/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:14:23,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:14:23,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:14:23,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:14:23,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:14:23,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:14:23,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:14:23,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:14:23,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:14:23,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:14:23,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:14:23,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:14:23,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:14:23,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:14:23,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:14:23,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:14:23,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:14:23,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:14:23,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:14:23,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:14:23,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:14:23,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:14:23,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:14:23,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:14:23,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:14:23,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:14:23,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:14:23,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:14:23,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:14:23,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:14:23,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:14:23,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:14:23,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:14:23,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:14:23,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:14:23,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:14:23,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:14:23,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:14:23,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:14:23,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:14:23,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:14:23,860 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 13:14:23,902 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:14:23,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:14:23,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:14:23,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:14:23,904 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:14:23,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:14:23,905 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:14:23,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:14:23,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:14:23,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:14:23,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:14:23,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:14:23,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:14:23,907 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:14:23,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:14:23,908 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:14:23,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:14:23,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:14:23,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:14:23,909 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:14:23,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:14:23,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:14:23,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:14:23,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:14:23,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:14:23,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:14:23,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:14:23,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:14:23,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:14:23,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-21 13:14:24,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:14:24,222 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:14:24,225 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:14:24,228 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:14:24,228 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:14:24,229 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c [2020-08-21 13:14:24,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d7fd8ee8/7bc3bd7b997d4f6ab961995642b9b627/FLAG17df92c0f [2020-08-21 13:14:24,806 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:14:24,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c [2020-08-21 13:14:24,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d7fd8ee8/7bc3bd7b997d4f6ab961995642b9b627/FLAG17df92c0f [2020-08-21 13:14:25,117 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d7fd8ee8/7bc3bd7b997d4f6ab961995642b9b627 [2020-08-21 13:14:25,125 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:14:25,126 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:14:25,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:14:25,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:14:25,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:14:25,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:14:25" (1/1) ... [2020-08-21 13:14:25,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43518757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:14:25, skipping insertion in model container [2020-08-21 13:14:25,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:14:25" (1/1) ... [2020-08-21 13:14:25,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:14:25,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:14:25,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:14:25,655 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:14:25,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:14:25,763 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:14:25,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:14:25 WrapperNode [2020-08-21 13:14:25,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:14:25,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:14:25,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:14:25,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:14:25,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:14:25" (1/1) ... [2020-08-21 13:14:25,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:14:25" (1/1) ... [2020-08-21 13:14:25,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:14:25" (1/1) ... [2020-08-21 13:14:25,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:14:25" (1/1) ... [2020-08-21 13:14:25,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:14:25" (1/1) ... [2020-08-21 13:14:25,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:14:25" (1/1) ... [2020-08-21 13:14:25,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:14:25" (1/1) ... [2020-08-21 13:14:25,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:14:25,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:14:25,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:14:25,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:14:25,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:14:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:14:25,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:14:25,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:14:25,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 13:14:25,925 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 13:14:25,925 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 13:14:25,925 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:14:25,926 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 13:14:25,926 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 13:14:25,926 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 13:14:25,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 13:14:25,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 13:14:25,926 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 13:14:25,927 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 13:14:25,927 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 13:14:25,927 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 13:14:25,927 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 13:14:25,927 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 13:14:25,927 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 13:14:25,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 13:14:25,928 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 13:14:25,928 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 13:14:25,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 13:14:25,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 13:14:25,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 13:14:25,928 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 13:14:25,929 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 13:14:25,929 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 13:14:25,929 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 13:14:25,929 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:14:25,929 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 13:14:25,929 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 13:14:25,930 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 13:14:25,930 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 13:14:25,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 13:14:25,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 13:14:25,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 13:14:25,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 13:14:25,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 13:14:25,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 13:14:25,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 13:14:25,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 13:14:25,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 