/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 19:22:37,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:22:37,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:22:37,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:22:37,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:22:37,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:22:37,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:22:37,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:22:37,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:22:37,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:22:37,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:22:37,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:22:37,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:22:37,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:22:37,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:22:37,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:22:37,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:22:37,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:22:37,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:22:37,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:22:37,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:22:37,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:22:37,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:22:37,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:22:37,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 19:22:37,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 19:22:37,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 19:22:37,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 19:22:37,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 19:22:37,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 19:22:37,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 19:22:37,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 19:22:37,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 19:22:37,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 19:22:37,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 19:22:37,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 19:22:37,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 19:22:37,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 19:22:37,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:22:37,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:22:37,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:22:37,878 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 19:22:37,922 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:22:37,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:22:37,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:22:37,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:22:37,925 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:22:37,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:22:37,926 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:22:37,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:22:37,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:22:37,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:22:37,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:22:37,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:22:37,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:22:37,927 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:22:37,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:22:37,927 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:22:37,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:22:37,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:22:37,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:22:37,929 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:22:37,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:22:37,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:22:37,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:22:37,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:22:37,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:22:37,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:22:37,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:22:37,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:22:37,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:22:37,931 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:22:38,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:22:38,258 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:22:38,265 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:22:38,266 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:22:38,267 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:22:38,267 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2020-08-18 19:22:38,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ee33e3f1/cf191dba593e411484936dc6a09f0853/FLAG80e42f8c8 [2020-08-18 19:22:38,864 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:22:38,865 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2020-08-18 19:22:38,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ee33e3f1/cf191dba593e411484936dc6a09f0853/FLAG80e42f8c8 [2020-08-18 19:22:39,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ee33e3f1/cf191dba593e411484936dc6a09f0853 [2020-08-18 19:22:39,142 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:22:39,143 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:22:39,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:22:39,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:22:39,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:22:39,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:22:39" (1/1) ... [2020-08-18 19:22:39,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@299a8297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:22:39, skipping insertion in model container [2020-08-18 19:22:39,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:22:39" (1/1) ... [2020-08-18 19:22:39,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:22:39,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:22:39,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:22:39,572 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:22:39,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:22:39,818 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:22:39,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:22:39 WrapperNode [2020-08-18 19:22:39,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:22:39,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:22:39,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:22:39,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:22:39,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:22:39" (1/1) ... [2020-08-18 19:22:39,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:22:39" (1/1) ... [2020-08-18 19:22:39,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:22:39" (1/1) ... [2020-08-18 19:22:39,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:22:39" (1/1) ... [2020-08-18 19:22:39,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:22:39" (1/1) ... [2020-08-18 19:22:39,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:22:39" (1/1) ... [2020-08-18 19:22:39,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:22:39" (1/1) ... [2020-08-18 19:22:39,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:22:39,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:22:39,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:22:39,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:22:39,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:22:39" (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 19:22:40,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:22:40,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:22:40,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 19:22:40,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 19:22:40,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 19:22:40,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 19:22:40,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 19:22:40,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 19:22:40,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 19:22:40,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 19:22:40,009 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 19:22:40,009 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 19:22:40,009 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 19:22:40,009 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 19:22:40,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:22:40,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 19:22:40,010 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 19:22:40,010 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 19:22:40,010 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 19:22:40,010 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 19:22:40,010 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 19:22:40,011 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 19:22:40,011 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 19:22:40,011 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 19:22:40,011 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 19:22:40,011 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 19:22:40,011 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 19:22:40,011 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 19:22:40,012 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 19:22:40,012 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 19:22:40,012 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 19:22:40,012 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 19:22:40,012 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 19:22:40,012 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 19:22:40,013 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 19:22:40,013 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 19:22:40,013 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 19:22:40,013 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 19:22:40,013 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 