/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=DEEPEST --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_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 20:29:21,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 20:29:21,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 20:29:21,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 20:29:21,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 20:29:21,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 20:29:21,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 20:29:21,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 20:29:21,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 20:29:21,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 20:29:21,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 20:29:21,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 20:29:21,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 20:29:21,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 20:29:21,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 20:29:21,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 20:29:21,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 20:29:21,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 20:29:21,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 20:29:22,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 20:29:22,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 20:29:22,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 20:29:22,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 20:29:22,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 20:29:22,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 20:29:22,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 20:29:22,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 20:29:22,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 20:29:22,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 20:29:22,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 20:29:22,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 20:29:22,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 20:29:22,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 20:29:22,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 20:29:22,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 20:29:22,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 20:29:22,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 20:29:22,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 20:29:22,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 20:29:22,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 20:29:22,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 20:29:22,044 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 20:29:22,078 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 20:29:22,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 20:29:22,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 20:29:22,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 20:29:22,080 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 20:29:22,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 20:29:22,081 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 20:29:22,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 20:29:22,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 20:29:22,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 20:29:22,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 20:29:22,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 20:29:22,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 20:29:22,084 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 20:29:22,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 20:29:22,084 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 20:29:22,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 20:29:22,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 20:29:22,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 20:29:22,085 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 20:29:22,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 20:29:22,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:29:22,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 20:29:22,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 20:29:22,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 20:29:22,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 20:29:22,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 20:29:22,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 20:29:22,089 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 20:29:22,089 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=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-08-21 20:29:22,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 20:29:22,406 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 20:29:22,410 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 20:29:22,411 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 20:29:22,412 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 20:29:22,412 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product57.cil.c [2020-08-21 20:29:22,490 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35ee2d086/d324b52ce93b4ee68d37664f70cd9d76/FLAGaa85bf748 [2020-08-21 20:29:23,052 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 20:29:23,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product57.cil.c [2020-08-21 20:29:23,066 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35ee2d086/d324b52ce93b4ee68d37664f70cd9d76/FLAGaa85bf748 [2020-08-21 20:29:23,355 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35ee2d086/d324b52ce93b4ee68d37664f70cd9d76 [2020-08-21 20:29:23,364 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 20:29:23,366 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 20:29:23,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 20:29:23,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 20:29:23,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 20:29:23,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:29:23" (1/1) ... [2020-08-21 20:29:23,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b54cc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:29:23, skipping insertion in model container [2020-08-21 20:29:23,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:29:23" (1/1) ... [2020-08-21 20:29:23,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 20:29:23,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 20:29:23,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:29:23,884 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 20:29:23,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:29:24,001 INFO L208 MainTranslator]: Completed translation [2020-08-21 20:29:24,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:29:24 WrapperNode [2020-08-21 20:29:24,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 20:29:24,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 20:29:24,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 20:29:24,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 20:29:24,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:29:24" (1/1) ... [2020-08-21 20:29:24,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:29:24" (1/1) ... [2020-08-21 20:29:24,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:29:24" (1/1) ... [2020-08-21 20:29:24,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:29:24" (1/1) ... [2020-08-21 20:29:24,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:29:24" (1/1) ... [2020-08-21 20:29:24,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:29:24" (1/1) ... [2020-08-21 20:29:24,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:29:24" (1/1) ... [2020-08-21 20:29:24,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 20:29:24,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 20:29:24,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 20:29:24,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 20:29:24,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:29:24" (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 20:29:24,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 20:29:24,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 20:29:24,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 20:29:24,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 20:29:24,201 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 20:29:24,201 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 20:29:24,201 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 20:29:24,201 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 20:29:24,202 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 20:29:24,203 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 20:29:24,203 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 20:29:24,203 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 20:29:24,203 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 20:29:24,203 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 20:29:24,204 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 20:29:24,204 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 20:29:24,205 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 20:29:24,205 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 20:29:24,205 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 20:29:24,205 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 20:29:24,205 