/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=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:31:26,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:31:26,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:31:26,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:31:26,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:31:26,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:31:26,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:31:26,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:31:26,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:31:26,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:31:26,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:31:26,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:31:26,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:31:26,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:31:26,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:31:26,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:31:26,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:31:26,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:31:26,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:31:26,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:31:26,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:31:26,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:31:26,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:31:26,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:31:26,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:31:26,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:31:26,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:31:26,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:31:26,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:31:26,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:31:26,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:31:26,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:31:26,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:31:26,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:31:26,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:31:26,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:31:26,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:31:26,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:31:26,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:31:26,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:31:26,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:31:26,834 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 [2020-08-18 22:31:26,864 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:31:26,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:31:26,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:31:26,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:31:26,866 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:31:26,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:31:26,869 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:31:26,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:31:26,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:31:26,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:31:26,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:31:26,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:31:26,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:31:26,870 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:31:26,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:31:26,870 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:31:26,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:31:26,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:31:26,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:31:26,871 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:31:26,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:31:26,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:31:26,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:31:26,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:31:26,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:31:26,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:31:26,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:31:26,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:31:26,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:31:26,873 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=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:31:27,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:31:27,205 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:31:27,209 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:31:27,210 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:31:27,211 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:31:27,212 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c [2020-08-18 22:31:27,265 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef8c75b4c/3335f57fb53d49788c326adb1ba6d329/FLAG393b3a5e4 [2020-08-18 22:31:27,795 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:31:27,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c [2020-08-18 22:31:27,811 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef8c75b4c/3335f57fb53d49788c326adb1ba6d329/FLAG393b3a5e4 [2020-08-18 22:31:28,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef8c75b4c/3335f57fb53d49788c326adb1ba6d329 [2020-08-18 22:31:28,076 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:31:28,077 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:31:28,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:31:28,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:31:28,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:31:28,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:31:28" (1/1) ... [2020-08-18 22:31:28,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec95236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:31:28, skipping insertion in model container [2020-08-18 22:31:28,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:31:28" (1/1) ... [2020-08-18 22:31:28,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:31:28,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:31:28,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:31:28,630 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:31:28,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:31:28,750 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:31:28,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:31:28 WrapperNode [2020-08-18 22:31:28,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:31:28,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:31:28,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:31:28,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:31:28,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:31:28" (1/1) ... [2020-08-18 22:31:28,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:31:28" (1/1) ... [2020-08-18 22:31:28,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:31:28" (1/1) ... [2020-08-18 22:31:28,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:31:28" (1/1) ... [2020-08-18 22:31:28,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:31:28" (1/1) ... [2020-08-18 22:31:28,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:31:28" (1/1) ... [2020-08-18 22:31:28,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:31:28" (1/1) ... [2020-08-18 22:31:28,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:31:28,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:31:28,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:31:28,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:31:28,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:31:28" (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 [2020-08-18 22:31:28,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:31:28,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:31:28,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 22:31:28,907 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 22:31:28,907 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 22:31:28,908 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 22:31:28,908 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 22:31:28,908 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 22:31:28,908 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 22:31:28,908 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 22:31:28,908 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 22:31:28,908 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 22:31:28,909 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 22:31:28,909 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 22:31:28,909 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:31:28,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 22:31:28,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 22:31:28,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 22:31:28,910 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 22:31:28,910 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 22:31:28,910 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 22:31:28,910 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 22:31:28,910 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 22:31:28,911 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 22:31:28,911 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 22:31:28,911 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 22:31:28,911 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 22:31:28,911 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 22:31:28,911 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 22:31:28,911 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 22:31:28,912 