/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:15:53,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:15:53,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:15:53,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:15:53,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:15:53,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:15:53,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:15:53,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:15:53,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:15:53,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:15:53,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:15:53,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:15:53,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:15:53,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:15:53,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:15:53,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:15:53,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:15:53,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:15:53,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:15:53,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:15:53,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:15:53,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:15:53,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:15:53,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:15:53,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:15:53,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:15:53,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:15:53,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:15:53,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:15:53,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:15:53,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:15:53,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:15:53,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:15:53,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:15:53,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:15:53,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:15:53,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:15:53,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:15:53,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:15:53,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:15:53,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:15:53,998 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 17:15:54,037 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:15:54,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:15:54,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:15:54,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:15:54,040 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:15:54,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:15:54,040 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:15:54,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:15:54,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:15:54,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:15:54,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:15:54,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:15:54,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:15:54,043 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:15:54,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:15:54,043 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:15:54,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:15:54,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:15:54,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:15:54,044 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:15:54,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:15:54,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:15:54,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:15:54,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:15:54,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:15:54,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:15:54,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:15:54,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:15:54,046 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:15:54,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:15:54,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:15:54,336 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:15:54,342 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:15:54,343 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:15:54,344 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:15:54,344 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c [2020-08-21 17:15:54,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd5618f02/b17dc67712ec47ba917a4bdcc6d21de0/FLAGa1e10c67e [2020-08-21 17:15:54,951 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:15:54,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c [2020-08-21 17:15:54,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd5618f02/b17dc67712ec47ba917a4bdcc6d21de0/FLAGa1e10c67e [2020-08-21 17:15:55,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd5618f02/b17dc67712ec47ba917a4bdcc6d21de0 [2020-08-21 17:15:55,228 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:15:55,229 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:15:55,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:15:55,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:15:55,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:15:55,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:15:55" (1/1) ... [2020-08-21 17:15:55,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cafb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:15:55, skipping insertion in model container [2020-08-21 17:15:55,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:15:55" (1/1) ... [2020-08-21 17:15:55,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:15:55,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:15:55,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:15:55,635 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:15:55,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:15:55,927 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:15:55,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:15:55 WrapperNode [2020-08-21 17:15:55,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:15:55,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:15:55,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:15:55,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:15:55,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:15:55" (1/1) ... [2020-08-21 17:15:55,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:15:55" (1/1) ... [2020-08-21 17:15:55,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:15:55" (1/1) ... [2020-08-21 17:15:55,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:15:55" (1/1) ... [2020-08-21 17:15:56,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:15:55" (1/1) ... [2020-08-21 17:15:56,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:15:55" (1/1) ... [2020-08-21 17:15:56,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:15:55" (1/1) ... [2020-08-21 17:15:56,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:15:56,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:15:56,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:15:56,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:15:56,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:15:55" (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 17:15:56,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:15:56,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:15:56,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 17:15:56,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 17:15:56,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 17:15:56,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 17:15:56,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 17:15:56,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 17:15:56,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 17:15:56,128 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 17:15:56,128 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 17:15:56,128 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 17:15:56,129 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 17:15:56,129 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 17:15:56,129 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 17:15:56,130 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 17:15:56,130 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 17:15:56,130 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 17:15:56,130 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 17:15:56,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 17:15:56,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 17:15:56,131 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 17:15:56,131 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 17:15:56,131 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 17:15:56,132 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 17:15:56,133 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 17:15:56,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 17:15:56,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 17:15:56,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 17:15:56,134 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 17:15:56,134 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 17:15:56,134 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 17:15:56,134 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 17:15:56,134 