:33,048 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 02:34:33,048 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 02:34:33,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 02:34:33,048 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 02:34:33,048 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 02:34:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:34:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 02:34:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 02:34:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 02:34:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 02:34:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 02:34:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 02:34:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 02:34:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 02:34:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 02:34:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 02:34:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 02:34:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 02:34:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:34:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:34:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:34:34,103 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:34:34,103 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 02:34:34,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:34:34 BoogieIcfgContainer [2020-08-19 02:34:34,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:34:34,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:34:34,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:34:34,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:34:34,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:34:32" (1/3) ... [2020-08-19 02:34:34,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57198092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:34:34, skipping insertion in model container [2020-08-19 02:34:34,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:32" (2/3) ... [2020-08-19 02:34:34,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57198092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:34:34, skipping insertion in model container [2020-08-19 02:34:34,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:34:34" (3/3) ... [2020-08-19 02:34:34,118 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product46.cil.c [2020-08-19 02:34:34,131 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:34:34,139 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:34:34,154 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:34:34,180 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:34:34,180 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:34:34,181 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:34:34,181 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:34:34,181 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:34:34,181 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:34:34,181 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:34:34,182 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:34:34,205 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-19 02:34:34,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 02:34:34,216 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:34,217 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] [2020-08-19 02:34:34,218 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:34,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:34,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1550424879, now seen corresponding path program 1 times [2020-08-19 02:34:34,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:34,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998597761] [2020-08-19 02:34:34,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:34,931 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:34,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:35,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:35,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:35,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:35,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:35,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:35,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:34:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:35,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 02:34:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:35,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:35,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998597761] [2020-08-19 02:34:35,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:35,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:34:35,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17748011] [2020-08-19 02:34:35,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:34:35,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:35,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:34:35,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:34:35,090 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 4 states. [2020-08-19 02:34:36,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:36,306 INFO L93 Difference]: Finished difference Result 312 states and 407 transitions. [2020-08-19 02:34:36,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 02:34:36,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 02:34:36,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:36,334 INFO L225 Difference]: With dead ends: 312 [2020-08-19 02:34:36,334 INFO L226 Difference]: Without dead ends: 174 [2020-08-19 02:34:36,342 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 [2020-08-19 02:34:36,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-19 02:34:36,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 139. [2020-08-19 02:34:36,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-19 02:34:36,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-08-19 02:34:36,448 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 51 [2020-08-19 02:34:36,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:36,448 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-08-19 02:34:36,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:34:36,449 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-08-19 02:34:36,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 02:34:36,452 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:36,453 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] [2020-08-19 02:34:36,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:34:36,453 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:36,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:36,454 INFO L82 PathProgramCache]: Analyzing trace with hash 2147140265, now seen corresponding path program 1 times [2020-08-19 02:34:36,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:36,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743057555] [2020-08-19 02:34:36,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:36,839 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:36,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:36,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:36,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:36,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:36,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:36,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:36,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:34:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:36,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:34:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:36,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:36,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743057555] [2020-08-19 02:34:36,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:36,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:34:36,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381466215] [2020-08-19 02:34:36,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:34:36,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:36,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:34:36,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:34:36,897 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 5 states. [2020-08-19 02:34:37,325 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:38,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:38,362 INFO L93 Difference]: Finished difference Result 253 states and 314 transitions. [2020-08-19 02:34:38,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 02:34:38,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 02:34:38,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:38,366 INFO L225 Difference]: With dead ends: 253 [2020-08-19 02:34:38,367 INFO L226 Difference]: Without dead ends: 164 [2020-08-19 02:34:38,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:34:38,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-19 02:34:38,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2020-08-19 02:34:38,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-19 02:34:38,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2020-08-19 02:34:38,421 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 52 [2020-08-19 02:34:38,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:38,421 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2020-08-19 02:34:38,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:34:38,421 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2020-08-19 02:34:38,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 02:34:38,424 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:38,424 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] [2020-08-19 02:34:38,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:34:38,424 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:38,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:38,425 INFO L82 PathProgramCache]: Analyzing trace with hash 871775649, now seen corresponding path program 1 times [2020-08-19 02:34:38,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:38,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692743134] [2020-08-19 02:34:38,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:38,754 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:38,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:38,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:38,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:38,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:38,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:38,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:38,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 02:34:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:38,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:34:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:38,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:38,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692743134] [2020-08-19 