19:22:40,013 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 19:22:40,014 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 19:22:40,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:22:40,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:22:40,014 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 19:22:40,014 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 19:22:40,014 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 19:22:40,014 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 19:22:40,015 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 19:22:40,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 19:22:40,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 19:22:40,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 19:22:40,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 19:22:40,015 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 19:22:40,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 19:22:40,016 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 19:22:40,016 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 19:22:40,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 19:22:40,016 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 19:22:40,016 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 19:22:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 19:22:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 19:22:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 19:22:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 19:22:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 19:22:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 19:22:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 19:22:40,018 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 19:22:40,018 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 19:22:40,018 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 19:22:40,018 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 19:22:40,018 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 19:22:40,018 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 19:22:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 19:22:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 19:22:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 19:22:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 19:22:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 19:22:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:22:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 19:22:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 19:22:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 19:22:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 19:22:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 19:22:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 19:22:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 19:22:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 19:22:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 19:22:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 19:22:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 19:22:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 19:22:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 19:22:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 19:22:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 19:22:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:22:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 19:22:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:22:41,054 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:22:41,054 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 19:22:41,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:22:41 BoogieIcfgContainer [2020-08-18 19:22:41,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:22:41,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:22:41,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:22:41,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:22:41,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:22:39" (1/3) ... [2020-08-18 19:22:41,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b50c9d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:22:41, skipping insertion in model container [2020-08-18 19:22:41,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:22:39" (2/3) ... [2020-08-18 19:22:41,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b50c9d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:22:41, skipping insertion in model container [2020-08-18 19:22:41,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:22:41" (3/3) ... [2020-08-18 19:22:41,070 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product50.cil.c [2020-08-18 19:22:41,082 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:22:41,091 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:22:41,105 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:22:41,132 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:22:41,132 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:22:41,132 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:22:41,132 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:22:41,133 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:22:41,133 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:22:41,133 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:22:41,133 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:22:41,156 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-18 19:22:41,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 19:22:41,166 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:22:41,167 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] [2020-08-18 19:22:41,168 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:22:41,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:22:41,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1488722281, now seen corresponding path program 1 times [2020-08-18 19:22:41,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:22:41,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382622686] [2020-08-18 19:22:41,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:22:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:41,932 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:22:41,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:22:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:42,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:22:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:42,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:22:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:42,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:22:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:42,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:22:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:42,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:22:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:42,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:22:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:42,029 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 19:22:42,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382622686] [2020-08-18 19:22:42,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:22:42,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 19:22:42,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037855315] [2020-08-18 19:22:42,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 19:22:42,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:22:42,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 19:22:42,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 19:22:42,056 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 3 states. [2020-08-18 19:22:43,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:22:43,161 INFO L93 Difference]: Finished difference Result 306 states and 398 transitions. [2020-08-18 19:22:43,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 19:22:43,163 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 19:22:43,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:22:43,178 INFO L225 Difference]: With dead ends: 306 [2020-08-18 19:22:43,178 INFO L226 Difference]: Without dead ends: 165 [2020-08-18 19:22:43,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 19:22:43,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-18 19:22:43,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-08-18 19:22:43,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-18 19:22:43,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2020-08-18 19:22:43,273 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 46 [2020-08-18 19:22:43,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:22:43,274 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2020-08-18 19:22:43,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 19:22:43,274 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2020-08-18 19:22:43,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 19:22:43,279 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:22:43,279 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] [2020-08-18 19:22:43,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:22:43,280 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:22:43,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:22:43,280 INFO L82 PathProgramCache]: Analyzing trace with hash 469599371, now seen corresponding path program 1 times [2020-08-18 19:22:43,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:22:43,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215761613] [2020-08-18 19:22:43,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:22:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:43,708 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:22:43,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:22:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:43,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:22:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:43,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:22:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:43,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:22:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:43,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:22:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:43,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 