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:15:56,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 17:15:56,135 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 17:15:56,135 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 17:15:56,135 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 17:15:56,135 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 17:15:56,135 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 17:15:56,135 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 17:15:56,135 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 17:15:56,136 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 17:15:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:15:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:15:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 17:15:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 17:15:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:15:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:15:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 17:15:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:15:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:15:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:15:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:15:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 17:15:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:15:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 17:15:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 17:15:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:15:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 17:15:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 17:15:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:15:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 17:15:56,140 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 17:15:56,140 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 17:15:56,140 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 17:15:56,140 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 17:15:56,140 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 17:15:56,140 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 17:15:56,140 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 17:15:56,141 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 17:15:56,141 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 17:15:56,142 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 17:15:56,142 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 17:15:56,143 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 17:15:56,143 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 17:15:56,144 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 17:15:56,144 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 17:15:56,144 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 17:15:56,144 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 17:15:56,144 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 17:15:56,144 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 17:15:56,145 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 17:15:56,146 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 17:15:56,146 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 17:15:56,146 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 17:15:56,146 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 17:15:56,146 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 17:15:56,146 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 17:15:56,146 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 17:15:56,147 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 17:15:56,147 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 17:15:56,147 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 17:15:56,147 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 17:15:56,147 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 17:15:56,147 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 17:15:56,147 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:15:56,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:15:56,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 17:15:56,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:15:57,249 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:15:57,250 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 17:15:57,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:15:57 BoogieIcfgContainer [2020-08-21 17:15:57,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:15:57,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:15:57,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:15:57,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:15:57,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:15:55" (1/3) ... [2020-08-21 17:15:57,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58dbddc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:15:57, skipping insertion in model container [2020-08-21 17:15:57,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:15:55" (2/3) ... [2020-08-21 17:15:57,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58dbddc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:15:57, skipping insertion in model container [2020-08-21 17:15:57,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:15:57" (3/3) ... [2020-08-21 17:15:57,263 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product53.cil.c [2020-08-21 17:15:57,273 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:15:57,280 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:15:57,294 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:15:57,318 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:15:57,318 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:15:57,318 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:15:57,318 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:15:57,319 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:15:57,319 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:15:57,319 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:15:57,319 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:15:57,341 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-08-21 17:15:57,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 17:15:57,352 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:15:57,353 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 17:15:57,353 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:15:57,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:15:57,359 INFO L82 PathProgramCache]: Analyzing trace with hash 2103350570, now seen corresponding path program 1 times [2020-08-21 17:15:57,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:15:57,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880122395] [2020-08-21 17:15:57,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:15:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:15:58,056 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:15:58,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:15:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:15:58,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:15:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:15:58,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:15:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:15:58,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:15:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:15:58,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:15:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:15:58,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:15:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:15:58,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:15:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:15:58,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:15:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:15:58,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:15:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:15:58,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 17:15:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:15:58,169 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 17:15:58,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880122395] [2020-08-21 17:15:58,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:15:58,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:15:58,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148613938] [2020-08-21 17:15:58,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:15:58,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:15:58,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:15:58,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:15:58,198 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 4 states. [2020-08-21 17:15:59,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:15:59,428 INFO L93 Difference]: Finished difference Result 341 states and 436 transitions. [2020-08-21 17:15:59,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 17:15:59,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 17:15:59,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:15:59,446 INFO L225 Difference]: With dead ends: 341 [2020-08-21 17:15:59,447 INFO L226 Difference]: Without dead ends: 186 [2020-08-21 17:15:59,452 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 17:15:59,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-21 17:15:59,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 156. [2020-08-21 17:15:59,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-08-21 17:15:59,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 184 transitions. [2020-08-21 17:15:59,558 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 184 transitions. Word has length 59 [2020-08-21 