02:34:38,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:38,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:34:38,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202432248] [2020-08-19 02:34:38,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:34:38,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:38,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:34:38,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:34:38,864 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand 9 states. [2020-08-19 02:34:39,250 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:39,575 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:39,820 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:40,055 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:41,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:41,477 INFO L93 Difference]: Finished difference Result 266 states and 333 transitions. [2020-08-19 02:34:41,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 02:34:41,477 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-19 02:34:41,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:41,480 INFO L225 Difference]: With dead ends: 266 [2020-08-19 02:34:41,480 INFO L226 Difference]: Without dead ends: 164 [2020-08-19 02:34:41,482 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 [2020-08-19 02:34:41,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-19 02:34:41,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2020-08-19 02:34:41,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-19 02:34:41,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-08-19 02:34:41,555 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 57 [2020-08-19 02:34:41,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:41,557 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-08-19 02:34:41,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:34:41,557 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-08-19 02:34:41,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 02:34:41,566 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:41,566 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] [2020-08-19 02:34:41,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:34:41,567 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:41,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:41,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1442711131, now seen corresponding path program 1 times [2020-08-19 02:34:41,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:41,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789162392] [2020-08-19 02:34:41,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,939 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:41,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:42,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:42,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:34:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:42,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:42,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:42,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 02:34:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:42,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 02:34:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:42,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789162392] [2020-08-19 02:34:42,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:42,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 02:34:42,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199870095] [2020-08-19 02:34:42,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 02:34:42,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:42,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 02:34:42,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:34:42,063 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 7 states. [2020-08-19 02:34:42,353 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:43,638 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:44,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:44,405 INFO L93 Difference]: Finished difference Result 370 states and 466 transitions. [2020-08-19 02:34:44,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 02:34:44,405 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-08-19 02:34:44,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:44,409 INFO L225 Difference]: With dead ends: 370 [2020-08-19 02:34:44,409 INFO L226 Difference]: Without dead ends: 268 [2020-08-19 02:34:44,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-19 02:34:44,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-08-19 02:34:44,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 219. [2020-08-19 02:34:44,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-08-19 02:34:44,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 251 transitions. [2020-08-19 02:34:44,464 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 251 transitions. Word has length 70 [2020-08-19 02:34:44,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:44,464 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 251 transitions. [2020-08-19 02:34:44,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 02:34:44,465 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 251 transitions. [2020-08-19 02:34:44,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 02:34:44,466 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:44,466 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] [2020-08-19 02:34:44,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:34:44,467 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:44,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:44,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1583652076, now seen corresponding path program 1 times [2020-08-19 02:34:44,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:44,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651753577] [2020-08-19 02:34:44,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,763 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:44,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:34:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 02:34:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 02:34:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:44,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651753577] [2020-08-19 02:34:44,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:44,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:34:44,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846233900] [2020-08-19 02:34:44,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:34:44,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:44,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:34:44,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:34:44,908 INFO L87 Difference]: Start difference. First operand 219 states and 251 transitions. Second operand 9 states. [2020-08-19 02:34:45,364 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:46,446 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:46,797 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:47,406 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:47,655 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:48,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:48,792 INFO L93 Difference]: Finished difference Result 653 states and 819 transitions. [2020-08-19 02:34:48,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 02:34:48,793 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-19 02:34:48,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:48,798 INFO L225 Difference]: With dead ends: 653 [2020-08-19 02:34:48,798 INFO L226 Difference]: Without dead ends: 462 [2020-08-19 02:34:48,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 02:34:48,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-08-19 02:34:48,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 386. [2020-08-19 02:34:48,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-08-19 02:34:48,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 442 transitions. [2020-08-19 02:34:48,885 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 442 transitions. Word has length 84 [2020-08-19 02:34:48,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:48,886 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 442 transitions. [2020-08-19 02:34:48,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:34:48,886 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 442 transitions. [2020-08-19 02:34:48,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 02:34:48,888 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:48,888 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] [2020-08-19 02:34:48,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:34:48,889 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:48,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:48,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1422526648, now seen corresponding path program 1 times [2020-08-19 02:34:48,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:48,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918436182] [2020-08-19 02:34:48,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,181 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:49,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:34:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:34:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 02:34:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 02:34:49,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:49,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:49,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918436182] [2020-08-19 02:34:49,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:49,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 02:34:49,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536705791] [2020-08-19 02:34:49,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:34:49,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:49,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:34:49,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:34:49,333 INFO L87 Difference]: Start difference. First operand 386 states and 442 transitions. Second operand 10 states. [2020-08-19 02:34:49,703 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:51,030 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:52,129 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:52,367 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:52,631 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:53,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:53,046 INFO L93 Difference]: Finished difference Result 858 states and 1059 transitions. [2020-08-19 02:34:53,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 02:34:53,047 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-19 