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 22:31:28,912 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 22:31:28,912 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 22:31:28,912 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 22:31:28,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 22:31:28,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 22:31:28,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 22:31:28,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 22:31:28,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 22:31:28,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 22:31:28,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:31:28,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:31:28,914 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 22:31:28,914 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 22:31:28,914 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 22:31:28,914 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 22:31:28,914 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 22:31:28,914 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 22:31:28,915 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 22:31:28,915 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 22:31:28,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:31:28,915 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 22:31:28,915 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 22:31:28,915 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 22:31:28,916 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 22:31:28,916 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 22:31:28,916 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 22:31:28,916 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 22:31:28,917 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 22:31:28,917 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 22:31:28,917 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 22:31:28,917 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 22:31:28,917 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:31:28,917 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 22:31:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 22:31:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 22:31:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 22:31:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 22:31:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 22:31:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 22:31:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 22:31:28,919 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 22:31:28,919 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 22:31:28,920 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 22:31:28,920 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 22:31:28,920 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 22:31:28,921 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:31:28,921 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 22:31:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 22:31:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:31:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 22:31:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:31:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 22:31:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 22:31:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:31:28,923 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 22:31:28,923 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 22:31:28,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:31:28,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 22:31:28,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 22:31:28,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 22:31:28,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:31:28,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 22:31:28,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:31:29,949 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:31:29,950 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 22:31:29,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:31:29 BoogieIcfgContainer [2020-08-18 22:31:29,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:31:29,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:31:29,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:31:29,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:31:29,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:31:28" (1/3) ... [2020-08-18 22:31:29,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13f75efd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:31:29, skipping insertion in model container [2020-08-18 22:31:29,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:31:28" (2/3) ... [2020-08-18 22:31:29,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13f75efd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:31:29, skipping insertion in model container [2020-08-18 22:31:29,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:31:29" (3/3) ... [2020-08-18 22:31:29,964 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product39.cil.c [2020-08-18 22:31:29,975 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:31:29,983 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:31:29,996 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:31:30,021 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:31:30,022 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:31:30,022 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:31:30,022 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:31:30,022 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:31:30,023 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:31:30,023 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:31:30,023 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:31:30,048 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-08-18 22:31:30,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 22:31:30,065 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:31:30,066 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] [2020-08-18 22:31:30,067 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:31:30,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:31:30,076 INFO L82 PathProgramCache]: Analyzing trace with hash 652232891, now seen corresponding path program 1 times [2020-08-18 22:31:30,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:31:30,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319003510] [2020-08-18 22:31:30,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:31:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:30,828 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:31:30,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:31:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:30,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:31:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:30,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:31:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:30,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:31:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:30,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:31:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:30,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:31:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:30,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 22:31:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:30,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 22:31:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:30,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:31:30,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319003510] [2020-08-18 22:31:30,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:31:30,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:31:30,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211065528] [2020-08-18 22:31:30,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:31:30,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:31:30,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:31:30,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:31:30,952 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 4 states. [2020-08-18 22:31:32,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:31:32,113 INFO L93 Difference]: Finished difference Result 301 states and 396 transitions. [2020-08-18 22:31:32,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 22:31:32,115 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 22:31:32,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:31:32,130 INFO L225 Difference]: With dead ends: 301 [2020-08-18 22:31:32,130 INFO L226 Difference]: Without dead ends: 168 [2020-08-18 22:31:32,135 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 [2020-08-18 22:31:32,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-18 22:31:32,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 134. [2020-08-18 22:31:32,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-18 22:31:32,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 159 transitions. [2020-08-18 22:31:32,241 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 159 transitions. Word has length 51 [2020-08-18 22:31:32,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:31:32,242 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 159 transitions. [2020-08-18 22:31:32,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:31:32,242 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 159 transitions. [2020-08-18 