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 20:29:24,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 20:29:24,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 20:29:24,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 20:29:24,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 20:29:24,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 20:29:24,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 20:29:24,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 20:29:24,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 20:29:24,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 20:29:24,208 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 20:29:24,208 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 20:29:24,208 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 20:29:24,208 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 20:29:24,208 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 20:29:24,209 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 20:29:24,209 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 20:29:24,209 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 20:29:24,209 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 20:29:24,209 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 20:29:24,209 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 20:29:24,209 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 20:29:24,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 20:29:24,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 20:29:24,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 20:29:24,210 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 20:29:24,210 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 20:29:24,210 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 20:29:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 20:29:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 20:29:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 20:29:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 20:29:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 20:29:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 20:29:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 20:29:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 20:29:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 20:29:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 20:29:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 20:29:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 20:29:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 20:29:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 20:29:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 20:29:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 20:29:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 20:29:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 20:29:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 20:29:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 20:29:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 20:29:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 20:29:24,215 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 20:29:24,215 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 20:29:24,216 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 20:29:24,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 20:29:24,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 20:29:24,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 20:29:24,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 20:29:24,218 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 20:29:24,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 20:29:24,218 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 20:29:24,218 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 20:29:24,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 20:29:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 20:29:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 20:29:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 20:29:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 20:29:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 20:29:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 20:29:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 20:29:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 20:29:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 20:29:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 20:29:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 20:29:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 20:29:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 20:29:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 20:29:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 20:29:24,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 20:29:24,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 20:29:24,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 20:29:25,256 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 20:29:25,257 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 20:29:25,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:29:25 BoogieIcfgContainer [2020-08-21 20:29:25,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 20:29:25,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 20:29:25,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 20:29:25,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 20:29:25,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 08:29:23" (1/3) ... [2020-08-21 20:29:25,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7a1ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:29:25, skipping insertion in model container [2020-08-21 20:29:25,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:29:24" (2/3) ... [2020-08-21 20:29:25,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7a1ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:29:25, skipping insertion in model container [2020-08-21 20:29:25,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:29:25" (3/3) ... [2020-08-21 20:29:25,271 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product57.cil.c [2020-08-21 20:29:25,282 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 20:29:25,289 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 20:29:25,303 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 20:29:25,329 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 20:29:25,330 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 20:29:25,330 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 20:29:25,330 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 20:29:25,330 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 20:29:25,330 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 20:29:25,331 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 20:29:25,331 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 20:29:25,356 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-08-21 20:29:25,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 20:29:25,369 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:29:25,370 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 20:29:25,371 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:29:25,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:29:25,376 INFO L82 PathProgramCache]: Analyzing trace with hash 479094946, now seen corresponding path program 1 times [2020-08-21 20:29:25,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:29:25,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497701742] [2020-08-21 20:29:25,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:29:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:26,082 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:29:26,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:26,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:29:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:26,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:29:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:26,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:26,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:29:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:26,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:29:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:26,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:29:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:26,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:26,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 20:29:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:26,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 20:29:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:26,265 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 20:29:26,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497701742] [2020-08-21 20:29:26,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:29:26,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 20:29:26,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759302514] [2020-08-21 20:29:26,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 20:29:26,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:29:26,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 20:29:26,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 20:29:26,292 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 4 states. [2020-08-21 20:29:27,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:29:27,537 