02:34:53,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:53,052 INFO L225 Difference]: With dead ends: 858 [2020-08-19 02:34:53,052 INFO L226 Difference]: Without dead ends: 500 [2020-08-19 02:34:53,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-19 02:34:53,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-08-19 02:34:53,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 385. [2020-08-19 02:34:53,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-19 02:34:53,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 439 transitions. [2020-08-19 02:34:53,131 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 439 transitions. Word has length 88 [2020-08-19 02:34:53,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:53,132 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 439 transitions. [2020-08-19 02:34:53,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:34:53,132 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 439 transitions. [2020-08-19 02:34:53,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-19 02:34:53,134 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:53,134 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:53,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:34:53,135 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:53,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:53,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1956386739, now seen corresponding path program 1 times [2020-08-19 02:34:53,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:53,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050421074] [2020-08-19 02:34:53,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,414 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:53,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:53,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:34:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:34:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 02:34:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 02:34:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:53,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:34:53,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050421074] [2020-08-19 02:34:53,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:53,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 02:34:53,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570176243] [2020-08-19 02:34:53,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:34:53,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:53,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:34:53,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:34:53,603 INFO L87 Difference]: Start difference. First operand 385 states and 439 transitions. Second operand 10 states. [2020-08-19 02:34:54,504 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:54,724 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:34:54,968 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:55,198 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:56,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:56,412 INFO L93 Difference]: Finished difference Result 865 states and 1088 transitions. [2020-08-19 02:34:56,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 02:34:56,417 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-08-19 02:34:56,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:56,421 INFO L225 Difference]: With dead ends: 865 [2020-08-19 02:34:56,421 INFO L226 Difference]: Without dead ends: 508 [2020-08-19 02:34:56,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:34:56,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-08-19 02:34:56,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 395. [2020-08-19 02:34:56,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-08-19 02:34:56,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 449 transitions. [2020-08-19 02:34:56,501 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 449 transitions. Word has length 104 [2020-08-19 02:34:56,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:56,501 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 449 transitions. [2020-08-19 02:34:56,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:34:56,502 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 449 transitions. [2020-08-19 02:34:56,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-19 02:34:56,504 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:56,504 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:56,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:34:56,504 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:56,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:56,505 INFO L82 PathProgramCache]: Analyzing trace with hash -28114037, now seen corresponding path program 1 times [2020-08-19 02:34:56,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:56,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19873698] [2020-08-19 02:34:56,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:56,842 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:56,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:56,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:56,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:56,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:56,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:56,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:56,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:34:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:56,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:34:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:56,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:56,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:57,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:57,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:57,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:57,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:57,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:57,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 02:34:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:57,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 02:34:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:57,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:34:57,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19873698] [2020-08-19 02:34:57,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:57,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 02:34:57,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612824364] [2020-08-19 02:34:57,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:34:57,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:57,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:34:57,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:34:57,070 INFO L87 Difference]: Start difference. First operand 395 states and 449 transitions. Second operand 12 states. [2020-08-19 02:34:57,723 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:57,956 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:58,182 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:58,870 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:59,113 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:59,358 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:00,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:00,674 INFO L93 Difference]: Finished difference Result 885 states and 1110 transitions. [2020-08-19 02:35:00,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 02:35:00,674 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2020-08-19 02:35:00,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:00,678 INFO L225 Difference]: With dead ends: 885 [2020-08-19 02:35:00,678 INFO L226 Difference]: Without dead ends: 518 [2020-08-19 02:35:00,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 02:35:00,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-08-19 02:35:00,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 403. [2020-08-19 02:35:00,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-08-19 02:35:00,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 457 transitions. [2020-08-19 02:35:00,759 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 457 transitions. Word has length 104 [2020-08-19 02:35:00,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:00,759 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 457 transitions. [2020-08-19 02:35:00,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:35:00,759 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 457 transitions. [2020-08-19 02:35:00,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-19 02:35:00,761 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:00,762 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:00,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:35:00,762 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:00,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:00,763 INFO L82 PathProgramCache]: Analyzing trace with hash -268654166, now seen corresponding path program 1 times [2020-08-19 02:35:00,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:00,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344544501] [2020-08-19 02:35:00,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,079 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:01,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:35:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:35:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:35:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 02:35:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 02:35:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:35:01,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344544501] [2020-08-19 02:35:01,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:01,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:35:01,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33248810] [2020-08-19 02:35:01,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:35:01,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:01,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:35:01,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:35:01,228 INFO L87 Difference]: Start difference. First operand 403 states and 457 transitions. Second operand 8 states. [2020-08-19 02:35:01,679 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:02,447 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:05,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:05,170 INFO L93 Difference]: Finished difference Result 1233 states and 1597 transitions. [2020-08-19 02:35:05,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 02:35:05,170 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2020-08-19 02:35:05,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:05,176 INFO L225 Difference]: With dead ends: 1233 [2020-08-19 02:35:05,176 