22:31:32,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 22:31:32,254 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:31:32,254 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] [2020-08-18 22:31:32,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:31:32,254 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:31:32,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:31:32,255 INFO L82 PathProgramCache]: Analyzing trace with hash -564528421, now seen corresponding path program 1 times [2020-08-18 22:31:32,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:31:32,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729317145] [2020-08-18 22:31:32,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:31:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:32,585 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:31:32,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:31:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:32,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:31:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:32,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:31:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:32,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:31:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:32,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:31:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:32,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:31:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:32,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:31:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:32,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:31:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:32,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:31:32,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729317145] [2020-08-18 22:31:32,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:31:32,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 22:31:32,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640519469] [2020-08-18 22:31:32,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 22:31:32,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:31:32,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 22:31:32,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:31:32,646 INFO L87 Difference]: Start difference. First operand 134 states and 159 transitions. Second operand 5 states. [2020-08-18 22:31:33,128 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:31:33,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:31:33,989 INFO L93 Difference]: Finished difference Result 240 states and 299 transitions. [2020-08-18 22:31:33,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 22:31:33,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 22:31:33,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:31:33,992 INFO L225 Difference]: With dead ends: 240 [2020-08-18 22:31:33,993 INFO L226 Difference]: Without dead ends: 158 [2020-08-18 22:31:33,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 22:31:33,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-18 22:31:34,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 125. [2020-08-18 22:31:34,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-18 22:31:34,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2020-08-18 22:31:34,033 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 52 [2020-08-18 22:31:34,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:31:34,034 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2020-08-18 22:31:34,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 22:31:34,034 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2020-08-18 22:31:34,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 22:31:34,036 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:31:34,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:31:34,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:31:34,037 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:31:34,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:31:34,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1211879035, now seen corresponding path program 1 times [2020-08-18 22:31:34,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:31:34,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768111012] [2020-08-18 22:31:34,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:31:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:34,366 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:31:34,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:31:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:34,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:31:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:34,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:31:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:34,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:31:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:34,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:31:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:34,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:31:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:34,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 22:31:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:34,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 22:31:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:34,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:31:34,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768111012] [2020-08-18 22:31:34,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:31:34,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:31:34,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244096024] [2020-08-18 22:31:34,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:31:34,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:31:34,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:31:34,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:31:34,477 INFO L87 Difference]: Start difference. First operand 125 states and 147 transitions. Second operand 9 states. [2020-08-18 22:31:34,877 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:31:35,175 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:31:35,434 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:31:35,695 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:31:36,509 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:31:38,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:31:38,392 INFO L93 Difference]: Finished difference Result 423 states and 537 transitions. [2020-08-18 22:31:38,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 22:31:38,393 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-18 22:31:38,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:31:38,403 INFO L225 Difference]: With dead ends: 423 [2020-08-18 22:31:38,403 INFO L226 Difference]: Without dead ends: 326 [2020-08-18 22:31:38,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 22:31:38,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-18 22:31:38,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 265. [2020-08-18 22:31:38,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-08-18 22:31:38,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 324 transitions. [2020-08-18 22:31:38,510 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 324 transitions. Word has length 56 [2020-08-18 22:31:38,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:31:38,510 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 324 transitions. [2020-08-18 22:31:38,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:31:38,511 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 324 transitions. [2020-08-18 22:31:38,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-18 22:31:38,513 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:31:38,513 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] [2020-08-18 22:31:38,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:31:38,513 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:31:38,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:31:38,514 INFO L82 PathProgramCache]: Analyzing trace with hash -773448372, now seen corresponding path program 1 times [2020-08-18 22:31:38,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:31:38,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732563547] [2020-08-18 22:31:38,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:31:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:38,821 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:31:38,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:31:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:38,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:31:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:38,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:31:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:38,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:31:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:38,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:31:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:38,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:31:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:38,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:31:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:38,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 22:31:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:38,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 22:31:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:38,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:31:38,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732563547] [2020-08-18 