19:22:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:43,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 19:22:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:43,755 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 19:22:43,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215761613] [2020-08-18 19:22:43,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:22:43,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:22:43,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633880093] [2020-08-18 19:22:43,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:22:43,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:22:43,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:22:43,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:22:43,760 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand 4 states. [2020-08-18 19:22:44,185 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:22:45,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:22:45,029 INFO L93 Difference]: Finished difference Result 235 states and 285 transitions. [2020-08-18 19:22:45,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 19:22:45,030 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 19:22:45,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:22:45,033 INFO L225 Difference]: With dead ends: 235 [2020-08-18 19:22:45,033 INFO L226 Difference]: Without dead ends: 149 [2020-08-18 19:22:45,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:22:45,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-18 19:22:45,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-18 19:22:45,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 19:22:45,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-08-18 19:22:45,075 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 47 [2020-08-18 19:22:45,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:22:45,076 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-08-18 19:22:45,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:22:45,076 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-08-18 19:22:45,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 19:22:45,078 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:22:45,078 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 19:22:45,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:22:45,079 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:22:45,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:22:45,079 INFO L82 PathProgramCache]: Analyzing trace with hash 305445596, now seen corresponding path program 1 times [2020-08-18 19:22:45,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:22:45,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265880804] [2020-08-18 19:22:45,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:22:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:45,407 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:22:45,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:22:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:45,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:22:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:45,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:22:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:45,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:22:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:45,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:22:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:45,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:22:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:45,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 19:22:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:45,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:22:45,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265880804] [2020-08-18 19:22:45,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:22:45,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 19:22:45,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289297387] [2020-08-18 19:22:45,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:22:45,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:22:45,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:22:45,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:22:45,513 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 8 states. [2020-08-18 19:22:45,861 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:22:46,116 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:22:46,355 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:22:46,573 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:22:47,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:22:47,776 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2020-08-18 19:22:47,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 19:22:47,777 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 19:22:47,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:22:47,780 INFO L225 Difference]: With dead ends: 248 [2020-08-18 19:22:47,781 INFO L226 Difference]: Without dead ends: 149 [2020-08-18 19:22:47,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:22:47,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-18 19:22:47,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-18 19:22:47,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 19:22:47,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2020-08-18 19:22:47,814 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 52 [2020-08-18 19:22:47,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:22:47,815 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2020-08-18 19:22:47,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:22:47,815 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2020-08-18 19:22:47,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 19:22:47,818 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:22:47,818 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] [2020-08-18 19:22:47,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:22:47,818 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:22:47,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:22:47,819 INFO L82 PathProgramCache]: Analyzing trace with hash 892474279, now seen corresponding path program 1 times [2020-08-18 19:22:47,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:22:47,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187422986] [2020-08-18 19:22:47,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:22:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:48,077 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:22:48,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:22:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:48,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:22:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:48,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:22:48,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:48,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:22:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:48,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:22:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:48,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:22:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:48,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:48,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:48,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 19:22:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:48,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 19:22:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:48,152 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 19:22:48,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187422986] [2020-08-18 19:22:48,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:22:48,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 19:22:48,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381830355] [2020-08-18 19:22:48,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 19:22:48,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:22:48,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 19:22:48,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 19:22:48,155 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand 6 states. [2020-08-18 19:22:48,485 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:22:49,573 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:22:50,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:22:50,281 INFO L93 Difference]: Finished difference Result 345 states and 425 transitions. [2020-08-18 19:22:50,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 19:22:50,286 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-18 19:22:50,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:22:50,295 INFO L225 Difference]: With dead ends: 345 [2020-08-18 19:22:50,295 INFO L226 Difference]: Without dead ends: 246 [2020-08-18 19:22:50,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:22:50,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-18 19:22:50,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 203. [2020-08-18 19:22:50,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-08-18 19:22:50,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 230 transitions. [2020-08-18 19:22:50,357 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 230 transitions. Word has length 65 [2020-08-18 19:22:50,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:22:50,358 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 230 transitions. [2020-08-18 19:22:50,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 19:22:50,358 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 230 transitions. [2020-08-18 19:22:50,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 19:22:50,361 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:22:50,361 