INFO L93 Difference]: Finished difference Result 335 states and 423 transitions. [2020-08-21 20:29:27,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 20:29:27,539 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 20:29:27,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:29:27,564 INFO L225 Difference]: With dead ends: 335 [2020-08-21 20:29:27,564 INFO L226 Difference]: Without dead ends: 183 [2020-08-21 20:29:27,571 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 20:29:27,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-08-21 20:29:27,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 153. [2020-08-21 20:29:27,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-21 20:29:27,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 178 transitions. [2020-08-21 20:29:27,669 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 178 transitions. Word has length 59 [2020-08-21 20:29:27,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:29:27,670 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 178 transitions. [2020-08-21 20:29:27,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 20:29:27,670 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 178 transitions. [2020-08-21 20:29:27,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 20:29:27,674 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:29:27,674 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 20:29:27,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 20:29:27,675 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:29:27,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:29:27,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1126861649, now seen corresponding path program 1 times [2020-08-21 20:29:27,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:29:27,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398009932] [2020-08-21 20:29:27,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:29:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:28,064 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:29:28,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:28,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:29:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:28,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:29:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:28,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:28,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:29:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:28,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:29:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:28,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 20:29:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:28,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:28,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 20:29:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:28,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 20:29:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:28,175 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 20:29:28,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398009932] [2020-08-21 20:29:28,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:29:28,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 20:29:28,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287334864] [2020-08-21 20:29:28,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 20:29:28,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:29:28,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 20:29:28,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 20:29:28,179 INFO L87 Difference]: Start difference. First operand 153 states and 178 transitions. Second operand 9 states. [2020-08-21 20:29:28,581 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:29:28,935 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:29:29,148 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:29:29,405 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:29:30,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:29:30,774 INFO L93 Difference]: Finished difference Result 308 states and 378 transitions. [2020-08-21 20:29:30,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 20:29:30,775 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-21 20:29:30,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:29:30,779 INFO L225 Difference]: With dead ends: 308 [2020-08-21 20:29:30,779 INFO L226 Difference]: Without dead ends: 183 [2020-08-21 20:29:30,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 20:29:30,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-08-21 20:29:30,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 153. [2020-08-21 20:29:30,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-21 20:29:30,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 177 transitions. [2020-08-21 20:29:30,826 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 177 transitions. Word has length 64 [2020-08-21 20:29:30,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:29:30,827 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 177 transitions. [2020-08-21 20:29:30,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 20:29:30,827 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 177 transitions. [2020-08-21 20:29:30,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-21 20:29:30,830 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:29:30,831 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:29:30,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 20:29:30,831 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:29:30,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:29:30,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1745445590, now seen corresponding path program 1 times [2020-08-21 20:29:30,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:29:30,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384084339] [2020-08-21 20:29:30,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:29:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:31,123 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:29:31,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:31,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:29:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:31,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:29:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:31,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:31,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:29:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:31,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:29:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:31,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 20:29:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:31,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:31,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 20:29:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:31,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:31,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:31,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 20:29:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:31,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 20:29:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:31,242 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 20:29:31,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384084339] [2020-08-21 20:29:31,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:29:31,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 20:29:31,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544369686] [2020-08-21 20:29:31,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 20:29:31,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:29:31,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 20:29:31,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 20:29:31,245 INFO L87 Difference]: Start difference. First operand 153 states and 177 transitions. Second operand 7 states. [2020-08-21 20:29:31,667 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:29:33,238 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:29:34,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:29:34,067 INFO L93 Difference]: Finished difference Result 445 states and 574 transitions. [2020-08-21 20:29:34,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 20:29:34,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-21 20:29:34,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:29:34,074 INFO L225 Difference]: With dead ends: 445 [2020-08-21 20:29:34,074 INFO L226 Difference]: Without dead ends: 320 [2020-08-21 20:29:34,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 20:29:34,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-08-21 20:29:34,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 259. [2020-08-21 20:29:34,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-08-21 20:29:34,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 309 transitions. [2020-08-21 20:29:34,140 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 309 transitions. Word has length 77 [2020-08-21 20:29:34,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:29:34,141 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 309 transitions. [2020-08-21 20:29:34,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 20:29:34,141 