/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:18:55,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:18:55,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:18:55,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:18:55,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:18:55,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:18:55,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:18:55,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:18:55,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:18:55,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:18:55,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:18:55,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:18:55,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:18:55,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:18:55,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:18:55,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:18:55,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:18:55,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:18:55,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:18:55,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:18:55,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:18:55,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:18:55,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:18:55,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:18:55,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 15:18:55,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 15:18:55,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 15:18:55,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 15:18:55,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 15:18:55,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 15:18:55,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 15:18:55,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 15:18:55,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 15:18:55,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 15:18:55,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 15:18:55,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 15:18:55,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 15:18:55,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 15:18:55,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:18:55,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:18:55,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:18:55,846 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 15:18:55,889 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:18:55,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:18:55,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:18:55,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:18:55,891 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:18:55,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:18:55,891 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:18:55,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:18:55,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:18:55,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:18:55,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:18:55,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:18:55,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:18:55,892 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:18:55,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:18:55,893 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:18:55,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:18:55,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:18:55,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:18:55,893 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:18:55,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:18:55,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:18:55,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:18:55,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:18:55,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:18:55,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:18:55,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:18:55,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:18:55,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:18:55,895 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 -> false [2020-08-18 15:18:56,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:18:56,231 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:18:56,235 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:18:56,237 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:18:56,237 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:18:56,238 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c [2020-08-18 15:18:56,309 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/307dde072/d9808586777d41a1b92f6e39cb32dc06/FLAGbc61aa42f [2020-08-18 15:18:56,822 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:18:56,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c [2020-08-18 15:18:56,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/307dde072/d9808586777d41a1b92f6e39cb32dc06/FLAGbc61aa42f [2020-08-18 15:18:57,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/307dde072/d9808586777d41a1b92f6e39cb32dc06 [2020-08-18 15:18:57,112 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:18:57,114 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:18:57,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:18:57,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:18:57,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:18:57,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:18:57" (1/1) ... [2020-08-18 15:18:57,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69168dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:57, skipping insertion in model container [2020-08-18 15:18:57,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:18:57" (1/1) ... [2020-08-18 15:18:57,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:18:57,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:18:57,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:18:57,605 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:18:57,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:18:57,809 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:18:57,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:57 WrapperNode [2020-08-18 15:18:57,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:18:57,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:18:57,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:18:57,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:18:57,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:57" (1/1) ... [2020-08-18 15:18:57,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:57" (1/1) ... [2020-08-18 15:18:57,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:57" (1/1) ... [2020-08-18 15:18:57,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:57" (1/1) ... [2020-08-18 15:18:57,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:57" (1/1) ... [2020-08-18 15:18:57,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:57" (1/1) ... [2020-08-18 15:18:57,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:57" (1/1) ... [2020-08-18 15:18:57,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:18:57,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:18:57,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:18:57,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:18:57,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:57" (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 15:18:57,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:18:57,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:18:57,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 15:18:57,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 15:18:57,990 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 15:18:57,991 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 15:18:57,991 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 15:18:57,991 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 15:18:57,992 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 15:18:57,992 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 15:18:57,992 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 15:18:57,993 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 15:18:57,993 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 15:18:57,993 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 15:18:57,993 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 15:18:57,994 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 15:18:57,994 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 15:18:57,995 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 15:18:57,995 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 15:18:57,995 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 15:18:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 15:18:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 15:18:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 15:18:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 15:18:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 15:18:57,997 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 15:18:57,998 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 15:18:57,998 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 15:18:57,998 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 15:18:57,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 15:18:57,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 15:18:57,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 15:18:57,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 15:18:57,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 15:18:58,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 