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] [2020-08-18 19:22:50,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:22:50,361 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:22:50,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:22:50,362 INFO L82 PathProgramCache]: Analyzing trace with hash 861206730, now seen corresponding path program 1 times [2020-08-18 19:22:50,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:22:50,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850560549] [2020-08-18 19:22:50,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:22:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:50,664 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:22:50,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:22:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:50,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:22:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:50,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:22:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:50,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:22:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:50,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:22:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:50,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:22:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:50,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:50,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:50,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:22:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:50,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:22:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:50,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 19:22:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:50,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 19:22:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:50,769 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 19:22:50,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850560549] [2020-08-18 19:22:50,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:22:50,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 19:22:50,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885441985] [2020-08-18 19:22:50,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 19:22:50,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:22:50,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 19:22:50,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:22:50,772 INFO L87 Difference]: Start difference. First operand 203 states and 230 transitions. Second operand 12 states. [2020-08-18 19:22:51,232 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:22:51,572 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:22:51,821 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:22:52,055 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:22:52,583 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:22:53,474 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:22:53,757 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:22:53,989 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:22:54,234 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:22:54,502 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:22:54,773 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:22:56,074 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:22:56,413 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:22:57,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:22:57,059 INFO L93 Difference]: Finished difference Result 713 states and 919 transitions. [2020-08-18 19:22:57,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 19:22:57,060 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-18 19:22:57,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:22:57,066 INFO L225 Difference]: With dead ends: 713 [2020-08-18 19:22:57,066 INFO L226 Difference]: Without dead ends: 534 [2020-08-18 19:22:57,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 19:22:57,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-08-18 19:22:57,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 472. [2020-08-18 19:22:57,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-08-18 19:22:57,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 553 transitions. [2020-08-18 19:22:57,169 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 553 transitions. Word has length 79 [2020-08-18 19:22:57,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:22:57,169 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 553 transitions. [2020-08-18 19:22:57,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 19:22:57,169 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 553 transitions. [2020-08-18 19:22:57,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-18 19:22:57,173 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:22:57,173 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:22:57,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 19:22:57,174 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:22:57,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:22:57,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1327678130, now seen corresponding path program 1 times [2020-08-18 19:22:57,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:22:57,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402706486] [2020-08-18 19:22:57,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:22:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:57,434 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:22:57,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:22:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:57,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:22:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:57,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:22:57,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:57,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:22:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:57,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:22:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:57,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 19:22:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:57,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:22:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:57,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:57,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:57,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:57,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:22:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:57,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:22:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:57,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:22:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:57,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:22:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:57,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 19:22:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:57,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 19:22:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:57,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 19:22:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:57,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:57,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:22:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:57,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:22:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:57,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 19:22:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:57,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-18 19:22:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-18 19:22:57,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402706486] [2020-08-18 19:22:57,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:22:57,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 19:22:57,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288283746] [2020-08-18 19:22:57,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 19:22:57,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:22:57,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 19:22:57,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 19:22:57,667 INFO L87 Difference]: Start difference. First operand 472 states and 553 transitions. Second operand 13 states. [2020-08-18 19:22:58,090 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:22:58,735 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:22:59,329 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:22:59,590 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 19:22:59,857 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:23:00,102 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:23:00,335 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:23:00,601 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 19:23:00,919 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:23:01,170 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:23:02,648 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:02,899 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:23:03,168 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:03,412 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:03,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:23:03,819 INFO L93 Difference]: Finished difference Result 957 states and 1212 transitions. [2020-08-18 19:23:03,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 19:23:03,820 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 138 [2020-08-18 19:23:03,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:23:03,827 INFO L225 Difference]: With dead ends: 957 [2020-08-18 19:23:03,828 INFO L226 Difference]: Without dead ends: 509 [2020-08-18 19:23:03,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-18 19:23:03,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-08-18 