13:14:25,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:14:25,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:14:25,932 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 13:14:25,932 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 13:14:25,932 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 13:14:25,932 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 13:14:25,932 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 13:14:25,932 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 13:14:25,932 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 13:14:25,933 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 13:14:25,933 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 13:14:25,933 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 13:14:25,933 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 13:14:25,933 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 13:14:25,933 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 13:14:25,934 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 13:14:25,934 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 13:14:25,934 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 13:14:25,934 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:14:25,934 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 13:14:25,934 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 13:14:25,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:14:25,935 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 13:14:25,935 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 13:14:25,935 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 13:14:25,935 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 13:14:25,935 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 13:14:25,935 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 13:14:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 13:14:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 13:14:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 13:14:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 13:14:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 13:14:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 13:14:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 13:14:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:14:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 13:14:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 13:14:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:14:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:14:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 13:14:25,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:14:25,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:14:25,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:14:25,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:14:25,938 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 13:14:25,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:14:25,938 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 13:14:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 13:14:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:14:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 13:14:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 13:14:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 13:14:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:14:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 13:14:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:14:27,000 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:14:27,000 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 13:14:27,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:14:27 BoogieIcfgContainer [2020-08-21 13:14:27,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:14:27,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:14:27,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:14:27,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:14:27,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:14:25" (1/3) ... [2020-08-21 13:14:27,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76cc1ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:14:27, skipping insertion in model container [2020-08-21 13:14:27,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:14:25" (2/3) ... [2020-08-21 13:14:27,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76cc1ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:14:27, skipping insertion in model container [2020-08-21 13:14:27,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:14:27" (3/3) ... [2020-08-21 13:14:27,020 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product49.cil.c [2020-08-21 13:14:27,030 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:14:27,040 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:14:27,054 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:14:27,085 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:14:27,086 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:14:27,086 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:14:27,086 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:14:27,087 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:14:27,088 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:14:27,088 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:14:27,088 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:14:27,115 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-08-21 13:14:27,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 13:14:27,131 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:27,132 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:14:27,133 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:27,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:27,139 INFO L82 PathProgramCache]: Analyzing trace with hash 464701397, now seen corresponding path program 1 times [2020-08-21 13:14:27,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:27,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659632443] [2020-08-21 13:14:27,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,849 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:27,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:27,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:14:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:14:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:27,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 13:14:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:28,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:14:28,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659632443] [2020-08-21 13:14:28,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:14:28,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:14:28,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269905119] [2020-08-21 13:14:28,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:14:28,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:28,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:14:28,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:14:28,032 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 4 states. [2020-08-21 13:14:29,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:14:29,016 INFO L93 Difference]: Finished difference Result 303 states and 389 transitions. [2020-08-21 13:14:29,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 13:14:29,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 13:14:29,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:14:29,033 INFO L225 Difference]: With dead ends: 303 [2020-08-21 13:14:29,033 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 13:14:29,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:14:29,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 13:14:29,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-21 13:14:29,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-21 13:14:29,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-08-21 13:14:29,186 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 59 [2020-08-21 13:14:29,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:14:29,186 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-08-21 13:14:29,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:14:29,187 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-08-21 13:14:29,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 13:14:29,198 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:29,198 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:14:29,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:14:29,199 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:29,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:29,199 INFO L82 PathProgramCache]: Analyzing trace with hash -103265726, now seen corresponding path program 1 times [2020-08-21 13:14:29,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:29,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430468523] [2020-08-21 13:14:29,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:29,579 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:29,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:29,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:29,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:29,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:29,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:29,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:29,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:14:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:29,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:29,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 13:14:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:29,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 13:14:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:29,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:14:29,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430468523] [2020-08-21 13:14:29,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:14:29,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 13:14:29,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292725434] [2020-08-21 13:14:29,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 