15:18:58,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 15:18:58,000 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 15:18:58,000 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 15:18:58,000 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 15:18:58,001 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 15:18:58,001 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:18:58,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:18:58,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 15:18:58,001 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 15:18:58,001 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 15:18:58,002 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 15:18:58,003 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 15:18:58,003 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 15:18:58,003 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 15:18:58,003 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 15:18:58,003 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 15:18:58,004 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 15:18:58,004 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 15:18:58,004 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 15:18:58,004 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 15:18:58,004 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 15:18:58,005 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 15:18:58,005 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 15:18:58,005 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 15:18:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 15:18:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 15:18:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 15:18:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 15:18:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 15:18:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 15:18:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 15:18:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 15:18:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 15:18:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 15:18:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 15:18:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 15:18:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:18:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 15:18:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 15:18:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 15:18:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 15:18:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 15:18:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 15:18:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 15:18:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 15:18:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 15:18:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 15:18:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:18:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 15:18:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 15:18:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 15:18:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 15:18:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 15:18:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 15:18:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 15:18:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 15:18:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 15:18:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:18:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:18:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 15:18:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:18:59,196 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:18:59,196 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 15:18:59,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:18:59 BoogieIcfgContainer [2020-08-18 15:18:59,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:18:59,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:18:59,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:18:59,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:18:59,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:18:57" (1/3) ... [2020-08-18 15:18:59,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ebabc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:18:59, skipping insertion in model container [2020-08-18 15:18:59,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:57" (2/3) ... [2020-08-18 15:18:59,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ebabc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:18:59, skipping insertion in model container [2020-08-18 15:18:59,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:18:59" (3/3) ... [2020-08-18 15:18:59,211 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product53.cil.c [2020-08-18 15:18:59,221 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:18:59,229 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:18:59,242 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:18:59,268 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:18:59,268 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:18:59,268 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:18:59,268 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:18:59,269 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:18:59,269 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:18:59,269 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:18:59,269 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:18:59,293 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-08-18 15:18:59,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 15:18:59,304 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:18:59,305 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 15:18:59,306 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:18:59,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:18:59,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1930033303, now seen corresponding path program 1 times [2020-08-18 15:18:59,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:18:59,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002761746] [2020-08-18 15:18:59,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:18:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:59,964 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:18:59,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:18:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:00,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:19:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:00,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:19:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:00,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:19:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:00,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:19:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:00,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:19:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:00,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 15:19:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:00,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 15:19:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:00,087 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 15:19:00,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002761746] [2020-08-18 15:19:00,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:19:00,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 15:19:00,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467115316] [2020-08-18 15:19:00,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 15:19:00,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:19:00,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 15:19:00,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 15:19:00,116 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 3 states. [2020-08-18 15:19:01,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:19:01,349 INFO L93 Difference]: Finished difference Result 341 states and 445 transitions. [2020-08-18 15:19:01,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 15:19:01,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 15:19:01,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:19:01,382 INFO L225 Difference]: With dead ends: 341 [2020-08-18 15:19:01,383 INFO L226 Difference]: Without dead ends: 183 [2020-08-18 15:19:01,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 15:19:01,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-08-18 15:19:01,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 149. [2020-08-18 15:19:01,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-18 15:19:01,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 177 transitions. [2020-08-18 15:19:01,510 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 177 transitions. Word has length 52 [2020-08-18 15:19:01,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:19:01,511 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 177 transitions. [2020-08-18 15:19:01,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 15:19:01,511 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 177 transitions. [2020-08-18 15:19:01,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 15:19:01,515 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:19:01,515 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] [2020-08-18 15:19:01,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:19:01,516 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:19:01,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:19:01,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1692135718, now