INFO L226 Difference]: Without dead ends: 858 [2020-08-19 02:35:05,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-19 02:35:05,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2020-08-19 02:35:05,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 713. [2020-08-19 02:35:05,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-08-19 02:35:05,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 835 transitions. [2020-08-19 02:35:05,338 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 835 transitions. Word has length 104 [2020-08-19 02:35:05,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:05,340 INFO L479 AbstractCegarLoop]: Abstraction has 713 states and 835 transitions. [2020-08-19 02:35:05,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:35:05,340 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 835 transitions. [2020-08-19 02:35:05,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 02:35:05,343 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:05,343 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:05,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:35:05,344 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:05,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:05,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1852641244, now seen corresponding path program 1 times [2020-08-19 02:35:05,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:05,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980746292] [2020-08-19 02:35:05,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:05,654 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:05,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:05,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:05,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:05,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:05,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:05,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:05,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:35:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:05,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:35:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:05,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:35:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:05,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:05,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:05,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:05,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:35:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:05,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:05,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:06,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:06,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 02:35:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:06,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 02:35:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:06,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 02:35:06,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980746292] [2020-08-19 02:35:06,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:35:06,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-19 02:35:06,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126644232] [2020-08-19 02:35:06,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-19 02:35:06,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:06,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-19 02:35:06,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:35:06,052 INFO L87 Difference]: Start difference. First operand 713 states and 835 transitions. Second operand 18 states. [2020-08-19 02:35:06,470 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:06,808 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 02:35:07,083 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:35:07,346 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:35:08,077 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:09,197 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:35:09,535 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:35:09,823 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:35:10,131 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:35:10,471 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:35:10,771 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:35:11,342 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-19 02:35:11,925 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-19 02:35:14,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:14,113 INFO L93 Difference]: Finished difference Result 1515 states and 1873 transitions. [2020-08-19 02:35:14,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-19 02:35:14,113 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 108 [2020-08-19 02:35:14,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:14,119 INFO L225 Difference]: With dead ends: 1515 [2020-08-19 02:35:14,119 INFO L226 Difference]: Without dead ends: 830 [2020-08-19 02:35:14,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=554, Invalid=2308, Unknown=0, NotChecked=0, Total=2862 [2020-08-19 02:35:14,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-08-19 02:35:14,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 694. [2020-08-19 02:35:14,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-08-19 02:35:14,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 803 transitions. [2020-08-19 02:35:14,268 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 803 transitions. Word has length 108 [2020-08-19 02:35:14,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:14,269 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 803 transitions. [2020-08-19 02:35:14,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-19 02:35:14,269 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 803 transitions. [2020-08-19 02:35:14,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-19 02:35:14,273 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:14,274 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:14,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:35:14,274 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:14,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:14,275 INFO L82 PathProgramCache]: Analyzing trace with hash 760447467, now seen corresponding path program 1 times [2020-08-19 02:35:14,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:14,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421962470] [2020-08-19 02:35:14,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,588 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:14,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:35:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:35:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:35:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:35:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 02:35:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 02:35:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 02:35:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 02:35:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-19 02:35:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-19 02:35:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,983 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-19 02:35:14,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421962470] [2020-08-19 02:35:14,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:35:14,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 02:35:14,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029883691] [2020-08-19 02:35:14,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 02:35:14,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:14,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 02:35:14,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 02:35:14,989 INFO L87 Difference]: Start difference. First operand 694 states and 803 transitions. Second operand 19 states. [2020-08-19 02:35:15,585 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:15,971 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 02:35:16,252 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:35:16,515 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:35:17,287 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:18,421 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:18,750 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:19,036 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:19,321 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:19,653 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:19,936 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:21,298 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:21,558 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:21,847 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:22,098 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:23,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:23,067 INFO L93 Difference]: Finished difference Result 1298 states and 1607 transitions. [2020-08-19 02:35:23,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-19 02:35:23,068 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 160 [2020-08-19 02:35:23,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:23,069 INFO L225 Difference]: With dead ends: 1298 [2020-08-19 02:35:23,069 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 02:35:23,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=561, Invalid=2519, Unknown=0, NotChecked=0, Total=3080 [2020-08-19 02:35:23,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 02:35:23,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 02:35:23,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 02:35:23,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 02:35:23,076 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160 [2020-08-19 02:35:23,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:23,076 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 02:35:23,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 02:35:23,076 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 02:35:23,076 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 02:35:23,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 02:35:23,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 02:35:26,029 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 326 DAG size of output: 274 [2020-08-19 02:35:26,267 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 204 [2020-08-19 02:35:26,462 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 201 [2020-08-19 02:35:26,590 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 205 [2020-08-19 02:35:26,940 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 201 [2020-08-19 02:35:27,111 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 204 [2020-08-19 02:35:27,339 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 203