17:15:59,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:15:59,559 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 184 transitions. [2020-08-21 17:15:59,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:15:59,560 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 184 transitions. [2020-08-21 17:15:59,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 17:15:59,569 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:15:59,569 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 17:15:59,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:15:59,571 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:15:59,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:15:59,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1329026362, now seen corresponding path program 1 times [2020-08-21 17:15:59,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:15:59,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771779845] [2020-08-21 17:15:59,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:15:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:00,045 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:16:00,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:00,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:16:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:00,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:00,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:00,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:16:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:00,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:16:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:00,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:16:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:00,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:00,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 17:16:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:00,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 17:16:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:00,211 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 17:16:00,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771779845] [2020-08-21 17:16:00,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:16:00,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:16:00,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753112632] [2020-08-21 17:16:00,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:16:00,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:16:00,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:16:00,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:16:00,216 INFO L87 Difference]: Start difference. First operand 156 states and 184 transitions. Second operand 9 states. [2020-08-21 17:16:00,584 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:00,939 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:01,193 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:01,465 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:03,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:16:03,017 INFO L93 Difference]: Finished difference Result 314 states and 391 transitions. [2020-08-21 17:16:03,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 17:16:03,020 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-21 17:16:03,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:16:03,023 INFO L225 Difference]: With dead ends: 314 [2020-08-21 17:16:03,024 INFO L226 Difference]: Without dead ends: 186 [2020-08-21 17:16:03,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 17:16:03,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-21 17:16:03,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 156. [2020-08-21 17:16:03,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-08-21 17:16:03,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 183 transitions. [2020-08-21 17:16:03,075 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 183 transitions. Word has length 64 [2020-08-21 17:16:03,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:16:03,076 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 183 transitions. [2020-08-21 17:16:03,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:16:03,076 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 183 transitions. [2020-08-21 17:16:03,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-21 17:16:03,078 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:16:03,079 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] [2020-08-21 17:16:03,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:16:03,079 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:16:03,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:16:03,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1768093168, now seen corresponding path program 1 times [2020-08-21 17:16:03,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:16:03,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531100882] [2020-08-21 17:16:03,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:16:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:03,401 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:16:03,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:03,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:16:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:03,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:03,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:03,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:16:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:03,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:16:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:03,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:16:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:03,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:03,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 17:16:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:03,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:03,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:03,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:03,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-21 17:16:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:03,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 17:16:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:03,562 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 17:16:03,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531100882] [2020-08-21 17:16:03,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:16:03,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 17:16:03,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378589106] [2020-08-21 17:16:03,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 17:16:03,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:16:03,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 17:16:03,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:16:03,565 INFO L87 Difference]: Start difference. First operand 156 states and 183 transitions. Second operand 7 states. [2020-08-21 17:16:03,954 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:05,452 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:06,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:16:06,243 INFO L93 Difference]: Finished difference Result 457 states and 594 transitions. [2020-08-21 17:16:06,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 17:16:06,244 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-08-21 17:16:06,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:16:06,249 INFO L225 Difference]: With dead ends: 457 [2020-08-21 17:16:06,250 INFO L226 Difference]: Without dead ends: 329 [2020-08-21 17:16:06,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 17:16:06,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-08-21 17:16:06,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 268. [2020-08-21 17:16:06,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-21 17:16:06,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 319 transitions. [2020-08-21 17:16:06,313 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 319 transitions. Word has length 82 [2020-08-21 17:16:06,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:16:06,313 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 319 transitions. [2020-08-21 17:16:06,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 17:16:06,314 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 319 transitions. [2020-08-21 17:16:06,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-21 17:16:06,315 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:16:06,316 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 17:16:06,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:16:06,316 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:16:06,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:16:06,317 INFO L82 PathProgramCache]: Analyzing trace with hash -856267590, now seen corresponding path program 1 times [2020-08-21 17:16:06,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:16:06,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625953033] [2020-08-21 17:16:06,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:16:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:06,606 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:16:06,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:06,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:16:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:06,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:06,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:06,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:16:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:06,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:16:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:06,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:16:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:06,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:06,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 