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 309 transitions. [2020-08-21 20:29:34,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-21 20:29:34,144 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:29:34,144 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:29:34,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 20:29:34,145 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:29:34,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:29:34,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1775922839, now seen corresponding path program 1 times [2020-08-21 20:29:34,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:29:34,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338192691] [2020-08-21 20:29:34,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:29:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:34,445 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:29:34,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:34,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:29:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:34,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:29:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:34,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:34,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:29:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:34,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:29:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:34,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 20:29:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:34,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:34,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 20:29:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:34,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:34,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:34,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:34,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:29:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:34,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 20:29:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:34,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 20:29:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:34,581 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 20:29:34,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338192691] [2020-08-21 20:29:34,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:29:34,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 20:29:34,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693292756] [2020-08-21 20:29:34,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 20:29:34,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:29:34,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 20:29:34,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 20:29:34,585 INFO L87 Difference]: Start difference. First operand 259 states and 309 transitions. Second operand 9 states. [2020-08-21 20:29:35,006 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:29:35,595 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:29:36,530 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:29:36,792 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:29:37,186 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:29:37,407 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:29:38,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:29:38,100 INFO L93 Difference]: Finished difference Result 540 states and 684 transitions. [2020-08-21 20:29:38,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 20:29:38,101 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-08-21 20:29:38,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:29:38,106 INFO L225 Difference]: With dead ends: 540 [2020-08-21 20:29:38,106 INFO L226 Difference]: Without dead ends: 309 [2020-08-21 20:29:38,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 20:29:38,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-08-21 20:29:38,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 258. [2020-08-21 20:29:38,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-08-21 20:29:38,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 306 transitions. [2020-08-21 20:29:38,159 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 306 transitions. Word has length 91 [2020-08-21 20:29:38,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:29:38,160 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 306 transitions. [2020-08-21 20:29:38,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 20:29:38,160 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 306 transitions. [2020-08-21 20:29:38,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-21 20:29:38,162 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:29:38,163 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, 1, 1] [2020-08-21 20:29:38,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 20:29:38,163 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:29:38,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:29:38,163 INFO L82 PathProgramCache]: Analyzing trace with hash 534241489, now seen corresponding path program 1 times [2020-08-21 20:29:38,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:29:38,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813100671] [2020-08-21 20:29:38,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:29:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,404 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:29:38,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:29:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:29:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:29:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:29:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 20:29:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 20:29:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:29:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 20:29:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 20:29:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:38,602 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 20:29:38,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813100671] [2020-08-21 20:29:38,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:29:38,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 20:29:38,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529111575] [2020-08-21 20:29:38,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 20:29:38,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:29:38,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 20:29:38,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-21 20:29:38,606 INFO L87 Difference]: Start difference. First operand 258 states and 306 transitions. Second operand 10 states. [2020-08-21 20:29:39,284 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:29:39,904 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:29:40,143 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 20:29:40,394 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:29:40,645 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:29:41,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:29:41,583 INFO L93 Difference]: Finished difference Result 502 states and 624 transitions. [2020-08-21 20:29:41,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 20:29:41,584 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-08-21 20:29:41,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:29:41,586 INFO L225 Difference]: With dead ends: 502 [2020-08-21 20:29:41,586 INFO L226 Difference]: Without dead ends: 272 [2020-08-21 20:29:41,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 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 20:29:41,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-08-21 20:29:41,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 233. [2020-08-21 20:29:41,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-21 20:29:41,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 264 transitions. [2020-08-21 20:29:41,627 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 264 transitions. Word has length 103 [2020-08-21 20:29:41,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:29:41,627 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 264 transitions. [2020-08-21 20:29:41,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 20:29:41,627 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 264 transitions. [2020-08-21 20:29:41,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-21 20:29:41,629 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:29:41,630 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, 1, 1, 1, 1, 1, 1] [2020-08-21 20:29:41,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 20:29:41,630 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:29:41,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:29:41,631 INFO L82 PathProgramCache]: Analyzing trace with hash 697480839, now seen corresponding path program 1 times [2020-08-21 20:29:41,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:29:41,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133536491] [2020-08-21 20:29:41,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:29:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:41,897 