19:23:03,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 442. [2020-08-18 19:23:03,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-08-18 19:23:03,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 521 transitions. [2020-08-18 19:23:03,931 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 521 transitions. Word has length 138 [2020-08-18 19:23:03,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:23:03,931 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 521 transitions. [2020-08-18 19:23:03,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 19:23:03,931 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 521 transitions. [2020-08-18 19:23:03,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-18 19:23:03,935 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:23:03,935 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:23:03,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 19:23:03,937 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:23:03,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:23:03,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1681399932, now seen corresponding path program 1 times [2020-08-18 19:23:03,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:23:03,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394666802] [2020-08-18 19:23:03,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:23:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:04,276 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:23:04,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:23:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:04,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:23:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:04,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:23:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:04,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:23:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:04,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:23:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:04,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 19:23:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:04,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:04,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:04,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:04,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:04,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:23:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:04,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:23:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:04,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:04,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 19:23:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:04,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 19:23:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:04,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:04,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:04,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:23:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:04,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 19:23:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:04,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 19:23:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:04,479 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 19:23:04,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394666802] [2020-08-18 19:23:04,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:23:04,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 19:23:04,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475215958] [2020-08-18 19:23:04,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 19:23:04,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:23:04,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 19:23:04,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:23:04,482 INFO L87 Difference]: Start difference. First operand 442 states and 521 transitions. Second operand 12 states. [2020-08-18 19:23:04,932 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:05,166 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:05,411 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:05,975 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:06,213 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:06,432 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:07,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:23:07,309 INFO L93 Difference]: Finished difference Result 807 states and 985 transitions. [2020-08-18 19:23:07,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:23:07,312 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-18 19:23:07,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:23:07,315 INFO L225 Difference]: With dead ends: 807 [2020-08-18 19:23:07,316 INFO L226 Difference]: Without dead ends: 389 [2020-08-18 19:23:07,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 19:23:07,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-08-18 19:23:07,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 363. [2020-08-18 19:23:07,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-08-18 19:23:07,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 425 transitions. [2020-08-18 19:23:07,401 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 425 transitions. Word has length 130 [2020-08-18 19:23:07,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:23:07,401 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 425 transitions. [2020-08-18 19:23:07,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 19:23:07,402 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 425 transitions. [2020-08-18 19:23:07,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 19:23:07,407 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:23:07,407 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:23:07,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 19:23:07,407 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:23:07,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:23:07,408 INFO L82 PathProgramCache]: Analyzing trace with hash 34208085, now seen corresponding path program 1 times [2020-08-18 19:23:07,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:23:07,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776476461] [2020-08-18 19:23:07,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:23:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:07,692 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:23:07,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:23:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:07,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:23:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:07,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:23:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:07,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:23:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:07,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:23:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:07,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 19:23:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:07,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:23:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:07,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:07,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:07,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:07,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:07,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:23:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:07,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:23:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:07,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:07,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 19:23:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:07,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 19:23:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:07,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:07,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:07,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:23:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:07,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 19:23:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:07,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-18 19:23:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-18 19:23:07,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776476461] [2020-08-18 19:23:07,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:23:07,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 19:23:07,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278616856] [2020-08-18 19:23:07,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 19:23:07,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:23:07,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 19:23:07,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:23:07,886 INFO L87 Difference]: Start difference. First operand 363 states and 425 transitions. Second operand 10 states. [2020-08-18 19:23:09,280 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:09,525 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:23:09,778 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:10,030 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:10,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:23:10,413 INFO L93 Difference]: Finished difference Result 670 states and 812 transitions. [2020-08-18 19:23:10,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 19:23:10,419 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-18 19:23:10,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:23:10,424 INFO L225 Difference]: With dead ends: 670 [2020-08-18 19:23:10,425 INFO L226 Difference]: Without dead ends: 394 [2020-08-18 19:23:10,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:23:10,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-08-18 