17:16:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:06,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:06,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:06,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:06,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:06,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:16:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:06,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 17:16:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:06,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 17:16:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:06,776 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 17:16:06,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625953033] [2020-08-21 17:16:06,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:16:06,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:16:06,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385727337] [2020-08-21 17:16:06,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:16:06,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:16:06,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:16:06,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:16:06,781 INFO L87 Difference]: Start difference. First operand 268 states and 319 transitions. Second operand 9 states. [2020-08-21 17:16:07,124 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:07,728 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:08,476 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:08,817 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:09,229 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:09,466 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:10,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:16:10,218 INFO L93 Difference]: Finished difference Result 558 states and 704 transitions. [2020-08-21 17:16:10,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 17:16:10,220 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-08-21 17:16:10,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:16:10,224 INFO L225 Difference]: With dead ends: 558 [2020-08-21 17:16:10,224 INFO L226 Difference]: Without dead ends: 318 [2020-08-21 17:16:10,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 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 17:16:10,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-08-21 17:16:10,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 267. [2020-08-21 17:16:10,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-08-21 17:16:10,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 316 transitions. [2020-08-21 17:16:10,277 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 316 transitions. Word has length 96 [2020-08-21 17:16:10,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:16:10,278 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 316 transitions. [2020-08-21 17:16:10,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:16:10,278 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 316 transitions. [2020-08-21 17:16:10,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 17:16:10,279 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:16:10,280 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] [2020-08-21 17:16:10,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:16:10,280 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:16:10,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:16:10,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1863541240, now seen corresponding path program 1 times [2020-08-21 17:16:10,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:16:10,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983180392] [2020-08-21 17:16:10,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:16:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:10,530 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:16:10,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:10,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:16:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:10,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:10,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:10,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:16:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:10,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:16:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:10,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 17:16:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:10,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:10,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:16:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:10,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:10,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:10,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:10,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:10,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:16:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:10,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 17:16:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:10,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 17:16:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:10,736 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 17:16:10,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983180392] [2020-08-21 17:16:10,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:16:10,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:16:10,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462752074] [2020-08-21 17:16:10,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:16:10,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:16:10,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:16:10,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:16:10,739 INFO L87 Difference]: Start difference. First operand 267 states and 316 transitions. Second operand 10 states. [2020-08-21 17:16:11,322 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:11,987 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:12,236 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 17:16:12,478 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:12,711 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:13,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:16:13,646 INFO L93 Difference]: Finished difference Result 518 states and 636 transitions. [2020-08-21 17:16:13,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 17:16:13,647 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-21 17:16:13,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:16:13,650 INFO L225 Difference]: With dead ends: 518 [2020-08-21 17:16:13,650 INFO L226 Difference]: Without dead ends: 279 [2020-08-21 17:16:13,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-08-21 17:16:13,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-08-21 17:16:13,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 242. [2020-08-21 17:16:13,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-21 17:16:13,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 274 transitions. [2020-08-21 17:16:13,698 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 274 transitions. Word has length 93 [2020-08-21 17:16:13,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:16:13,698 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 274 transitions. [2020-08-21 17:16:13,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:16:13,698 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 274 transitions. [2020-08-21 17:16:13,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 17:16:13,700 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:16:13,700 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:16:13,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:16:13,700 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:16:13,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:16:13,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1010732805, now seen corresponding path program 1 times [2020-08-21 17:16:13,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:16:13,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239677828] [2020-08-21 17:16:13,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:16:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:13,984 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:16:13,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:14,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:16:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:14,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:14,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:14,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:16:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:14,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:16:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:14,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:16:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:14,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:14,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 17:16:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:14,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:14,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:14,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:14,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:14,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:16:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:14,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 