13:14:29,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:29,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 13:14:29,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:14:29,638 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 5 states. [2020-08-21 13:14:30,113 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:30,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:14:30,816 INFO L93 Difference]: Finished difference Result 248 states and 301 transitions. [2020-08-21 13:14:30,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 13:14:30,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 13:14:30,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:14:30,821 INFO L225 Difference]: With dead ends: 248 [2020-08-21 13:14:30,821 INFO L226 Difference]: Without dead ends: 156 [2020-08-21 13:14:30,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:14:30,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-21 13:14:30,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 129. [2020-08-21 13:14:30,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-21 13:14:30,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2020-08-21 13:14:30,884 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 60 [2020-08-21 13:14:30,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:14:30,885 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2020-08-21 13:14:30,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 13:14:30,885 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2020-08-21 13:14:30,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 13:14:30,888 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:30,889 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:14:30,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:14:30,889 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:30,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:30,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1838047012, now seen corresponding path program 1 times [2020-08-21 13:14:30,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:30,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699583020] [2020-08-21 13:14:30,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:31,237 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:31,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:31,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:31,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:31,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:31,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:31,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:31,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:14:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:31,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:31,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 13:14:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:31,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 13:14:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:31,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:14:31,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699583020] [2020-08-21 13:14:31,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:14:31,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:14:31,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255995854] [2020-08-21 13:14:31,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:14:31,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:31,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:14:31,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:14:31,354 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 9 states. [2020-08-21 13:14:31,733 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:32,050 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:32,284 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:32,512 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:33,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:14:33,581 INFO L93 Difference]: Finished difference Result 257 states and 316 transitions. [2020-08-21 13:14:33,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 13:14:33,582 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-21 13:14:33,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:14:33,585 INFO L225 Difference]: With dead ends: 257 [2020-08-21 13:14:33,585 INFO L226 Difference]: Without dead ends: 156 [2020-08-21 13:14:33,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:14:33,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-21 13:14:33,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 129. [2020-08-21 13:14:33,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-21 13:14:33,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2020-08-21 13:14:33,665 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 64 [2020-08-21 13:14:33,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:14:33,665 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2020-08-21 13:14:33,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:14:33,665 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2020-08-21 13:14:33,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-21 13:14:33,667 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:33,667 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:14:33,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:14:33,667 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:33,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:33,668 INFO L82 PathProgramCache]: Analyzing trace with hash -745886990, now seen corresponding path program 1 times [2020-08-21 13:14:33,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:33,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777543189] [2020-08-21 13:14:33,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,926 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:33,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:14:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:33,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:34,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 13:14:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:34,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:34,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:34,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 13:14:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:34,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 13:14:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:34,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:14:34,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777543189] [2020-08-21 13:14:34,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:14:34,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 13:14:34,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013156511] [2020-08-21 13:14:34,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 13:14:34,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:34,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 13:14:34,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:14:34,042 INFO L87 Difference]: Start difference. First operand 129 states and 149 transitions. Second operand 7 states. [2020-08-21 13:14:34,408 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:35,640 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:36,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:14:36,162 INFO L93 Difference]: Finished difference Result 356 states and 444 transitions. [2020-08-21 13:14:36,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 13:14:36,163 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-21 13:14:36,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:14:36,166 INFO L225 Difference]: With dead ends: 356 [2020-08-21 13:14:36,167 INFO L226 Difference]: Without dead ends: 255 [2020-08-21 13:14:36,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 13:14:36,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-08-21 13:14:36,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 212. [2020-08-21 13:14:36,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-08-21 13:14:36,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 244 transitions. [2020-08-21 13:14:36,209 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 244 transitions. Word has length 77 [2020-08-21 13:14:36,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:14:36,210 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 244 transitions. [2020-08-21 13:14:36,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 13:14:36,210 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 244 transitions. [2020-08-21 13:14:36,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-21 13:14:36,211 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:36,211 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:14:36,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:14:36,212 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:36,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:36,212 INFO L82 PathProgramCache]: Analyzing trace with hash -47194942, now seen corresponding path program 1 times [2020-08-21 13:14:36,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:36,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338192691] [2020-08-21 13:14:36,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:36,497 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:36,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:36,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:36,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:36,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:36,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:36,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:36,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:14:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:36,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:36,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 13:14:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:36,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:36,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:36,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:36,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:14:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:36,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 