/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:02:47,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:02:47,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:02:47,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:02:47,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:02:47,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:02:47,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:02:47,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:02:47,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:02:47,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:02:47,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:02:47,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:02:47,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:02:47,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:02:47,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:02:47,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:02:47,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:02:47,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:02:47,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:02:47,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:02:47,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:02:47,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:02:47,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:02:47,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:02:47,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:02:47,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:02:47,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:02:47,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:02:47,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:02:47,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 14:02:47,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 14:02:47,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 14:02:47,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 14:02:47,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 14:02:47,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 14:02:47,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 14:02:47,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 14:02:47,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 14:02:47,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:02:47,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:02:47,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:02:47,814 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 14:02:47,867 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:02:47,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:02:47,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:02:47,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:02:47,873 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:02:47,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:02:47,873 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:02:47,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:02:47,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:02:47,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:02:47,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:02:47,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:02:47,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:02:47,877 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:02:47,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:02:47,877 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:02:47,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:02:47,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:02:47,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:02:47,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:02:47,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:02:47,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:02:47,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:02:47,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:02:47,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:02:47,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:02:47,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:02:47,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:02:47,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:02:47,880 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 -> log-additional-information=true; [2020-08-21 14:02:48,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:02:48,265 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:02:48,268 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:02:48,270 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:02:48,270 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:02:48,271 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c [2020-08-21 14:02:48,334 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ba185a1c/b7d47c70443a4237af75fff50ce3b466/FLAG18dd161d0 [2020-08-21 14:02:48,866 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:02:48,867 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c [2020-08-21 14:02:48,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ba185a1c/b7d47c70443a4237af75fff50ce3b466/FLAG18dd161d0 [2020-08-21 14:02:49,222 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ba185a1c/b7d47c70443a4237af75fff50ce3b466 [2020-08-21 14:02:49,231 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:02:49,233 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:02:49,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:02:49,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:02:49,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:02:49,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:02:49" (1/1) ... [2020-08-21 14:02:49,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20abf48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:02:49, skipping insertion in model container [2020-08-21 14:02:49,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:02:49" (1/1) ... [2020-08-21 14:02:49,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:02:49,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:02:49,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:02:49,968 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:02:50,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:02:50,099 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:02:50,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:02:50 WrapperNode [2020-08-21 14:02:50,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:02:50,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:02:50,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:02:50,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:02:50,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:02:50" (1/1) ... [2020-08-21 14:02:50,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:02:50" (1/1) ... [2020-08-21 14:02:50,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:02:50" (1/1) ... [2020-08-21 14:02:50,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:02:50" (1/1) ... [2020-08-21 14:02:50,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:02:50" (1/1) ... [2020-08-21 14:02:50,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:02:50" (1/1) ... [2020-08-21 14:02:50,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:02:50" (1/1) ... [2020-08-21 14:02:50,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:02:50,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:02:50,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:02:50,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:02:50,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:02:50" (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 14:02:50,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:02:50,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:02:50,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 14:02:50,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 14:02:50,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 14:02:50,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 14:02:50,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 14:02:50,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 14:02:50,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 14:02:50,340 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 14:02:50,341 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 14:02:50,341 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 14:02:50,341 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 14:02:50,342 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 14:02:50,342 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 14:02:50,343 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 14:02:50,343 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 14:02:50,343 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 14:02:50,343 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 14:02:50,343 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 14:02:50,344 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 14:02:50,344 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 14:02:50,344 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 14:02:50,344 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 14:02:50,344 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 14:02:50,345 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 14:02:50,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 14:02:50,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 14:02:50,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 14:02:50,347 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 14:02:50,347 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 14:02:50,348 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 14:02:50,348 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 14:02:50,348 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:02:50,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 14:02:50,348 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 14:02:50,349 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 14:02:50,349 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 14:02:50,349 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 14:02:50,349 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 14:02:50,349 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 14:02:50,349 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 14:02:50,350 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 14:02:50,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:02:50,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 14:02:50,350 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 14:02:50,351 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 14:02:50,351 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 14:02:50,352 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 14:02:50,352 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 14:02:50,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 14:02:50,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 14:02:50,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:02:50,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 14:02:50,352 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 14:02:50,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:02:50,353 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 14:02:50,353 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 