17:16:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:14,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 17:16:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:14,159 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 17:16:14,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239677828] [2020-08-21 17:16:14,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:16:14,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 17:16:14,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421092207] [2020-08-21 17:16:14,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 17:16:14,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:16:14,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 17:16:14,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 17:16:14,161 INFO L87 Difference]: Start difference. First operand 242 states and 274 transitions. Second operand 11 states. [2020-08-21 17:16:14,633 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:14,885 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:15,111 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:15,769 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:16,019 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:16,253 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:17,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:16:17,251 INFO L93 Difference]: Finished difference Result 500 states and 606 transitions. [2020-08-21 17:16:17,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 17:16:17,251 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 97 [2020-08-21 17:16:17,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:16:17,254 INFO L225 Difference]: With dead ends: 500 [2020-08-21 17:16:17,254 INFO L226 Difference]: Without dead ends: 286 [2020-08-21 17:16:17,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 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 17:16:17,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-08-21 17:16:17,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 246. [2020-08-21 17:16:17,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-08-21 17:16:17,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 278 transitions. [2020-08-21 17:16:17,292 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 278 transitions. Word has length 97 [2020-08-21 17:16:17,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:16:17,292 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 278 transitions. [2020-08-21 17:16:17,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 17:16:17,292 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 278 transitions. [2020-08-21 17:16:17,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 17:16:17,293 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:16:17,294 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:16:17,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 17:16:17,294 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:16:17,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:16:17,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1340498566, now seen corresponding path program 1 times [2020-08-21 17:16:17,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:16:17,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144373639] [2020-08-21 17:16:17,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:16:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:17,573 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:16:17,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:17,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:16:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:17,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:17,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:17,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:16:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:17,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:16:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:17,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:16:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:17,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:17,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 17:16:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:17,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:17,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:17,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:17,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:17,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:16:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:17,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 17:16:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:17,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 17:16:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:17,734 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 17:16:17,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144373639] [2020-08-21 17:16:17,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:16:17,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 17:16:17,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849453486] [2020-08-21 17:16:17,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 17:16:17,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:16:17,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 17:16:17,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:16:17,742 INFO L87 Difference]: Start difference. First operand 246 states and 278 transitions. Second operand 7 states. [2020-08-21 17:16:18,155 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:18,710 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:20,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:16:20,625 INFO L93 Difference]: Finished difference Result 679 states and 843 transitions. [2020-08-21 17:16:20,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 17:16:20,626 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-08-21 17:16:20,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:16:20,630 INFO L225 Difference]: With dead ends: 679 [2020-08-21 17:16:20,631 INFO L226 Difference]: Without dead ends: 461 [2020-08-21 17:16:20,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 17:16:20,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2020-08-21 17:16:20,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 423. [2020-08-21 17:16:20,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-08-21 17:16:20,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 494 transitions. [2020-08-21 17:16:20,704 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 494 transitions. Word has length 97 [2020-08-21 17:16:20,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:16:20,704 INFO L479 AbstractCegarLoop]: Abstraction has 423 states and 494 transitions. [2020-08-21 17:16:20,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 17:16:20,705 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 494 transitions. [2020-08-21 17:16:20,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-08-21 17:16:20,706 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:16:20,706 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:16:20,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 17:16:20,707 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:16:20,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:16:20,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1424414732, now seen corresponding path program 1 times [2020-08-21 17:16:20,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:16:20,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355652858] [2020-08-21 17:16:20,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:16:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,020 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:16:21,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:16:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:16:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:16:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:16:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 17:16:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 17:16:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:16:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 17:16:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 17:16:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,173 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 17:16:21,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355652858] [2020-08-21 17:16:21,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:16:21,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 17:16:21,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423635821] [2020-08-21 17:16:21,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 17:16:21,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:16:21,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 17:16:21,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:16:21,176 INFO L87 Difference]: Start difference. First operand 423 states and 494 transitions. Second operand 12 states. [2020-08-21 17:16:21,678 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:22,332 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:23,384 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:23,676 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:23,919 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:16:24,207 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:24,476 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:25,936 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:26,209 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:27,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:16:27,015 