seen corresponding path program 1 times [2020-08-18 15:19:01,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:19:01,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870269059] [2020-08-18 15:19:01,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:19:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:01,811 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:19:01,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:19:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:01,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:19:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:01,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:19:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:01,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:19:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:01,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:19:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:01,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:19:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:01,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:19:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:01,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 15:19:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:01,859 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 15:19:01,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870269059] [2020-08-18 15:19:01,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:19:01,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:19:01,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375529951] [2020-08-18 15:19:01,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:19:01,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:19:01,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:19:01,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:19:01,863 INFO L87 Difference]: Start difference. First operand 149 states and 177 transitions. Second operand 4 states. [2020-08-18 15:19:02,336 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:19:03,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:19:03,304 INFO L93 Difference]: Finished difference Result 274 states and 336 transitions. [2020-08-18 15:19:03,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 15:19:03,313 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 15:19:03,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:19:03,316 INFO L225 Difference]: With dead ends: 274 [2020-08-18 15:19:03,317 INFO L226 Difference]: Without dead ends: 167 [2020-08-18 15:19:03,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:19:03,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-18 15:19:03,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 140. [2020-08-18 15:19:03,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-18 15:19:03,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2020-08-18 15:19:03,389 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 53 [2020-08-18 15:19:03,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:19:03,390 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2020-08-18 15:19:03,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:19:03,390 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2020-08-18 15:19:03,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 15:19:03,402 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:19:03,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:19:03,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:19:03,403 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:19:03,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:19:03,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1292389066, now seen corresponding path program 1 times [2020-08-18 15:19:03,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:19:03,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158506388] [2020-08-18 15:19:03,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:19:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:03,740 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:19:03,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:19:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:03,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:19:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:03,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:19:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:03,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:19:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:03,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:19:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:03,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:19:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:03,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:19:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:03,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 15:19:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:03,852 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 15:19:03,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158506388] [2020-08-18 15:19:03,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:19:03,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 15:19:03,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679610229] [2020-08-18 15:19:03,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 15:19:03,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:19:03,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 15:19:03,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:19:03,859 INFO L87 Difference]: Start difference. First operand 140 states and 165 transitions. Second operand 8 states. [2020-08-18 15:19:04,251 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:19:04,550 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:19:04,793 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:19:05,044 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:19:06,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:19:06,392 INFO L93 Difference]: Finished difference Result 283 states and 350 transitions. [2020-08-18 15:19:06,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 15:19:06,393 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 15:19:06,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:19:06,396 INFO L225 Difference]: With dead ends: 283 [2020-08-18 15:19:06,397 INFO L226 Difference]: Without dead ends: 167 [2020-08-18 15:19:06,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:19:06,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-18 15:19:06,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 140. [2020-08-18 15:19:06,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-18 15:19:06,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2020-08-18 15:19:06,435 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 57 [2020-08-18 15:19:06,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:19:06,435 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2020-08-18 15:19:06,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 15:19:06,436 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2020-08-18 15:19:06,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 15:19:06,437 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:19:06,437 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] [2020-08-18 15:19:06,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 15:19:06,438 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:19:06,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:19:06,438 INFO L82 PathProgramCache]: Analyzing trace with hash 875217030, now seen corresponding path program 1 times [2020-08-18 15:19:06,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:19:06,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362396814] [2020-08-18 15:19:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:19:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:06,708 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:19:06,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:19:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:06,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:19:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:06,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:19:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:06,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:19:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:06,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:19:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:06,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 15:19:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:06,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:06,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:06,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:06,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 15:19:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:06,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:19:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:06,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 15:19:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:06,837 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 15:19:06,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362396814] [2020-08-18 15:19:06,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:19:06,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 15:19:06,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239179564] [2020-08-18 15:19:06,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 15:19:06,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:19:06,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 15:19:06,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:19:06,841 