13:14:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:36,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 13:14:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:36,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 13:14:36,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338192691] [2020-08-21 13:14:36,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:14:36,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:14:36,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693292756] [2020-08-21 13:14:36,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:14:36,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:36,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:14:36,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:14:36,690 INFO L87 Difference]: Start difference. First operand 212 states and 244 transitions. Second operand 9 states. [2020-08-21 13:14:37,164 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:37,763 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:38,403 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:38,738 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:39,111 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:39,337 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:39,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:14:39,871 INFO L93 Difference]: Finished difference Result 438 states and 534 transitions. [2020-08-21 13:14:39,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 13:14:39,871 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-08-21 13:14:39,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:14:39,874 INFO L225 Difference]: With dead ends: 438 [2020-08-21 13:14:39,875 INFO L226 Difference]: Without dead ends: 254 [2020-08-21 13:14:39,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 13:14:39,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-21 13:14:39,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 211. [2020-08-21 13:14:39,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-08-21 13:14:39,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 241 transitions. [2020-08-21 13:14:39,921 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 241 transitions. Word has length 91 [2020-08-21 13:14:39,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:14:39,922 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 241 transitions. [2020-08-21 13:14:39,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:14:39,922 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 241 transitions. [2020-08-21 13:14:39,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 13:14:39,923 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:39,923 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:14:39,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:14:39,924 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:39,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:39,924 INFO L82 PathProgramCache]: Analyzing trace with hash -238329201, now seen corresponding path program 1 times [2020-08-21 13:14:39,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:39,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375564757] [2020-08-21 13:14:39,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,152 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:40,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:14:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 13:14:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:14:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 13:14:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 13:14:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:40,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:14:40,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375564757] [2020-08-21 13:14:40,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:14:40,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:14:40,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636270130] [2020-08-21 13:14:40,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:14:40,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:40,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:14:40,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:14:40,275 INFO L87 Difference]: Start difference. First operand 211 states and 241 transitions. Second operand 9 states. [2020-08-21 13:14:41,152 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:41,415 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 13:14:41,654 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:41,882 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:42,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:14:42,500 INFO L93 Difference]: Finished difference Result 436 states and 528 transitions. [2020-08-21 13:14:42,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 13:14:42,500 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-21 13:14:42,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:14:42,503 INFO L225 Difference]: With dead ends: 436 [2020-08-21 13:14:42,503 INFO L226 Difference]: Without dead ends: 253 [2020-08-21 13:14:42,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:14:42,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-08-21 13:14:42,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 216. [2020-08-21 13:14:42,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-21 13:14:42,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 246 transitions. [2020-08-21 13:14:42,541 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 246 transitions. Word has length 92 [2020-08-21 13:14:42,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:14:42,542 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 246 transitions. [2020-08-21 13:14:42,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:14:42,542 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 246 transitions. [2020-08-21 13:14:42,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 13:14:42,543 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:42,543 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:14:42,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:14:42,544 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:42,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:42,544 INFO L82 PathProgramCache]: Analyzing trace with hash 463270673, now seen corresponding path program 1 times [2020-08-21 13:14:42,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:42,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690780443] [2020-08-21 13:14:42,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:42,863 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:42,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:42,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:42,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:42,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:42,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:42,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:42,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:14:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:42,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:42,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 13:14:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:42,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:42,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:42,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:42,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:14:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:42,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 13:14:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:42,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 13:14:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:42,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:14:42,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690780443] [2020-08-21 13:14:42,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:14:42,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 13:14:42,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684129918] [2020-08-21 13:14:43,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 13:14:43,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:43,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 13:14:43,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:14:43,005 INFO L87 Difference]: Start difference. First operand 216 states and 246 transitions. Second operand 11 states. [2020-08-21 13:14:43,551 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:43,782 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:44,002 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:44,654 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:44,900 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:45,132 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:45,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:14:45,864 INFO L93 Difference]: Finished difference Result 448 states and 548 transitions. [2020-08-21 13:14:45,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:14:45,870 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-08-21 13:14:45,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:14:45,873 INFO L225 Difference]: With dead ends: 448 [2020-08-21 13:14:45,873 INFO L226 Difference]: Without dead ends: 260 [2020-08-21 13:14:45,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 13:14:45,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-08-21 13:14:45,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 220. [2020-08-21 13:14:45,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-21 13:14:45,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 250 transitions. [2020-08-21 13:14:45,923 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 250 transitions. Word has length 92 [2020-08-21 13:14:45,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:14:45,923 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 250 transitions. [2020-08-21 13:14:45,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 13:14:45,923 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 250 transitions. [2020-08-21 