22:31:38,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:31:38,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:31:38,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031806909] [2020-08-18 22:31:38,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:31:38,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:31:38,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:31:38,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:31:38,933 INFO L87 Difference]: Start difference. First operand 265 states and 324 transitions. Second operand 9 states. [2020-08-18 22:31:39,395 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:31:40,426 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:31:40,834 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:31:41,183 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:31:41,509 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:31:42,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:31:42,887 INFO L93 Difference]: Finished difference Result 845 states and 1123 transitions. [2020-08-18 22:31:42,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 22:31:42,888 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-18 22:31:42,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:31:42,894 INFO L225 Difference]: With dead ends: 845 [2020-08-18 22:31:42,894 INFO L226 Difference]: Without dead ends: 608 [2020-08-18 22:31:42,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 22:31:42,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-08-18 22:31:43,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 478. [2020-08-18 22:31:43,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-18 22:31:43,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 588 transitions. [2020-08-18 22:31:43,035 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 588 transitions. Word has length 62 [2020-08-18 22:31:43,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:31:43,036 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 588 transitions. [2020-08-18 22:31:43,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:31:43,036 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 588 transitions. [2020-08-18 22:31:43,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-18 22:31:43,038 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:31:43,038 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] [2020-08-18 22:31:43,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:31:43,039 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:31:43,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:31:43,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1032831448, now seen corresponding path program 1 times [2020-08-18 22:31:43,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:31:43,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675605530] [2020-08-18 22:31:43,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:31:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:43,370 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:31:43,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:31:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:43,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:31:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:43,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:31:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:43,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:31:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:43,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:31:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:43,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:31:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:43,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 22:31:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:43,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 22:31:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:43,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 22:31:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:43,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 22:31:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:43,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:31:43,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675605530] [2020-08-18 22:31:43,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:31:43,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 22:31:43,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807369577] [2020-08-18 22:31:43,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:31:43,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:31:43,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:31:43,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:31:43,509 INFO L87 Difference]: Start difference. First operand 478 states and 588 transitions. Second operand 10 states. [2020-08-18 22:31:43,939 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:31:44,989 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:31:45,281 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:31:45,551 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:31:46,178 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:31:47,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:31:47,424 INFO L93 Difference]: Finished difference Result 1339 states and 1842 transitions. [2020-08-18 22:31:47,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 22:31:47,427 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-18 22:31:47,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:31:47,435 INFO L225 Difference]: With dead ends: 1339 [2020-08-18 22:31:47,435 INFO L226 Difference]: Without dead ends: 889 [2020-08-18 22:31:47,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-18 22:31:47,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-08-18 22:31:47,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 693. [2020-08-18 22:31:47,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-08-18 22:31:47,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 847 transitions. [2020-08-18 22:31:47,594 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 847 transitions. Word has length 66 [2020-08-18 22:31:47,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:31:47,594 INFO L479 AbstractCegarLoop]: Abstraction has 693 states and 847 transitions. [2020-08-18 22:31:47,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:31:47,594 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 847 transitions. [2020-08-18 22:31:47,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 22:31:47,597 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:31:47,597 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] [2020-08-18 22:31:47,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 22:31:47,598 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:31:47,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:31:47,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1961211398, now seen corresponding path program 1 times [2020-08-18 22:31:47,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:31:47,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547469733] [2020-08-18 22:31:47,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:31:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:47,952 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:31:47,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:31:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:47,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:31:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:47,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:31:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:47,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:31:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:47,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:31:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:48,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:31:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:48,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 22:31:48,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:48,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:31:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:48,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:31:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:48,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:31:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:48,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:31:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:48,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:31:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:48,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:31:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:48,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 22:31:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:48,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:31:48,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547469733] [2020-08-18 22:31:48,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:31:48,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 22:31:48,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991068591] [2020-08-18 22:31:48,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:31:48,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:31:48,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:31:48,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:31:48,131 INFO L87 Difference]: Start difference. First operand 693 states and 847 transitions. Second