INFO L93 Difference]: Finished difference Result 1166 states and 1447 transitions. [2020-08-21 17:16:27,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 17:16:27,018 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 101 [2020-08-21 17:16:27,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:16:27,024 INFO L225 Difference]: With dead ends: 1166 [2020-08-21 17:16:27,024 INFO L226 Difference]: Without dead ends: 846 [2020-08-21 17:16:27,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 17:16:27,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2020-08-21 17:16:27,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 733. [2020-08-21 17:16:27,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-08-21 17:16:27,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 847 transitions. [2020-08-21 17:16:27,165 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 847 transitions. Word has length 101 [2020-08-21 17:16:27,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:16:27,166 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 847 transitions. [2020-08-21 17:16:27,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 17:16:27,167 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 847 transitions. [2020-08-21 17:16:27,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-08-21 17:16:27,172 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:16:27,173 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:16:27,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 17:16:27,173 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:16:27,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:16:27,174 INFO L82 PathProgramCache]: Analyzing trace with hash -578790576, now seen corresponding path program 1 times [2020-08-21 17:16:27,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:16:27,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834584410] [2020-08-21 17:16:27,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:16:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,555 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:16:27,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:16:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:16:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:16:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:16:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 17:16:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:16:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:16:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:16:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 17:16:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 17:16:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 17:16:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 17:16:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:16:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-21 17:16:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-21 17:16:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:27,995 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 17:16:27,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834584410] [2020-08-21 17:16:27,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:16:27,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 17:16:27,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042907696] [2020-08-21 17:16:27,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 17:16:27,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:16:27,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 17:16:27,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 17:16:27,998 INFO L87 Difference]: Start difference. First operand 733 states and 847 transitions. Second operand 16 states. [2020-08-21 17:16:28,655 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 17:16:29,017 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-21 17:16:29,292 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 17:16:29,547 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 17:16:30,153 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:30,429 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 17:16:30,802 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 17:16:31,509 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:31,847 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 17:16:32,690 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:33,227 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-21 17:16:33,521 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:16:34,060 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:34,479 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:16:35,123 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 17:16:35,435 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 17:16:36,134 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-21 17:16:36,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:16:36,683 INFO L93 Difference]: Finished difference Result 1574 states and 1876 transitions. [2020-08-21 17:16:36,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-08-21 17:16:36,684 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 178 [2020-08-21 17:16:36,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:16:36,690 INFO L225 Difference]: With dead ends: 1574 [2020-08-21 17:16:36,690 INFO L226 Difference]: Without dead ends: 940 [2020-08-21 17:16:36,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=600, Invalid=2370, Unknown=0, NotChecked=0, Total=2970 [2020-08-21 17:16:36,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2020-08-21 17:16:36,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 861. [2020-08-21 17:16:36,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-08-21 17:16:36,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1005 transitions. [2020-08-21 17:16:36,842 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1005 transitions. Word has length 178 [2020-08-21 17:16:36,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:16:36,842 INFO L479 AbstractCegarLoop]: Abstraction has 861 states and 1005 transitions. [2020-08-21 17:16:36,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 17:16:36,843 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1005 transitions. [2020-08-21 17:16:36,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-08-21 17:16:36,848 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:16:36,849 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:16:36,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 17:16:36,849 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:16:36,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:16:36,850 INFO L82 PathProgramCache]: Analyzing trace with hash 2132607531, now seen corresponding path program 1 times [2020-08-21 17:16:36,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:16:36,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227533544] [2020-08-21 17:16:36,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:16:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,211 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:16:37,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:16:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:16:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:16:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:16:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 17:16:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:16:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:16:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:16:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 17:16:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 17:16:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 17:16:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:16:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 17:16:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-21 17:16:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 17:16:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 17:16:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:16:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-21 17:16:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-21 17:16:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-21 17:16:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:16:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-21 17:16:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-08-21 17:16:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 77 proven. 