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:29:41,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:41,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:29:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:41,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:29:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:41,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:41,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:29:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:41,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:29:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:41,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 20:29:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:41,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:41,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 20:29:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:41,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:41,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:42,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:42,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:29:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:42,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:42,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:42,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:42,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 20:29:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:42,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 20:29:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:42,084 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 20:29:42,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133536491] [2020-08-21 20:29:42,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:29:42,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 20:29:42,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16516953] [2020-08-21 20:29:42,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 20:29:42,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:29:42,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 20:29:42,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 20:29:42,087 INFO L87 Difference]: Start difference. First operand 233 states and 264 transitions. Second operand 11 states. [2020-08-21 20:29:42,635 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:29:42,911 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:29:43,147 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:29:43,856 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:29:44,123 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:29:44,368 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:29:45,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:29:45,328 INFO L93 Difference]: Finished difference Result 482 states and 584 transitions. [2020-08-21 20:29:45,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 20:29:45,331 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 107 [2020-08-21 20:29:45,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:29:45,333 INFO L225 Difference]: With dead ends: 482 [2020-08-21 20:29:45,334 INFO L226 Difference]: Without dead ends: 277 [2020-08-21 20:29:45,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 20:29:45,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-08-21 20:29:45,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 237. [2020-08-21 20:29:45,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-21 20:29:45,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 268 transitions. [2020-08-21 20:29:45,377 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 268 transitions. Word has length 107 [2020-08-21 20:29:45,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:29:45,377 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 268 transitions. [2020-08-21 20:29:45,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 20:29:45,378 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 268 transitions. [2020-08-21 20:29:45,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-21 20:29:45,379 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:29:45,379 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, 1, 1, 1, 1, 1, 1] [2020-08-21 20:29:45,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 20:29:45,380 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:29:45,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:29:45,380 INFO L82 PathProgramCache]: Analyzing trace with hash 456940710, now seen corresponding path program 1 times [2020-08-21 20:29:45,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:29:45,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338219422] [2020-08-21 20:29:45,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:29:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:45,632 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:29:45,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:45,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:29:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:45,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:29:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:45,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:45,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:29:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:45,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:29:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:45,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 20:29:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:45,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:45,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 20:29:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:45,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:45,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:45,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:45,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:29:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:45,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:45,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:45,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:45,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 20:29:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:45,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 20:29:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:45,786 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 20:29:45,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338219422] [2020-08-21 20:29:45,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:29:45,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 20:29:45,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13867634] [2020-08-21 20:29:45,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 20:29:45,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:29:45,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 20:29:45,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 20:29:45,788 INFO L87 Difference]: Start difference. First operand 237 states and 268 transitions. Second operand 7 states. [2020-08-21 20:29:46,153 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:29:46,672 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:29:48,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:29:48,440 INFO L93 Difference]: Finished difference Result 651 states and 808 transitions. [2020-08-21 20:29:48,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 20:29:48,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-08-21 20:29:48,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:29:48,445 INFO L225 Difference]: With dead ends: 651 [2020-08-21 20:29:48,445 INFO L226 Difference]: Without dead ends: 442 [2020-08-21 20:29:48,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 20:29:48,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-08-21 20:29:48,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 404. [2020-08-21 20:29:48,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2020-08-21 20:29:48,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 472 transitions. [2020-08-21 20:29:48,516 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 472 transitions. Word has length 107 [2020-08-21 20:29:48,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:29:48,517 INFO L479 AbstractCegarLoop]: Abstraction has 404 states and 472 transitions. [2020-08-21 20:29:48,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 20:29:48,517 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 472 transitions. [2020-08-21 20:29:48,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-21 20:29:48,519 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:29:48,519 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:29:48,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 20:29:48,520 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:29:48,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:29:48,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1562894580, now seen corresponding path program 1 times [2020-08-21 20:29:48,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:29:48,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813154001] [2020-08-21 20:29:48,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:29:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:48,834 