14:02:50,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:02:50,354 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 14:02:50,354 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 14:02:50,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:02:50,354 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 14:02:50,354 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 14:02:50,354 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 14:02:50,355 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 14:02:50,355 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 14:02:50,355 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 14:02:50,355 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 14:02:50,355 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 14:02:50,356 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 14:02:50,356 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 14:02:50,357 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 14:02:50,357 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 14:02:50,357 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 14:02:50,358 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 14:02:50,358 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 14:02:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 14:02:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 14:02:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 14:02:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 14:02:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 14:02:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 14:02:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 14:02:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 14:02:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 14:02:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 14:02:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 14:02:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 14:02:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 14:02:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 14:02:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 14:02:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 14:02:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 14:02:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 14:02:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 14:02:50,364 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:02:50,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:02:50,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 14:02:50,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:02:51,520 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:02:51,520 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 14:02:51,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:02:51 BoogieIcfgContainer [2020-08-21 14:02:51,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:02:51,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:02:51,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:02:51,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:02:51,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:02:49" (1/3) ... [2020-08-21 14:02:51,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f04e9e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:02:51, skipping insertion in model container [2020-08-21 14:02:51,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:02:50" (2/3) ... [2020-08-21 14:02:51,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f04e9e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:02:51, skipping insertion in model container [2020-08-21 14:02:51,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:02:51" (3/3) ... [2020-08-21 14:02:51,533 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product53.cil.c [2020-08-21 14:02:51,544 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:02:51,552 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:02:51,567 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:02:51,593 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:02:51,593 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:02:51,593 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:02:51,593 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:02:51,594 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:02:51,594 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:02:51,594 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:02:51,594 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:02:51,616 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-08-21 14:02:51,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 14:02:51,630 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:02:51,631 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 14:02:51,631 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:02:51,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:02:51,639 INFO L82 PathProgramCache]: Analyzing trace with hash 2103350570, now seen corresponding path program 1 times [2020-08-21 14:02:51,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:02:51,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858323306] [2020-08-21 14:02:51,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:02:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:52,284 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:02:52,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:52,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:02:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:52,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:02:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:52,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:02:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:52,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:02:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:52,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:02:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:52,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:02:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:52,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:52,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 14:02:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:52,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 14:02:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:52,398 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 14:02:52,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858323306] [2020-08-21 14:02:52,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:02:52,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 14:02:52,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869282447] [2020-08-21 14:02:52,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 14:02:52,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:02:52,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 14:02:52,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 14:02:52,429 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 4 states. [2020-08-21 14:02:53,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:02:53,630 INFO L93 Difference]: Finished difference Result 341 states and 436 transitions. [2020-08-21 14:02:53,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 14:02:53,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 14:02:53,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:02:53,647 INFO L225 Difference]: With dead ends: 341 [2020-08-21 14:02:53,647 INFO L226 Difference]: Without dead ends: 186 [2020-08-21 14:02:53,652 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 14:02:53,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-21 14:02:53,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 156. [2020-08-21 14:02:53,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-08-21 14:02:53,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 184 transitions. [2020-08-21 14:02:53,753 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 184 transitions. Word has length 59 [2020-08-21 14:02:53,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:02:53,754 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 184 transitions. [2020-08-21 14:02:53,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 14:02:53,754 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 184 transitions. [2020-08-21 14:02:53,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 14:02:53,758 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:02:53,758 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 14:02:53,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:02:53,759 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:02:53,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:02:53,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1329026362, now seen corresponding path program 1 times [2020-08-21 14:02:53,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:02:53,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136658525] [2020-08-21 14:02:53,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:02:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:54,163 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:02:54,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:54,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:02:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:54,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:02:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:54,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:02:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:54,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:02:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:54,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:02:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:54,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:02:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:54,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:54,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 14:02:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:54,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 14:02:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:54,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:02:54,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136658525] [2020-08-21 14:02:54,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:02:54,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 14:02:54,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261417141] [2020-08-21 14:02:54,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 14:02:54,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:02:54,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 14:02:54,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:02:54,319 INFO L87 Difference]: Start difference. First operand 156 states and 184 transitions. Second operand 9 states. [2020-08-21 14:02:54,659 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:02:54,992 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:02:55,236 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:02:55,475 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:02:56,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:02:56,956 INFO L93 Difference]: Finished difference Result 314 states and 391 transitions. [2020-08-21 14:02:56,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 