operand 10 states. [2020-08-18 22:31:48,589 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:31:49,603 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:31:49,864 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 22:31:50,176 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:31:50,439 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:31:52,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:31:52,433 INFO L93 Difference]: Finished difference Result 2350 states and 3369 transitions. [2020-08-18 22:31:52,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 22:31:52,434 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 22:31:52,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:31:52,449 INFO L225 Difference]: With dead ends: 2350 [2020-08-18 22:31:52,449 INFO L226 Difference]: Without dead ends: 1685 [2020-08-18 22:31:52,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-18 22:31:52,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-08-18 22:31:52,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1247. [2020-08-18 22:31:52,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2020-08-18 22:31:52,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1522 transitions. [2020-08-18 22:31:52,876 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1522 transitions. Word has length 88 [2020-08-18 22:31:52,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:31:52,876 INFO L479 AbstractCegarLoop]: Abstraction has 1247 states and 1522 transitions. [2020-08-18 22:31:52,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:31:52,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1522 transitions. [2020-08-18 22:31:52,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 22:31:52,882 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:31:52,882 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] [2020-08-18 22:31:52,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 22:31:52,882 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:31:52,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:31:52,883 INFO L82 PathProgramCache]: Analyzing trace with hash 608275001, now seen corresponding path program 1 times [2020-08-18 22:31:52,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:31:52,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240573028] [2020-08-18 22:31:52,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:31:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:53,129 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:31:53,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:31:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:53,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:31:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:53,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:31:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:53,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:31:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:53,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:31:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:53,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:31:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:53,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 22:31:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:53,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:31:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:53,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:31:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:53,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:31:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:53,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:31:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:53,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:31:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:53,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:31:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:53,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 22:31:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:53,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:31:53,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240573028] [2020-08-18 22:31:53,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:31:53,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 22:31:53,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100996822] [2020-08-18 22:31:53,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:31:53,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:31:53,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:31:53,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:31:53,291 INFO L87 Difference]: Start difference. First operand 1247 states and 1522 transitions. Second operand 10 states. [2020-08-18 22:31:54,627 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:31:54,902 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 22:31:55,234 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:31:55,501 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:31:56,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:31:56,749 INFO L93 Difference]: Finished difference Result 2904 states and 3892 transitions. [2020-08-18 22:31:56,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 22:31:56,750 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 22:31:56,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:31:56,764 INFO L225 Difference]: With dead ends: 2904 [2020-08-18 22:31:56,764 INFO L226 Difference]: Without dead ends: 1685 [2020-08-18 22:31:56,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 22:31:56,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-08-18 22:31:57,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1287. [2020-08-18 22:31:57,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1287 states. [2020-08-18 22:31:57,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1562 transitions. [2020-08-18 22:31:57,083 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1562 transitions. Word has length 88 [2020-08-18 22:31:57,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:31:57,084 INFO L479 AbstractCegarLoop]: Abstraction has 1287 states and 1562 transitions. [2020-08-18 22:31:57,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:31:57,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1562 transitions. [2020-08-18 22:31:57,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 22:31:57,087 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:31:57,087 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] [2020-08-18 22:31:57,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 22:31:57,087 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:31:57,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:31:57,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1309874875, now seen corresponding path program 1 times [2020-08-18 22:31:57,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:31:57,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969245093] [2020-08-18 22:31:57,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:31:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:57,344 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:31:57,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:31:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:57,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:31:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:57,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:31:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:57,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:31:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:57,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:31:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:57,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:31:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:57,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 22:31:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:57,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:31:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:57,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:31:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:57,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:31:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:57,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:31:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:57,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:31:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:57,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:31:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:57,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 22:31:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:31:57,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:31:57,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969245093] [2020-08-18 22:31:57,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:31:57,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 22:31:57,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652401106] [2020-08-18 22:31:57,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 22:31:57,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:31:57,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 22:31:57,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:31:57,511 INFO L87 Difference]: Start difference. First operand 1287 states and 1562 transitions. Second operand 12 states. [2020-08-18 22:31:58,148 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:31:58,423 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:31:58,644 