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand 6 states. [2020-08-18 15:19:07,177 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:19:08,343 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:19:09,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:19:09,136 INFO L93 Difference]: Finished difference Result 393 states and 487 transitions. [2020-08-18 15:19:09,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 15:19:09,136 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-08-18 15:19:09,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:19:09,140 INFO L225 Difference]: With dead ends: 393 [2020-08-18 15:19:09,141 INFO L226 Difference]: Without dead ends: 277 [2020-08-18 15:19:09,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 15:19:09,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-08-18 15:19:09,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 236. [2020-08-18 15:19:09,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-08-18 15:19:09,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 269 transitions. [2020-08-18 15:19:09,189 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 269 transitions. Word has length 75 [2020-08-18 15:19:09,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:19:09,190 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 269 transitions. [2020-08-18 15:19:09,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 15:19:09,190 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 269 transitions. [2020-08-18 15:19:09,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 15:19:09,191 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:19:09,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:19:09,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 15:19:09,192 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:19:09,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:19:09,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1332654256, now seen corresponding path program 1 times [2020-08-18 15:19:09,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:19:09,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561429347] [2020-08-18 15:19:09,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:19:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:09,477 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:19:09,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:19:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:09,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:19:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:09,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:19:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:09,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:19:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:09,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:19:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:09,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 15:19:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:09,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:09,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:09,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:09,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:19:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:09,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:19:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:09,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 15:19:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:09,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 15:19:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:09,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:19:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:09,677 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 15:19:09,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561429347] [2020-08-18 15:19:09,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:19:09,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 15:19:09,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797854736] [2020-08-18 15:19:09,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 15:19:09,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:19:09,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 15:19:09,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:19:09,680 INFO L87 Difference]: Start difference. First operand 236 states and 269 transitions. Second operand 8 states. [2020-08-18 15:19:10,116 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:19:11,395 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:19:11,678 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:19:11,924 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:19:12,156 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:19:13,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:19:13,074 INFO L93 Difference]: Finished difference Result 614 states and 761 transitions. [2020-08-18 15:19:13,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 15:19:13,075 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-08-18 15:19:13,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:19:13,079 INFO L225 Difference]: With dead ends: 614 [2020-08-18 15:19:13,080 INFO L226 Difference]: Without dead ends: 402 [2020-08-18 15:19:13,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 15:19:13,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-08-18 15:19:13,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 362. [2020-08-18 15:19:13,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-08-18 15:19:13,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 420 transitions. [2020-08-18 15:19:13,173 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 420 transitions. Word has length 89 [2020-08-18 15:19:13,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:19:13,173 INFO L479 AbstractCegarLoop]: Abstraction has 362 states and 420 transitions. [2020-08-18 15:19:13,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 15:19:13,174 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 420 transitions. [2020-08-18 15:19:13,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 15:19:13,175 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:19:13,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:19:13,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 15:19:13,176 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:19:13,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:19:13,176 INFO L82 PathProgramCache]: Analyzing trace with hash -920967306, now seen corresponding path program 1 times [2020-08-18 15:19:13,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:19:13,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802916702] [2020-08-18 15:19:13,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:19:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:13,443 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:19:13,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:19:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:13,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:19:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:13,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:19:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:13,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:19:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:13,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:19:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:13,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:19:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:13,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:19:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:13,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:13,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:13,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:13,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:19:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:13,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:19:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:13,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 15:19:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:13,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 15:19:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:13,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 15:19:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:13,613 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 15:19:13,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802916702] [2020-08-18 15:19:13,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:19:13,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 15:19:13,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941719064] [2020-08-18 15:19:13,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:19:13,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:19:13,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:19:13,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:19:13,616 INFO L87 Difference]: Start difference. First operand 362 states and 420 transitions. Second operand 9 states. [2020-08-18 15:19:14,102 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:19:14,654 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:19:16,098 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:19:18,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:19:18,166 INFO L93 Difference]: Finished difference Result 935 states and 1195 transitions. [2020-08-18 15:19:18,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 15:19:18,167 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-18 15:19:18,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:19:18,172 INFO L225 Difference]: With dead ends: 935 [2020-08-18 15:19:18,172 INFO L226 Difference]: Without