19:23:10,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 368. [2020-08-18 19:23:10,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-18 19:23:10,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 430 transitions. [2020-08-18 19:23:10,494 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 430 transitions. Word has length 134 [2020-08-18 19:23:10,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:23:10,494 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 430 transitions. [2020-08-18 19:23:10,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 19:23:10,495 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 430 transitions. [2020-08-18 19:23:10,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 19:23:10,496 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:23:10,497 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:23:10,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 19:23:10,497 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:23:10,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:23:10,497 INFO L82 PathProgramCache]: Analyzing trace with hash -475265005, now seen corresponding path program 1 times [2020-08-18 19:23:10,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:23:10,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415457870] [2020-08-18 19:23:10,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:23:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:10,816 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:23:10,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:23:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:10,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:23:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:10,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:23:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:10,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:23:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:10,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:23:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:10,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 19:23:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:10,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:23:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:10,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:10,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:10,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:10,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:10,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:23:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:10,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:23:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:10,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:10,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 19:23:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:10,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 19:23:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:10,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:10,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:10,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:23:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:10,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 19:23:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:10,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-18 19:23:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:10,990 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-18 19:23:10,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415457870] [2020-08-18 19:23:10,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:23:10,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 19:23:10,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482237660] [2020-08-18 19:23:10,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 19:23:10,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:23:10,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 19:23:10,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:23:10,994 INFO L87 Difference]: Start difference. First operand 368 states and 430 transitions. Second operand 10 states. [2020-08-18 19:23:11,549 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:23:13,107 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:13,378 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:13,623 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:13,866 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:23:14,160 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:14,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:23:14,526 INFO L93 Difference]: Finished difference Result 401 states and 482 transitions. [2020-08-18 19:23:14,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 19:23:14,527 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-18 19:23:14,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:23:14,531 INFO L225 Difference]: With dead ends: 401 [2020-08-18 19:23:14,532 INFO L226 Difference]: Without dead ends: 398 [2020-08-18 19:23:14,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 19:23:14,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-08-18 19:23:14,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 368. [2020-08-18 19:23:14,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-18 19:23:14,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 429 transitions. [2020-08-18 19:23:14,601 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 429 transitions. Word has length 134 [2020-08-18 19:23:14,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:23:14,602 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 429 transitions. [2020-08-18 19:23:14,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 19:23:14,602 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 429 transitions. [2020-08-18 19:23:14,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-18 19:23:14,605 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:23:14,605 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:23:14,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 19:23:14,606 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:23:14,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:23:14,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1918338429, now seen corresponding path program 1 times [2020-08-18 19:23:14,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:23:14,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633095656] [2020-08-18 19:23:14,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:23:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:14,971 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:23:14,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:23:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:14,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:23:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:14,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:23:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:14,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:23:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:14,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:23:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:15,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 19:23:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:15,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:23:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:15,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:15,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:15,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:15,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:15,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:23:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:15,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:23:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:15,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:15,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 19:23:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:15,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 19:23:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:15,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:15,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:15,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:23:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:15,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:15,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 19:23:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:15,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-18 19:23:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:15,237 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 19:23:15,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633095656] [2020-08-18 19:23:15,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:23:15,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 19:23:15,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369306032] [2020-08-18 19:23:15,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 19:23:15,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:23:15,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 19:23:15,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:23:15,242 INFO L87 Difference]: Start difference. First operand 368 states and 429 transitions. Second operand 12 states. [2020-08-18 19:23:15,902 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:16,711 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:23:17,242 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:23:17,523 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:23:17,774 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:23:18,015 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:18,275 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:23:18,513 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:23:20,014 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:23:20,271 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:20,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:23:20,996 