31 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-08-21 17:16:37,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227533544] [2020-08-21 17:16:37,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:16:37,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 17:16:37,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309547131] [2020-08-21 17:16:37,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 17:16:37,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:16:37,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 17:16:37,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 17:16:37,767 INFO L87 Difference]: Start difference. First operand 861 states and 1005 transitions. Second operand 15 states. [2020-08-21 17:16:39,014 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:39,688 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:16:40,146 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 17:16:40,590 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 17:16:40,813 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:41,087 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:16:41,329 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:16:41,575 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:43,023 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:44,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:16:44,491 INFO L93 Difference]: Finished difference Result 2247 states and 2712 transitions. [2020-08-21 17:16:44,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 17:16:44,492 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 301 [2020-08-21 17:16:44,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:16:44,501 INFO L225 Difference]: With dead ends: 2247 [2020-08-21 17:16:44,501 INFO L226 Difference]: Without dead ends: 1387 [2020-08-21 17:16:44,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-21 17:16:44,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2020-08-21 17:16:44,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1191. [2020-08-21 17:16:44,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1191 states. [2020-08-21 17:16:44,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1402 transitions. [2020-08-21 17:16:44,720 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1402 transitions. Word has length 301 [2020-08-21 17:16:44,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:16:44,721 INFO L479 AbstractCegarLoop]: Abstraction has 1191 states and 1402 transitions. [2020-08-21 17:16:44,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 17:16:44,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1402 transitions. [2020-08-21 17:16:44,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-08-21 17:16:44,727 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:16:44,729 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:16:44,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 17:16:44,730 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:16:44,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:16:44,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1264198018, now seen corresponding path program 1 times [2020-08-21 17:16:44,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:16:44,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284593103] [2020-08-21 17:16:44,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:16:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,039 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:16:45,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:16:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:16:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:16:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:16:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 17:16:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:16:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:16:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:16:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 17:16:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 17:16:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 17:16:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:16:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 17:16:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 17:16:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-21 17:16:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 17:16:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 17:16:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:16:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-21 17:16:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 17:16:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:16:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-08-21 17:16:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-21 17:16:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:45,445 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 85 proven. 42 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-08-21 17:16:45,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284593103] [2020-08-21 17:16:45,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:16:45,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 17:16:45,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270502183] [2020-08-21 17:16:45,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 17:16:45,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:16:45,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 17:16:45,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 17:16:45,449 INFO L87 Difference]: Start difference. First operand 1191 states and 1402 transitions. Second operand 16 states. [2020-08-21 17:16:45,970 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:46,318 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 17:16:46,591 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:16:46,853 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:16:47,475 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:48,313 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:48,674 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:48,943 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:49,442 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:50,359 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:50,595 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:51,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:16:51,013 INFO L93 Difference]: Finished difference Result 2264 states and 2700 transitions. [2020-08-21 17:16:51,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 17:16:51,016 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 303 [2020-08-21 17:16:51,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:16:51,024 INFO L225 Difference]: With dead ends: 2264 [2020-08-21 17:16:51,024 INFO L226 Difference]: Without dead ends: 1194 [2020-08-21 17:16:51,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-21 17:16:51,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-08-21 17:16:51,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1151. [2020-08-21 17:16:51,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1151 states. [2020-08-21 17:16:51,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1335 transitions. [2020-08-21 17:16:51,276 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1335 transitions. Word has length 303 [2020-08-21 17:16:51,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:16:51,277 INFO L479 AbstractCegarLoop]: Abstraction has 1151 states and 1335 transitions. [2020-08-21 17:16:51,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 17:16:51,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1335 transitions. [2020-08-21 17:16:51,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-08-21 17:16:51,289 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:16:51,289 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, 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, 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] [2020-08-21 17:16:51,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 17:16:51,290 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:16:51,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:16:51,290 INFO L82 PathProgramCache]: Analyzing trace with hash -711568706, now seen corresponding path program 1 times [2020-08-21 17:16:51,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:16:51,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731749775] [2020-08-21 17:16:51,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:16:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,687 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:16:51,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:16:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:16:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:16:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:16:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 17:16:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:16:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:16:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:16:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 17:16:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 17:16:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 17:16:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:16:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 17:16:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 17:16:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-21 17:16:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 17:16:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 17:16:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:16:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 17:16:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-08-21 17:16:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-21 17:16:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:16:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:51,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-21 17:16:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:52,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-21 17:16:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:52,085 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-08-21 17:16:52,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731749775] [2020-08-21 17:16:52,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:16:52,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 17:16:52,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300566349] [2020-08-21 17:16:52,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 17:16:52,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:16:52,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 17:16:52,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-08-21 17:16:52,089 INFO L87 Difference]: Start difference. First operand 1151 states and 1335 transitions. Second operand 14 states.