dead ends: 712 [2020-08-18 15:19:18,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-18 15:19:18,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2020-08-18 15:19:18,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 646. [2020-08-18 15:19:18,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-08-18 15:19:18,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 781 transitions. [2020-08-18 15:19:18,316 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 781 transitions. Word has length 93 [2020-08-18 15:19:18,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:19:18,317 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 781 transitions. [2020-08-18 15:19:18,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:19:18,317 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 781 transitions. [2020-08-18 15:19:18,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 15:19:18,319 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:19:18,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:19:18,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 15:19:18,320 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:19:18,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:19:18,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1438339703, now seen corresponding path program 1 times [2020-08-18 15:19:18,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:19:18,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556484754] [2020-08-18 15:19:18,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:19:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:18,594 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:19:18,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:19:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:18,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:19:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:18,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:19:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:18,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:19:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:18,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:19:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:18,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:19:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:18,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:19:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:18,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:18,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:18,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:18,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:19:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:18,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:19:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:18,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 15:19:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:18,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 15:19:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:18,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 15:19:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:18,723 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 15:19:18,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556484754] [2020-08-18 15:19:18,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:19:18,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 15:19:18,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316570573] [2020-08-18 15:19:18,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 15:19:18,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:19:18,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 15:19:18,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:19:18,726 INFO L87 Difference]: Start difference. First operand 646 states and 781 transitions. Second operand 8 states. [2020-08-18 15:19:19,599 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:19:19,849 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:19:20,108 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:19:21,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:19:21,330 INFO L93 Difference]: Finished difference Result 1191 states and 1490 transitions. [2020-08-18 15:19:21,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 15:19:21,331 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-18 15:19:21,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:19:21,336 INFO L225 Difference]: With dead ends: 1191 [2020-08-18 15:19:21,336 INFO L226 Difference]: Without dead ends: 688 [2020-08-18 15:19:21,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:19:21,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2020-08-18 15:19:21,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 646. [2020-08-18 15:19:21,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-08-18 15:19:21,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 780 transitions. [2020-08-18 15:19:21,467 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 780 transitions. Word has length 93 [2020-08-18 15:19:21,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:19:21,468 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 780 transitions. [2020-08-18 15:19:21,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 15:19:21,468 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 780 transitions. [2020-08-18 15:19:21,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 15:19:21,470 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:19:21,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:19:21,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 15:19:21,470 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:19:21,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:19:21,471 INFO L82 PathProgramCache]: Analyzing trace with hash 2097871225, now seen corresponding path program 1 times [2020-08-18 15:19:21,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:19:21,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836052975] [2020-08-18 15:19:21,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:19:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:21,747 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:19:21,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:19:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:21,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:19:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:21,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:19:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:21,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:19:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:21,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:19:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:21,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:19:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:21,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:19:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:21,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:21,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:21,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:21,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:19:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:21,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:19:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:21,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 15:19:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:21,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 15:19:21,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:21,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 15:19:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:21,969 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 15:19:21,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836052975] [2020-08-18 15:19:21,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:19:21,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 15:19:21,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817900748] [2020-08-18 15:19:21,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:19:21,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:19:21,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:19:21,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:19:21,976 INFO L87 Difference]: Start difference. First operand 646 states and 780 transitions. Second operand 12 states. [2020-08-18 15:19:22,604 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:19:22,829 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:19:23,046 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:19:23,727 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:19:23,966 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:19:24,220 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:19:24,446 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:19:25,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:19:25,858 INFO L93 Difference]: Finished difference Result 1270 states and 1579 transitions. [2020-08-18 15:19:25,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 15:19:25,859 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-08-18 15:19:25,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:19:25,868 INFO L225 Difference]: With dead ends: 1270 [2020-08-18 15:19:25,868 INFO L226 Difference]: Without dead ends: 648 [2020-08-18 15:19:25,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-18 15:19:25,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-08-18 15:19:25,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 617. [2020-08-18 15:19:25,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-18 15:19:25,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 740 transitions. [2020-08-18 15:19:25,998 