INFO L93 Difference]: Finished difference Result 881 states and 1104 transitions. [2020-08-18 19:23:20,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 19:23:20,997 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 138 [2020-08-18 19:23:20,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:23:21,002 INFO L225 Difference]: With dead ends: 881 [2020-08-18 19:23:21,002 INFO L226 Difference]: Without dead ends: 600 [2020-08-18 19:23:21,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-18 19:23:21,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-08-18 19:23:21,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 513. [2020-08-18 19:23:21,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-08-18 19:23:21,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 606 transitions. [2020-08-18 19:23:21,093 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 606 transitions. Word has length 138 [2020-08-18 19:23:21,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:23:21,094 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 606 transitions. [2020-08-18 19:23:21,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 19:23:21,094 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 606 transitions. [2020-08-18 19:23:21,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-08-18 19:23:21,099 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:23:21,099 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:23:21,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 19:23:21,100 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:23:21,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:23:21,100 INFO L82 PathProgramCache]: Analyzing trace with hash -169355685, now seen corresponding path program 2 times [2020-08-18 19:23:21,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:23:21,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149977897] [2020-08-18 19:23:21,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:23:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,506 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:23:21,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:23:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:23:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:23:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:23:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:23:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 19:23:21,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:23:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:23:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:23:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 19:23:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:23:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:23:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:23:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-18 19:23:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-18 19:23:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-08-18 19:23:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:23:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-18 19:23:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-18 19:23:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:21,897 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 39 proven. 22 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-18 19:23:21,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149977897] [2020-08-18 19:23:21,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:23:21,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 19:23:21,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265095090] [2020-08-18 19:23:21,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 19:23:21,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:23:21,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 19:23:21,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:23:21,903 INFO L87 Difference]: Start difference. First operand 513 states and 606 transitions. Second operand 14 states. [2020-08-18 19:23:22,395 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:23:23,211 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:23:24,367 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:24,640 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:23:24,889 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:23:25,120 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:25,374 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:23:25,611 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:23:26,929 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:23:27,185 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:28,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:23:28,357 INFO L93 Difference]: Finished difference Result 1240 states and 1606 transitions. [2020-08-18 19:23:28,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 19:23:28,358 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 196 [2020-08-18 19:23:28,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:23:28,364 INFO L225 Difference]: With dead ends: 1240 [2020-08-18 19:23:28,364 INFO L226 Difference]: Without dead ends: 814 [2020-08-18 19:23:28,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2020-08-18 19:23:28,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2020-08-18 19:23:28,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 511. [2020-08-18 19:23:28,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-18 19:23:28,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 603 transitions. [2020-08-18 19:23:28,470 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 603 transitions. Word has length 196 [2020-08-18 19:23:28,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:23:28,471 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 603 transitions. [2020-08-18 19:23:28,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 19:23:28,471 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 603 transitions. [2020-08-18 19:23:28,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-18 19:23:28,474 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:23:28,474 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:23:28,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 19:23:28,475 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:23:28,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:23:28,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1150491295, now seen corresponding path program 3 times [2020-08-18 19:23:28,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:23:28,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846164702] [2020-08-18 19:23:28,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:23:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:28,833 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:23:28,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:23:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:28,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:23:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:28,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:23:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:28,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:23:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:28,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:23:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:28,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 19:23:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:28,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:23:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:28,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:28,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:28,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:28,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:28,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:23:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:28,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:23:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:28,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:28,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 19:23:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:23:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:23:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:23:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 19:23:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 19:23:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:23:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-18 19:23:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 19:23:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,252 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-18 19:23:29,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846164702] [2020-08-18 19:23:29,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:23:29,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 19:23:29,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037798898] [2020-08-18 19:23:29,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 19:23:29,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:23:29,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 19:23:29,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-18 19:23:29,255 INFO L87 Difference]: Start difference. First operand 511 states and 603 transitions. Second operand 13 states. [2020-08-18 19:23:30,449 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:23:30,714 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:23:32,239 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 19:23:32,493 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:23:32,734 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:23:33,185 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-18 19:23:34,896 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-18 19:23:35,178 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 19:23:35,489 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:23:35,748 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191