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:31:59,459 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:31:59,735 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:31:59,965 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:32:01,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:32:01,376 INFO L93 Difference]: Finished difference Result 2600 states and 3450 transitions. [2020-08-18 22:32:01,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 22:32:01,379 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2020-08-18 22:32:01,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:32:01,389 INFO L225 Difference]: With dead ends: 2600 [2020-08-18 22:32:01,390 INFO L226 Difference]: Without dead ends: 1341 [2020-08-18 22:32:01,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 22:32:01,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-08-18 22:32:01,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1063. [2020-08-18 22:32:01,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2020-08-18 22:32:01,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1258 transitions. [2020-08-18 22:32:01,603 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1258 transitions. Word has length 88 [2020-08-18 22:32:01,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:32:01,603 INFO L479 AbstractCegarLoop]: Abstraction has 1063 states and 1258 transitions. [2020-08-18 22:32:01,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 22:32:01,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1258 transitions. [2020-08-18 22:32:01,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 22:32:01,607 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:32:01,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:32:01,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 22:32:01,607 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:32:01,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:32:01,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1814435734, now seen corresponding path program 1 times [2020-08-18 22:32:01,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:32:01,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394319285] [2020-08-18 22:32:01,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:32:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:01,880 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:32:01,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:32:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:01,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:32:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:01,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:32:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:01,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:32:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:01,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:32:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:01,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:32:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:01,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:32:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:01,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:32:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:01,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 22:32:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:01,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:01,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:01,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:01,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:32:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:01,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 22:32:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:01,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 22:32:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:02,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:32:02,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394319285] [2020-08-18 22:32:02,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:32:02,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:32:02,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639267576] [2020-08-18 22:32:02,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:32:02,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:32:02,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:32:02,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:32:02,006 INFO L87 Difference]: Start difference. First operand 1063 states and 1258 transitions. Second operand 8 states. [2020-08-18 22:32:02,502 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:32:05,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:32:05,298 INFO L93 Difference]: Finished difference Result 2130 states and 2835 transitions. [2020-08-18 22:32:05,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 22:32:05,299 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-08-18 22:32:05,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:32:05,313 INFO L225 Difference]: With dead ends: 2130 [2020-08-18 22:32:05,313 INFO L226 Difference]: Without dead ends: 2127 [2020-08-18 22:32:05,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-18 22:32:05,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2020-08-18 22:32:05,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 1652. [2020-08-18 22:32:05,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1652 states. [2020-08-18 22:32:05,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 1981 transitions. [2020-08-18 22:32:05,691 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 1981 transitions. Word has length 92 [2020-08-18 22:32:05,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:32:05,693 INFO L479 AbstractCegarLoop]: Abstraction has 1652 states and 1981 transitions. [2020-08-18 22:32:05,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:32:05,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 1981 transitions. [2020-08-18 22:32:05,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 22:32:05,703 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:32:05,704 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:32:05,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 22:32:05,704 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:32:05,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:32:05,705 INFO L82 PathProgramCache]: Analyzing trace with hash -374585462, now seen corresponding path program 1 times [2020-08-18 22:32:05,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:32:05,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524817401] [2020-08-18 22:32:05,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:32:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,012 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:32:06,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:32:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:32:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:32:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:32:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:32:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:32:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:32:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:32:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 22:32:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:32:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 22:32:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 22:32:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 22:32:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 22:32:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 22:32:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 22:32:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 22:32:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:06,320 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-18 22:32:06,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524817401] [2020-08-18 22:32:06,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:32:06,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 22:32:06,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261678766] [2020-08-18 22:32:06,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 22:32:06,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:32:06,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 22:32:06,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-18 22:32:06,323 INFO L87 Difference]: Start difference. First operand 1652 states and 1981 transitions. Second operand 19 states. [2020-08-18 22:32:06,808 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:32:07,238 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 22:32:07,494 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:32:07,734 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:32:08,501 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:32:09,098 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:09,510 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:11,999 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:12,236 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:12,550 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:12,815 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:13,072 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:13,331 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:13,628 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:13,865 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:14,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:32:14,912 INFO L93 Difference]: Finished difference Result 3563 states and 