14:02:56,957 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-21 14:02:56,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:02:56,961 INFO L225 Difference]: With dead ends: 314 [2020-08-21 14:02:56,961 INFO L226 Difference]: Without dead ends: 186 [2020-08-21 14:02:56,963 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 14:02:56,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-21 14:02:57,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 156. [2020-08-21 14:02:57,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-08-21 14:02:57,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 183 transitions. [2020-08-21 14:02:57,013 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 183 transitions. Word has length 64 [2020-08-21 14:02:57,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:02:57,013 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 183 transitions. [2020-08-21 14:02:57,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 14:02:57,014 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 183 transitions. [2020-08-21 14:02:57,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-21 14:02:57,016 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:02:57,016 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:02:57,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:02:57,017 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:02:57,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:02:57,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1768093168, now seen corresponding path program 1 times [2020-08-21 14:02:57,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:02:57,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618794032] [2020-08-21 14:02:57,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:02:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:57,306 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:02:57,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:57,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:02:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:57,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:02:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:57,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:02:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:57,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:02:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:57,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:02:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:57,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:02:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:57,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:57,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:02:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:57,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:02:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:57,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:02:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:57,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:02:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:57,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-21 14:02:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:57,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 14:02:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:57,463 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 14:02:57,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618794032] [2020-08-21 14:02:57,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:02:57,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 14:02:57,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502774282] [2020-08-21 14:02:57,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 14:02:57,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:02:57,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 14:02:57,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 14:02:57,466 INFO L87 Difference]: Start difference. First operand 156 states and 183 transitions. Second operand 7 states. [2020-08-21 14:02:57,807 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:02:59,233 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:03:00,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:03:00,013 INFO L93 Difference]: Finished difference Result 457 states and 594 transitions. [2020-08-21 14:03:00,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 14:03:00,014 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-08-21 14:03:00,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:03:00,019 INFO L225 Difference]: With dead ends: 457 [2020-08-21 14:03:00,019 INFO L226 Difference]: Without dead ends: 329 [2020-08-21 14:03:00,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 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 14:03:00,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-08-21 14:03:00,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 268. [2020-08-21 14:03:00,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-21 14:03:00,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 319 transitions. [2020-08-21 14:03:00,079 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 319 transitions. Word has length 82 [2020-08-21 14:03:00,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:03:00,080 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 319 transitions. [2020-08-21 14:03:00,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 14:03:00,080 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 319 transitions. [2020-08-21 14:03:00,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-21 14:03:00,089 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:03:00,090 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:03:00,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:03:00,090 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:03:00,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:03:00,090 INFO L82 PathProgramCache]: Analyzing trace with hash -856267590, now seen corresponding path program 1 times [2020-08-21 14:03:00,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:03:00,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154659234] [2020-08-21 14:03:00,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:03:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:00,413 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:03:00,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:00,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:03:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:00,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:00,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:03:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:00,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:03:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:00,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:03:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:00,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:03:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:00,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:00,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:03:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:00,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:00,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:00,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:00,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:00,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:03:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:00,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:03:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:00,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 14:03:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:00,537 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 14:03:00,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154659234] [2020-08-21 14:03:00,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:03:00,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 14:03:00,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372240164] [2020-08-21 14:03:00,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 14:03:00,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:03:00,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 14:03:00,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:03:00,540 INFO L87 Difference]: Start difference. First operand 268 states and 319 transitions. Second operand 9 states. [2020-08-21 14:03:00,892 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:03:01,460 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:02,209 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:03:02,537 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:03:02,982 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:03,227 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:03,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:03:03,942 INFO L93 Difference]: Finished difference Result 558 states and 704 transitions. [2020-08-21 14:03:03,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 14:03:03,944 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-08-21 14:03:03,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:03:03,948 INFO L225 Difference]: With dead ends: 558 [2020-08-21 14:03:03,948 INFO L226 Difference]: Without dead ends: 318 [2020-08-21 14:03:03,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 14:03:03,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-08-21 14:03:04,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 267. [2020-08-21 14:03:04,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-08-21 14:03:04,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 316 transitions. [2020-08-21 14:03:04,007 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 316 transitions. Word has length 96 [2020-08-21 14:03:04,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:03:04,008 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 316 transitions. [2020-08-21 14:03:04,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 14:03:04,008 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 316 transitions. [2020-08-21 14:03:04,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 14:03:04,010 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:03:04,010 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:03:04,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 14:03:04,011 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:03:04,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:03:04,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1863541240, now seen corresponding path program 1 times [2020-08-21 14:03:04,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:03:04,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925418495] [2020-08-21 14:03:04,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:03:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:04,252 