13:14:45,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 13:14:45,924 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:45,924 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:14:45,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 13:14:45,925 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:45,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:45,925 INFO L82 PathProgramCache]: Analyzing trace with hash -2106215726, now seen corresponding path program 1 times [2020-08-21 13:14:45,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:45,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515853296] [2020-08-21 13:14:45,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,188 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:46,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:14:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 13:14:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:14:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 13:14:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 13:14:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:14:46,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515853296] [2020-08-21 13:14:46,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:14:46,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 13:14:46,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24876018] [2020-08-21 13:14:46,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 13:14:46,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:46,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 13:14:46,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:14:46,316 INFO L87 Difference]: Start difference. First operand 220 states and 250 transitions. Second operand 7 states. [2020-08-21 13:14:46,632 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:47,149 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:48,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:14:48,649 INFO L93 Difference]: Finished difference Result 617 states and 772 transitions. [2020-08-21 13:14:48,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 13:14:48,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-08-21 13:14:48,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:14:48,653 INFO L225 Difference]: With dead ends: 617 [2020-08-21 13:14:48,653 INFO L226 Difference]: Without dead ends: 425 [2020-08-21 13:14:48,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 13:14:48,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-08-21 13:14:48,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 387. [2020-08-21 13:14:48,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-08-21 13:14:48,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 454 transitions. [2020-08-21 13:14:48,717 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 454 transitions. Word has length 92 [2020-08-21 13:14:48,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:14:48,717 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 454 transitions. [2020-08-21 13:14:48,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 13:14:48,718 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 454 transitions. [2020-08-21 13:14:48,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-21 13:14:48,719 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:48,719 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:14:48,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 13:14:48,720 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:48,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:48,720 INFO L82 PathProgramCache]: Analyzing trace with hash -302189332, now seen corresponding path program 1 times [2020-08-21 13:14:48,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:48,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607779647] [2020-08-21 13:14:48,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:49,028 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:49,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:49,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:49,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:49,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:49,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:49,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:49,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:14:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:49,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:14:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:49,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:49,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 13:14:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:49,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:49,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:49,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:49,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:14:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:49,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 13:14:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:49,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 13:14:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:49,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:14:49,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607779647] [2020-08-21 13:14:49,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:14:49,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 13:14:49,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879254492] [2020-08-21 13:14:49,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:14:49,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:49,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:14:49,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:14:49,217 INFO L87 Difference]: Start difference. First operand 387 states and 454 transitions. Second operand 12 states. [2020-08-21 13:14:49,683 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:50,283 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:51,205 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:51,527 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:51,763 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:14:52,014 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:52,274 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:53,320 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:53,569 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:54,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:14:54,069 INFO L93 Difference]: Finished difference Result 1065 states and 1331 transitions. [2020-08-21 13:14:54,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 13:14:54,075 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-21 13:14:54,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:14:54,080 INFO L225 Difference]: With dead ends: 1065 [2020-08-21 13:14:54,080 INFO L226 Difference]: Without dead ends: 776 [2020-08-21 13:14:54,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 13:14:54,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2020-08-21 13:14:54,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 666. [2020-08-21 13:14:54,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2020-08-21 13:14:54,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 774 transitions. [2020-08-21 13:14:54,194 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 774 transitions. Word has length 96 [2020-08-21 13:14:54,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:14:54,194 INFO L479 AbstractCegarLoop]: Abstraction has 666 states and 774 transitions. [2020-08-21 13:14:54,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:14:54,195 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 774 transitions. [2020-08-21 13:14:54,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-21 13:14:54,196 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:54,197 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:14:54,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 13:14:54,197 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:54,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:54,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1029431621, now seen corresponding path program 1 times [2020-08-21 13:14:54,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:54,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706411622] [2020-08-21 13:14:54,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,525 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:54,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:14:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:14:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:14:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:14:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:14:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 13:14:54,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 13:14:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 13:14:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 13:14:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 13:14:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-21 13:14:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:54,849 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 13:14:54,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706411622] [2020-08-21 13:14:54,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:14:54,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 13:14:54,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890787366] [2020-08-21 13:14:54,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 13:14:54,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:54,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 13:14:54,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 13:14:54,851 INFO L87 Difference]: Start difference. First operand 666 states and 774 transitions. Second operand 16 states. [2020-08-21 13:14:55,407 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:14:55,723 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 13:14:55,979 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 13:14:56,220 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 13:14:56,819 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:57,093 