4503 transitions. [2020-08-18 22:32:14,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-18 22:32:14,913 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 150 [2020-08-18 22:32:14,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:32:14,928 INFO L225 Difference]: With dead ends: 3563 [2020-08-18 22:32:14,928 INFO L226 Difference]: Without dead ends: 1939 [2020-08-18 22:32:14,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=608, Invalid=2814, Unknown=0, NotChecked=0, Total=3422 [2020-08-18 22:32:14,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2020-08-18 22:32:15,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1598. [2020-08-18 22:32:15,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1598 states. [2020-08-18 22:32:15,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 1879 transitions. [2020-08-18 22:32:15,341 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 1879 transitions. Word has length 150 [2020-08-18 22:32:15,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:32:15,341 INFO L479 AbstractCegarLoop]: Abstraction has 1598 states and 1879 transitions. [2020-08-18 22:32:15,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 22:32:15,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 1879 transitions. [2020-08-18 22:32:15,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 22:32:15,348 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:32:15,349 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:32:15,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 22:32:15,349 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:32:15,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:32:15,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1053600099, now seen corresponding path program 1 times [2020-08-18 22:32:15,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:32:15,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176401354] [2020-08-18 22:32:15,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:32:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,650 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:32:15,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:32:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:32:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:32:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:32:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:32:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:32:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:32:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:32:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 22:32:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:32:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 22:32:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 22:32:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 22:32:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 22:32:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:32:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 22:32:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 22:32:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:15,887 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-18 22:32:15,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176401354] [2020-08-18 22:32:15,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:32:15,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 22:32:15,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71828674] [2020-08-18 22:32:15,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 22:32:15,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:32:15,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 22:32:15,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-18 22:32:15,891 INFO L87 Difference]: Start difference. First operand 1598 states and 1879 transitions. Second operand 14 states. [2020-08-18 22:32:16,632 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:32:16,975 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:32:17,296 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:32:17,817 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:32:19,263 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:32:21,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:32:21,108 INFO L93 Difference]: Finished difference Result 2988 states and 3684 transitions. [2020-08-18 22:32:21,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-18 22:32:21,109 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 154 [2020-08-18 22:32:21,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:32:21,120 INFO L225 Difference]: With dead ends: 2988 [2020-08-18 22:32:21,120 INFO L226 Difference]: Without dead ends: 1734 [2020-08-18 22:32:21,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2020-08-18 22:32:21,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2020-08-18 22:32:21,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1482. [2020-08-18 22:32:21,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1482 states. [2020-08-18 22:32:21,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 1650 transitions. [2020-08-18 22:32:21,399 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 1650 transitions. Word has length 154 [2020-08-18 22:32:21,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:32:21,400 INFO L479 AbstractCegarLoop]: Abstraction has 1482 states and 1650 transitions. [2020-08-18 22:32:21,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 22:32:21,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 1650 transitions. [2020-08-18 22:32:21,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-18 22:32:21,408 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:32:21,408 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:32:21,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 22:32:21,409 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:32:21,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:32:21,410 INFO L82 PathProgramCache]: Analyzing trace with hash -2018968461, now seen corresponding path program 1 times [2020-08-18 22:32:21,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:32:21,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598740851] [2020-08-18 22:32:21,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:32:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,730 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:32:21,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:32:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:32:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:32:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:32:21,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:32:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:32:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:32:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:32:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 22:32:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:32:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 22:32:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 22:32:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 22:32:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-18 22:32:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:32:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:32:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:32:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 22:32:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-18 22:32:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:32:21,894 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-08-18 22:32:21,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598740851] [2020-08-18 22:32:21,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:32:21,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 22:32:21,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172081803] [2020-08-18 22:32:21,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:32:21,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:32:21,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:32:21,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:32:21,896 INFO L87 Difference]: Start difference. First operand 1482 states and 1650 transitions. Second operand 10 states. [2020-08-18 22:32:22,740 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:32:24,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:32:24,416 INFO L93 Difference]: Finished difference Result 1918 states and 2270 transitions. [2020-08-18 22:32:24,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 22:32:24,417 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 160 [2020-08-18 22:32:24,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:32:24,418 INFO L225 Difference]: With dead ends: 1918 [2020-08-18 22:32:24,418 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 22:32:24,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2020-08-18 22:32:24,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 22:32:24,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 22:32:24,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 22:32:24,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 22:32:24,424 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160 [2020-08-18 22:32:24,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:32:24,424 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 22:32:24,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:32:24,425 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 22:32:24,425 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 22:32:24,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 22:32:24,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.