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:29:48,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:48,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:29:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:48,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:29:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:48,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:48,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:29:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:48,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:29:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:48,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:29:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:48,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 20:29:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:48,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:48,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 20:29:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:48,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:48,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:48,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:48,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:29:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:48,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:48,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:48,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:48,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 20:29:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:48,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 20:29:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:48,991 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 20:29:48,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813154001] [2020-08-21 20:29:48,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:29:48,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 20:29:48,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363766433] [2020-08-21 20:29:48,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 20:29:48,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:29:48,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 20:29:48,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 20:29:48,994 INFO L87 Difference]: Start difference. First operand 404 states and 472 transitions. Second operand 12 states. [2020-08-21 20:29:49,434 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:29:50,097 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:29:51,091 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:29:51,395 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:29:51,645 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:29:51,910 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:29:52,169 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:29:53,460 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:29:53,727 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:29:54,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:29:54,404 INFO L93 Difference]: Finished difference Result 1116 states and 1385 transitions. [2020-08-21 20:29:54,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 20:29:54,405 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 111 [2020-08-21 20:29:54,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:29:54,411 INFO L225 Difference]: With dead ends: 1116 [2020-08-21 20:29:54,411 INFO L226 Difference]: Without dead ends: 810 [2020-08-21 20:29:54,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 20:29:54,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2020-08-21 20:29:54,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 700. [2020-08-21 20:29:54,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2020-08-21 20:29:54,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 810 transitions. [2020-08-21 20:29:54,552 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 810 transitions. Word has length 111 [2020-08-21 20:29:54,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:29:54,554 INFO L479 AbstractCegarLoop]: Abstraction has 700 states and 810 transitions. [2020-08-21 20:29:54,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 20:29:54,554 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 810 transitions. [2020-08-21 20:29:54,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-21 20:29:54,558 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:29:54,558 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:29:54,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 20:29:54,559 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:29:54,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:29:54,559 INFO L82 PathProgramCache]: Analyzing trace with hash 903450751, now seen corresponding path program 1 times [2020-08-21 20:29:54,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:29:54,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907462242] [2020-08-21 20:29:54,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:29:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,941 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:29:54,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:29:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:29:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:54,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:29:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:29:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:29:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 20:29:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:55,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:29:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:29:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:29:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 20:29:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 20:29:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:29:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 20:29:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 20:29:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:29:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:29:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:29:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 20:29:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-21 20:29:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:29:55,314 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 20:29:55,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907462242] [2020-08-21 20:29:55,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:29:55,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 20:29:55,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406099200] [2020-08-21 20:29:55,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 20:29:55,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:29:55,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 20:29:55,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 20:29:55,317 INFO L87 Difference]: Start difference. First operand 700 states and 810 transitions. Second operand 16 states. [2020-08-21 20:29:56,039 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:29:56,490 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 20:29:56,738 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 20:29:57,002 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 20:29:57,584 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:29:57,871 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:29:58,660 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 20:29:59,366 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:29:59,818 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 20:30:00,277 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:30:00,538 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:30:00,832 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:01,378 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:30:01,766 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:02,133 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 20:30:02,800 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:03,069 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 20:30:03,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:30:03,740 INFO L93 Difference]: Finished difference Result 1513 states and 1807 transitions. [2020-08-21 20:30:03,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-21 20:30:03,741 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 172 [2020-08-21 20:30:03,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:30:03,747 INFO L225 Difference]: With dead ends: 1513 [2020-08-21 20:30:03,748 INFO L226 Difference]: Without dead ends: 907 [2020-08-21 20:30:03,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-21 20:30:03,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2020-08-21 20:30:03,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 828. [2020-08-21 20:30:03,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 828 states. [2020-08-21 20:30:03,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 968 transitions. [2020-08-21 20:30:03,875 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 968 transitions. Word has length 172 [2020-08-21 20:30:03,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:30:03,876 INFO L479 AbstractCegarLoop]: Abstraction has 828 states and 968 transitions. [2020-08-21 20:30:03,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 20:30:03,876 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 968 transitions. [2020-08-21 