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:57,811 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:58,134 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 13:14:58,946 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:59,200 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 13:14:59,476 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:59,762 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:15:00,363 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:15:00,757 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:15:01,110 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 13:15:01,758 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:15:02,030 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 13:15:02,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:15:02,695 INFO L93 Difference]: Finished difference Result 1445 states and 1735 transitions. [2020-08-21 13:15:02,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-21 13:15:02,710 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-08-21 13:15:02,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:15:02,717 INFO L225 Difference]: With dead ends: 1445 [2020-08-21 13:15:02,717 INFO L226 Difference]: Without dead ends: 873 [2020-08-21 13:15:02,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-21 13:15:02,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2020-08-21 13:15:02,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 794. [2020-08-21 13:15:02,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-21 13:15:02,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 932 transitions. [2020-08-21 13:15:02,885 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 932 transitions. Word has length 157 [2020-08-21 13:15:02,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:15:02,886 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 932 transitions. [2020-08-21 13:15:02,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 13:15:02,886 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 932 transitions. [2020-08-21 13:15:02,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-08-21 13:15:02,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:15:02,892 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-21 13:15:02,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 13:15:02,893 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:15:02,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:15:02,893 INFO L82 PathProgramCache]: Analyzing trace with hash 321853011, now seen corresponding path program 1 times [2020-08-21 13:15:02,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:15:02,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855253945] [2020-08-21 13:15:02,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:15:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,209 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:15:03,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:15:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:15:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:15:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:15:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:15:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:15:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:15:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:15:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:15:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:15:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 13:15:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:15:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 13:15:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 13:15:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:15:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-21 13:15:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:15:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 13:15:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 13:15:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:15:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-21 13:15:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-21 13:15:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:15:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-21 13:15:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-21 13:15:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:03,809 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-08-21 13:15:03,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855253945] [2020-08-21 13:15:03,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:15:03,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 13:15:03,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888951777] [2020-08-21 13:15:03,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 13:15:03,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:15:03,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 13:15:03,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 13:15:03,812 INFO L87 Difference]: Start difference. First operand 794 states and 932 transitions. Second operand 15 states. [2020-08-21 13:15:05,666 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:15:05,955 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:15:06,197 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:15:06,435 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:15:07,751 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:15:08,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:15:08,417 INFO L93 Difference]: Finished difference Result 2078 states and 2545 transitions. [2020-08-21 13:15:08,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 13:15:08,418 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2020-08-21 13:15:08,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:15:08,426 INFO L225 Difference]: With dead ends: 2078 [2020-08-21 13:15:08,426 INFO L226 Difference]: Without dead ends: 1225 [2020-08-21 13:15:08,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-21 13:15:08,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2020-08-21 13:15:08,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1039. [2020-08-21 13:15:08,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-08-21 13:15:08,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1251 transitions. [2020-08-21 13:15:08,604 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1251 transitions. Word has length 273 [2020-08-21 13:15:08,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:15:08,604 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1251 transitions. [2020-08-21 13:15:08,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 13:15:08,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1251 transitions. [2020-08-21 13:15:08,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-08-21 13:15:08,610 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:15:08,611 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-21 13:15:08,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 13:15:08,611 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:15:08,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:15:08,611 INFO L82 PathProgramCache]: Analyzing trace with hash -955707756, now seen corresponding path program 1 times [2020-08-21 13:15:08,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:15:08,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437474201] [2020-08-21 13:15:08,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:15:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,903 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:15:08,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:15:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:15:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:15:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:15:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:15:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:15:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:15:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:15:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:15:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:15:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 13:15:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:15:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 13:15:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 13:15:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:15:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 13:15:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-21 13:15:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:15:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 13:15:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 13:15:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:15:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-08-21 13:15:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-21 13:15:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-21 13:15:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:15:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-21 13:15:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 13:15:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 86 proven. 