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 740 transitions. Word has length 93 [2020-08-18 15:19:25,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:19:25,999 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 740 transitions. [2020-08-18 15:19:25,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:19:25,999 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 740 transitions. [2020-08-18 15:19:26,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 15:19:26,003 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:19:26,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:19:26,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 15:19:26,003 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:19:26,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:19:26,004 INFO L82 PathProgramCache]: Analyzing trace with hash 791892564, now seen corresponding path program 1 times [2020-08-18 15:19:26,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:19:26,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425296134] [2020-08-18 15:19:26,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:19:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:26,320 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:19:26,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:19:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:26,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:19:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:26,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:19:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:26,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:19:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:26,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:19:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:26,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:19:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:26,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:19:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:26,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:26,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:26,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:26,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:19:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:26,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:19:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:26,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:19:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:26,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 15:19:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:26,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 15:19:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:26,459 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 15:19:26,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425296134] [2020-08-18 15:19:26,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:19:26,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 15:19:26,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596315922] [2020-08-18 15:19:26,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 15:19:26,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:19:26,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 15:19:26,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-18 15:19:26,462 INFO L87 Difference]: Start difference. First operand 617 states and 740 transitions. Second operand 13 states. [2020-08-18 15:19:27,194 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:19:27,444 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:19:27,675 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:19:28,616 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:19:29,201 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:19:29,508 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:19:29,769 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:19:30,452 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:19:30,780 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:19:31,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:19:31,204 INFO L93 Difference]: Finished difference Result 1241 states and 1503 transitions. [2020-08-18 15:19:31,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 15:19:31,205 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 94 [2020-08-18 15:19:31,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:19:31,210 INFO L225 Difference]: With dead ends: 1241 [2020-08-18 15:19:31,210 INFO L226 Difference]: Without dead ends: 648 [2020-08-18 15:19:31,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-08-18 15:19:31,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-08-18 15:19:31,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 617. [2020-08-18 15:19:31,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-18 15:19:31,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 724 transitions. [2020-08-18 15:19:31,324 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 724 transitions. Word has length 94 [2020-08-18 15:19:31,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:19:31,324 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 724 transitions. [2020-08-18 15:19:31,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 15:19:31,324 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 724 transitions. [2020-08-18 15:19:31,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-18 15:19:31,327 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:19:31,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:31,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 15:19:31,328 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:19:31,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:19:31,328 INFO L82 PathProgramCache]: Analyzing trace with hash -361137762, now seen corresponding path program 1 times [2020-08-18 15:19:31,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:19:31,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542296286] [2020-08-18 15:19:31,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:19:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:31,576 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:19:31,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:19:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:31,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:19:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:31,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:19:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:31,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:19:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:31,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:19:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:31,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:19:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:31,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:31,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:31,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:31,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:31,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:19:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:31,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:19:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:31,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 15:19:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:31,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:19:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:31,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 15:19:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:31,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 15:19:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:31,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:31,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:19:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:31,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 15:19:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:31,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-18 15:19:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:31,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 15:19:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:31,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:19:31,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:31,792 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 15:19:31,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542296286] [2020-08-18 15:19:31,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:19:31,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 15:19:31,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315330255] [2020-08-18 15:19:31,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 15:19:31,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:19:31,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 15:19:31,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:19:31,796 INFO L87 Difference]: Start difference. First operand 617 states and 724 transitions. Second operand 10 states. [2020-08-18 15:19:32,845 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:19:33,100 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:19:33,353 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:19:33,595 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:19:34,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:19:34,642 INFO L93 Difference]: Finished difference Result 1154 states and 1382 transitions. [2020-08-18 15:19:34,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 15:19:34,644 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 137 [2020-08-18 15:19:34,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:19:34,648 INFO L225 Difference]: With dead