20:30:03,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-08-21 20:30:03,882 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:30:03,882 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:30:03,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 20:30:03,883 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:30:03,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:30:03,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1791991912, now seen corresponding path program 1 times [2020-08-21 20:30:03,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:30:03,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128384901] [2020-08-21 20:30:03,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:30:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,191 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:30:04,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:30:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:30:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:30:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:30:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:30:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:30:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 20:30:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:30:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:30:04,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:30:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 20:30:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 20:30:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:30:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 20:30:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:30:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 20:30:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-21 20:30:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:30:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 20:30:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:30:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 20:30:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-21 20:30:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-21 20:30:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:30:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:30:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-08-21 20:30:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-21 20:30:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:04,702 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-08-21 20:30:04,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128384901] [2020-08-21 20:30:04,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:30:04,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 20:30:04,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424916258] [2020-08-21 20:30:04,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 20:30:04,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:30:04,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 20:30:04,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 20:30:04,705 INFO L87 Difference]: Start difference. First operand 828 states and 968 transitions. Second operand 15 states. [2020-08-21 20:30:06,464 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:30:06,743 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:06,990 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:07,254 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:30:08,685 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:09,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:30:09,742 INFO L93 Difference]: Finished difference Result 2180 states and 2653 transitions. [2020-08-21 20:30:09,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 20:30:09,743 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 303 [2020-08-21 20:30:09,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:30:09,752 INFO L225 Difference]: With dead ends: 2180 [2020-08-21 20:30:09,752 INFO L226 Difference]: Without dead ends: 1293 [2020-08-21 20:30:09,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 107 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-21 20:30:09,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2020-08-21 20:30:09,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 1090. [2020-08-21 20:30:09,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1090 states. [2020-08-21 20:30:09,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1305 transitions. [2020-08-21 20:30:09,983 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1305 transitions. Word has length 303 [2020-08-21 20:30:09,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:30:09,984 INFO L479 AbstractCegarLoop]: Abstraction has 1090 states and 1305 transitions. [2020-08-21 20:30:09,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 20:30:09,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1305 transitions. [2020-08-21 20:30:09,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-08-21 20:30:09,993 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:30:09,994 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 20:30:09,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 20:30:09,994 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:30:09,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:30:09,994 INFO L82 PathProgramCache]: Analyzing trace with hash -943069261, now seen corresponding path program 1 times [2020-08-21 20:30:09,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:30:09,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743780841] [2020-08-21 20:30:09,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:30:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,372 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:30:10,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:30:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:30:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:30:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:30:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:30:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:30:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 20:30:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:30:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:30:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:30:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 20:30:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 20:30:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:30:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 20:30:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:30:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 20:30:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 20:30:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-21 20:30:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:30:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 20:30:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:30:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 20:30:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 20:30:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-21 20:30:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:30:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:30:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-21 20:30:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-21 20:30:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:10,901 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 85 proven. 38 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2020-08-21 20:30:10,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743780841] [2020-08-21 20:30:10,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:30:10,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 20:30:10,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195262251] [2020-08-21 20:30:10,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 20:30:10,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:30:10,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 20:30:10,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 20:30:10,906 INFO L87 Difference]: Start difference. First operand 1090 states and 1305 transitions. Second operand 16 states. [2020-08-21 20:30:11,699 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:30:12,014 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 20:30:12,261 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:12,497 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:13,124 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:30:14,039 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:30:14,305 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:30:14,815 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:30:15,368 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:30:16,237 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:30:16,496 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:30:17,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:30:17,092 INFO L93 Difference]: Finished difference Result 2070 states and 2513 transitions. [2020-08-21 20:30:17,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 20:30:17,093 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 309 [2020-08-21 20:30:17,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:30:17,101 INFO L225 Difference]: With dead ends: 2070 [2020-08-21 20:30:17,101 INFO L226 Difference]: Without dead ends: 1093 [2020-08-21 20:30:17,104 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 20:30:17,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2020-08-21 20:30:17,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 1050. [2020-08-21 20:30:17,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2020-08-21 20:30:17,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1239 transitions. [2020-08-21 20:30:17,300 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1239 transitions. Word has length 309 [2020-08-21 20:30:17,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:30:17,301 INFO L479 AbstractCegarLoop]: Abstraction has 1050 states and 1239 transitions. [2020-08-21 20:30:17,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 20:30:17,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1239 transitions. [2020-08-21 20:30:17,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-08-21 20:30:17,308 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:30:17,309 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:30:17,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 20:30:17,309 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:30:17,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:30:17,310 INFO L82 PathProgramCache]: Analyzing trace with hash -828307193, now seen corresponding path program 1 times [2020-08-21 20:30:17,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:30:17,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753528593] [2020-08-21 20:30:17,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:30:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,698 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:30:17,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:30:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:30:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:30:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:30:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:30:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:30:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 20:30:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:30:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:30:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:30:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 20:30:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 20:30:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:30:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 20:30:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:30:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 20:30:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 20:30:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-21 20:30:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:30:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 20:30:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:30:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 20:30:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-21 20:30:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-21 20:30:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-21 20:30:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:30:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:30:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-21 20:30:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 20:30:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:17,984 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2020-08-21 20:30:17,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753528593] [2020-08-21 20:30:17,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:30:17,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 20:30:17,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525075578] [2020-08-21 20:30:17,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 20:30:17,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:30:17,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 20:30:17,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-21 20:30:17,987 INFO L87 Difference]: Start difference. First operand 1050 states and 1239 transitions. Second operand 11 states. [2020-08-21 20:30:19,630 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:30:19,886 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:30:20,150 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:30:20,404 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:30:20,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:30:20,813 INFO L93 Difference]: Finished difference Result 2022 states and 2422 transitions. [2020-08-21 20:30:20,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 20:30:20,814 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 314 [2020-08-21 20:30:20,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:30:20,820 INFO L225 Difference]: With dead ends: 2022 [2020-08-21 20:30:20,820 INFO L226 Difference]: Without dead ends: 1085 [2020-08-21 20:30:20,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 20:30:20,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2020-08-21 20:30:21,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1060. [2020-08-21 20:30:21,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1060 states. [2020-08-21 20:30:21,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1249 transitions. [2020-08-21 20:30:21,007 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1249 transitions. Word has length 314 [2020-08-21 20:30:21,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:30:21,009 INFO L479 AbstractCegarLoop]: Abstraction has 1060 states and 1249 transitions. [2020-08-21 20:30:21,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 20:30:21,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1249 transitions. [2020-08-21 20:30:21,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-08-21 20:30:21,015 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:30:21,015 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 20:30:21,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 20:30:21,015 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:30:21,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:30:21,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1324799625, now seen corresponding path program 1 times [2020-08-21 20:30:21,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:30:21,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059993205] [2020-08-21 20:30:21,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:30:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,369 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:30:21,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:30:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:30:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:30:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:30:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:30:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:30:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 20:30:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:30:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:30:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:30:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 20:30:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 20:30:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:30:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 20:30:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:30:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 20:30:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 20:30:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-21 20:30:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:30:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 20:30:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 20:30:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 20:30:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-21 20:30:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-21 20:30:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-21 20:30:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:30:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:30:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:30:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:30:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-21 20:30:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:21,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 20:30:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:22,059 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 93 proven. 25 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2020-08-21 20:30:22,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059993205] [2020-08-21 20:30:22,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:30:22,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 20:30:22,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082194029] [2020-08-21 20:30:22,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 20:30:22,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:30:22,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 20:30:22,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-08-21 20:30:22,063 INFO L87 Difference]: Start difference. First operand 1060 states and 1249 transitions. Second operand 16 states. [2020-08-21 20:30:22,656 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189