36 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2020-08-21 13:15:09,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437474201] [2020-08-21 13:15:09,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:15:09,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 13:15:09,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536074587] [2020-08-21 13:15:09,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 13:15:09,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:15:09,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 13:15:09,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 13:15:09,340 INFO L87 Difference]: Start difference. First operand 1039 states and 1251 transitions. Second operand 16 states. [2020-08-21 13:15:09,951 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:15:10,261 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:15:10,519 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:15:10,752 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:15:11,358 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:15:12,065 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:15:12,418 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:15:12,670 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:15:13,230 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:15:13,964 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:15:14,202 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:15:14,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:15:14,656 INFO L93 Difference]: Finished difference Result 1968 states and 2405 transitions. [2020-08-21 13:15:14,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 13:15:14,657 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 283 [2020-08-21 13:15:14,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:15:14,667 INFO L225 Difference]: With dead ends: 1968 [2020-08-21 13:15:14,667 INFO L226 Difference]: Without dead ends: 1042 [2020-08-21 13:15:14,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-21 13:15:14,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-08-21 13:15:14,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 999. [2020-08-21 13:15:14,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-08-21 13:15:14,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1185 transitions. [2020-08-21 13:15:14,841 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1185 transitions. Word has length 283 [2020-08-21 13:15:14,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:15:14,842 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1185 transitions. [2020-08-21 13:15:14,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 13:15:14,842 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1185 transitions. [2020-08-21 13:15:14,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-08-21 13:15:14,848 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:15:14,848 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-21 13:15:14,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 13:15:14,848 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:15:14,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:15:14,849 INFO L82 PathProgramCache]: Analyzing trace with hash 746778921, now seen corresponding path program 1 times [2020-08-21 13:15:14,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:15:14,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571175305] [2020-08-21 13:15:14,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:15:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,188 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:15:15,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:15:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:15:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:15:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:15:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:15:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:15:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:15:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:15:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:15:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:15:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 13:15:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:15:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 13:15:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 13:15:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:15:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 13:15:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-21 13:15:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:15:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 13:15:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 13:15:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:15:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-08-21 13:15:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 13:15:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 13:15:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:15:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-21 13:15:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-08-21 13:15:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:15,448 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-08-21 13:15:15,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571175305] [2020-08-21 13:15:15,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:15:15,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 13:15:15,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145916099] [2020-08-21 13:15:15,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 13:15:15,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:15:15,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 13:15:15,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:15:15,452 INFO L87 Difference]: Start difference. First operand 999 states and 1185 transitions. Second operand 11 states. [2020-08-21 13:15:17,204 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:15:17,445 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 13:15:17,681 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:15:17,914 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:15:18,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:15:18,392 INFO L93 Difference]: Finished difference Result 1920 states and 2314 transitions. [2020-08-21 13:15:18,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 13:15:18,393 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 284 [2020-08-21 13:15:18,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:15:18,401 INFO L225 Difference]: With dead ends: 1920 [2020-08-21 13:15:18,401 INFO L226 Difference]: Without dead ends: 1034 [2020-08-21 13:15:18,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 13:15:18,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-08-21 13:15:18,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1009. [2020-08-21 13:15:18,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-08-21 13:15:18,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1195 transitions. [2020-08-21 13:15:18,689 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1195 transitions. Word has length 284 [2020-08-21 13:15:18,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:15:18,694 INFO L479 AbstractCegarLoop]: Abstraction has 1009 states and 1195 transitions. [2020-08-21 13:15:18,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 13:15:18,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1195 transitions. [2020-08-21 13:15:18,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-08-21 13:15:18,705 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:15:18,706 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-21 13:15:18,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 13:15:18,706 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:15:18,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:15:18,707 INFO L82 PathProgramCache]: Analyzing trace with hash -427824693, now seen corresponding path program 1 times [2020-08-21 13:15:18,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:15:18,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17055652] [2020-08-21 13:15:18,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:15:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,032 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:15:19,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:15:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:15:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:15:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:15:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:15:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:15:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:15:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:15:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:15:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:15:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 13:15:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:15:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 13:15:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 13:15:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:15:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 13:15:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-21 13:15:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:15:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 13:15:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 13:15:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:15:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-21 13:15:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-21 13:15:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:15:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-21 13:15:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-08-21 13:15:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,587 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 86 proven. 45 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-08-21 13:15:19,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17055652] [2020-08-21 13:15:19,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:15:19,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 13:15:19,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242736609] [2020-08-21 13:15:19,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 13:15:19,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:15:19,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 13:15:19,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-08-21 13:15:19,593 INFO L87 Difference]: Start difference. First operand 1009 states and 1195 transitions. Second operand 15 states. [2020-08-21 13:15:20,197 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:15:21,278 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:15:21,941 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:15:22,452 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 191 [2020-08-21 13:15:22,917 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 191 [2020-08-21 13:15:23,164 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:15:23,670 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193