ends: 1154 [2020-08-18 15:19:34,648 INFO L226 Difference]: Without dead ends: 636 [2020-08-18 15:19:34,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 15:19:34,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2020-08-18 15:19:34,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 617. [2020-08-18 15:19:34,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-18 15:19:34,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 722 transitions. [2020-08-18 15:19:34,778 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 722 transitions. Word has length 137 [2020-08-18 15:19:34,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:19:34,779 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 722 transitions. [2020-08-18 15:19:34,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 15:19:34,779 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 722 transitions. [2020-08-18 15:19:34,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-18 15:19:34,780 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:19:34,781 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:34,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 15:19:34,781 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:19:34,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:19:34,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1515345056, now seen corresponding path program 1 times [2020-08-18 15:19:34,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:19:34,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147762009] [2020-08-18 15:19:34,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:19:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:35,076 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:19:35,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:19:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:35,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:19:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:35,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:19:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:35,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:19:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:35,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:19:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:35,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:19:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:35,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:35,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:35,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:35,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:35,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:19:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:35,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:19:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:35,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 15:19:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:35,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:19:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:35,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 15:19:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:35,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 15:19:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:35,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:35,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:19:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:35,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 15:19:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:35,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-18 15:19:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:35,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 15:19:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:35,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:19:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:35,298 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 15:19:35,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147762009] [2020-08-18 15:19:35,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:19:35,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 15:19:35,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639709022] [2020-08-18 15:19:35,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:19:35,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:19:35,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:19:35,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:19:35,302 INFO L87 Difference]: Start difference. First operand 617 states and 722 transitions. Second operand 12 states. [2020-08-18 15:19:35,787 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:19:36,031 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:19:36,264 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:19:36,834 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:19:37,081 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:19:37,301 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:19:38,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:19:38,400 INFO L93 Difference]: Finished difference Result 1066 states and 1276 transitions. [2020-08-18 15:19:38,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 15:19:38,401 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 137 [2020-08-18 15:19:38,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:19:38,404 INFO L225 Difference]: With dead ends: 1066 [2020-08-18 15:19:38,404 INFO L226 Difference]: Without dead ends: 543 [2020-08-18 15:19:38,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 15:19:38,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2020-08-18 15:19:38,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 524. [2020-08-18 15:19:38,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-18 15:19:38,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 611 transitions. [2020-08-18 15:19:38,495 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 611 transitions. Word has length 137 [2020-08-18 15:19:38,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:19:38,495 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 611 transitions. [2020-08-18 15:19:38,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:19:38,496 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 611 transitions. [2020-08-18 15:19:38,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-18 15:19:38,497 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:19:38,497 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:38,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 15:19:38,498 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:19:38,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:19:38,498 INFO L82 PathProgramCache]: Analyzing trace with hash -834613817, now seen corresponding path program 1 times [2020-08-18 15:19:38,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:19:38,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195009032] [2020-08-18 15:19:38,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:19:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:38,747 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:19:38,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:19:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:38,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:19:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:38,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:19:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:38,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:19:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:38,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:19:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:38,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:19:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:38,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 15:19:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:38,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:38,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:38,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:38,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:38,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:19:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:38,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:19:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:38,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 15:19:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:38,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:19:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:38,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 15:19:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:38,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 15:19:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:38,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:38,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:19:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:38,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 15:19:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:38,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-18 15:19:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:38,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 15:19:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:38,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 15:19:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:38,972 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-18 15:19:38,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195009032] [2020-08-18 15:19:38,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:19:38,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 15:19:38,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244811311] [2020-08-18 15:19:38,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 15:19:38,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:19:38,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 15:19:38,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 15:19:38,976 INFO L87 Difference]: Start difference. First operand 524 states and 611 transitions. Second operand 11 states. [2020-08-18 15:19:39,557 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:19:40,118 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:19:40,977 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:19:41,464 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-18 15:19:41,956 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-18 15:19:42,197 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:19:43,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:19:43,741 INFO L93 Difference]: Finished difference Result 1550 states and 1871 transitions. [2020-08-18 15:19:43,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 15:19:43,746 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 141 [2020-08-18 15:19:43,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:19:43,752 INFO L225 Difference]: With dead ends: 1550 [2020-08-18 15:19:43,753 INFO L226 Difference]: Without dead ends: 1050 [2020-08-18 15:19:43,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-08-18 15:19:43,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-08-18 15:19:43,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1021. [2020-08-18 15:19:43,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1021 states. [2020-08-18 15:19:43,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1176 transitions. [2020-08-18 15:19:43,985 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1176 transitions. Word has length 141 [2020-08-18 15:19:43,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:19:43,987 INFO L479 AbstractCegarLoop]: Abstraction has 1021 states and 1176 transitions. [2020-08-18 15:19:43,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 15:19:43,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1176 transitions. [2020-08-18 15:19:43,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-18 15:19:43,989 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:19:43,989 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:19:43,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 15:19:43,990 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:19:43,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:19:43,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1626419797, now seen corresponding path program 1 times [2020-08-18 15:19:43,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:19:43,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905998698] [2020-08-18 15:19:43,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:19:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,261 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:19:44,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:19:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:19:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:19:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:19:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:19:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:19:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 15:19:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 15:19:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:19:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:19:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 15:19:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:19:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:19:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 15:19:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:19:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 15:19:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 15:19:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 15:19:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 15:19:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:44,441 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 15:19:44,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905998698] [2020-08-18 15:19:44,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:19:44,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 15:19:44,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226153705] [2020-08-18 15:19:44,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 15:19:44,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:19:44,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 15:19:44,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 15:19:44,443 INFO L87 Difference]: Start difference. First operand 1021 states and 1176 transitions. Second operand 15 states. [2020-08-18 15:19:45,162 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:19:45,415 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:19:45,657 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:19:46,242 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:19:47,334 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:19:47,682 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:19:47,975 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:19:48,233 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:19:50,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:19:50,208 INFO L93 Difference]: Finished difference Result 2052 states and 2452 transitions. [2020-08-18 15:19:50,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 15:19:50,209 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 145 [2020-08-18 15:19:50,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:19:50,215 INFO L225 Difference]: With dead ends: 2052 [2020-08-18 15:19:50,215 INFO L226 Difference]: Without dead ends: 1055 [2020-08-18 15:19:50,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2020-08-18 15:19:50,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2020-08-18 15:19:50,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 955. [2020-08-18 15:19:50,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 955 states. [2020-08-18 15:19:50,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1097 transitions. [2020-08-18 15:19:50,427 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1097 transitions. Word has length 145 [2020-08-18 15:19:50,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:19:50,428 INFO L479 AbstractCegarLoop]: Abstraction has 955 states and 1097 transitions. [2020-08-18 15:19:50,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 15:19:50,428 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1097 transitions. [2020-08-18 15:19:50,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 15:19:50,431 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:19:50,432 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:50,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 15:19:50,432 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:19:50,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:19:50,433 INFO L82 PathProgramCache]: Analyzing trace with hash -248365737, now seen corresponding path program 1 times [2020-08-18 15:19:50,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:19:50,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116814668] [2020-08-18 15:19:50,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:19:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,684 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:19:50,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:19:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:19:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:19:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:19:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:19:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:19:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 15:19:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:50,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:19:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:19:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 15:19:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:19:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 15:19:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 15:19:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:19:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:19:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:19:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 15:19:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 15:19:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 15:19:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 15:19:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:19:50,925 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-08-18 15:19:50,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116814668] [2020-08-18 15:19:50,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:19:50,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 15:19:50,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757978552] [2020-08-18 15:19:50,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 15:19:50,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:19:50,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 15:19:50,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 15:19:50,927 INFO L87 Difference]: Start difference. First operand 955 states and 1097 transitions. Second operand 15 states. [2020-08-18 15:19:51,671 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:19:52,475 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:19:53,569 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:19:53,925 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189