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:03:04,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:04,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:03:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:04,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:04,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:03:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:04,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:03:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:04,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:03:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:04,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:03:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:04,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:04,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 14:03:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:04,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:04,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:04,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:04,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:04,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:03:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:04,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 14:03:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:04,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 14:03:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:04,440 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 14:03:04,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925418495] [2020-08-21 14:03:04,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:03:04,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 14:03:04,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202544513] [2020-08-21 14:03:04,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 14:03:04,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:03:04,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 14:03:04,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-21 14:03:04,443 INFO L87 Difference]: Start difference. First operand 267 states and 316 transitions. Second operand 10 states. [2020-08-21 14:03:04,992 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:03:05,617 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:05,873 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 14:03:06,135 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:03:06,365 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:03:07,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:03:07,300 INFO L93 Difference]: Finished difference Result 518 states and 636 transitions. [2020-08-21 14:03:07,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 14:03:07,302 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-21 14:03:07,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:03:07,305 INFO L225 Difference]: With dead ends: 518 [2020-08-21 14:03:07,306 INFO L226 Difference]: Without dead ends: 279 [2020-08-21 14:03:07,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-08-21 14:03:07,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-08-21 14:03:07,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 242. [2020-08-21 14:03:07,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-21 14:03:07,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 274 transitions. [2020-08-21 14:03:07,356 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 274 transitions. Word has length 93 [2020-08-21 14:03:07,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:03:07,356 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 274 transitions. [2020-08-21 14:03:07,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 14:03:07,356 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 274 transitions. [2020-08-21 14:03:07,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 14:03:07,358 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:03:07,358 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:03:07,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 14:03:07,358 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:03:07,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:03:07,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1010732805, now seen corresponding path program 1 times [2020-08-21 14:03:07,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:03:07,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036590660] [2020-08-21 14:03:07,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:03:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:07,629 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:03:07,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:07,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:03:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:07,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:07,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:03:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:07,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:03:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:07,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:03:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:07,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:03:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:07,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:07,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:03:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:07,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:07,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:07,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:07,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:07,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:03:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:07,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 14:03:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:07,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:03:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:07,842 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 14:03:07,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036590660] [2020-08-21 14:03:07,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:03:07,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 14:03:07,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108805846] [2020-08-21 14:03:07,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 14:03:07,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:03:07,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 14:03:07,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 14:03:07,846 INFO L87 Difference]: Start difference. First operand 242 states and 274 transitions. Second operand 11 states. [2020-08-21 14:03:08,397 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:08,645 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:03:08,874 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:03:09,566 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:03:09,840 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:03:10,086 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:03:11,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:03:11,182 INFO L93 Difference]: Finished difference Result 500 states and 606 transitions. [2020-08-21 14:03:11,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 14:03:11,183 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 97 [2020-08-21 14:03:11,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:03:11,189 INFO L225 Difference]: With dead ends: 500 [2020-08-21 14:03:11,189 INFO L226 Difference]: Without dead ends: 286 [2020-08-21 14:03:11,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 14:03:11,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-08-21 14:03:11,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 246. [2020-08-21 14:03:11,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-08-21 14:03:11,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 278 transitions. [2020-08-21 14:03:11,281 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 278 transitions. Word has length 97 [2020-08-21 14:03:11,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:03:11,282 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 278 transitions. [2020-08-21 14:03:11,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 14:03:11,283 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 278 transitions. [2020-08-21 14:03:11,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 14:03:11,285 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:03:11,285 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:03:11,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 14:03:11,286 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:03:11,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:03:11,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1340498566, now seen corresponding path program 1 times [2020-08-21 14:03:11,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:03:11,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079579093] [2020-08-21 14:03:11,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:03:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:11,560 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:03:11,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:11,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:03:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:11,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:11,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:03:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:11,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:03:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:11,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:03:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:11,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:03:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:11,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:11,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:03:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:11,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:11,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:11,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:11,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:11,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:03:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:11,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 14:03:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:11,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:03:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:11,771 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 14:03:11,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079579093] [2020-08-21 14:03:11,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:03:11,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 14:03:11,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533229172] [2020-08-21 14:03:11,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 14:03:11,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:03:11,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 14:03:11,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 14:03:11,780 INFO L87 Difference]: Start difference. First operand 246 states and 278 transitions. Second operand 7 states. [2020-08-21 14:03:12,116 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:03:12,620 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:03:14,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:03:14,494 INFO L93 Difference]: Finished difference Result 679 states and 843 transitions. [2020-08-21 14:03:14,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 14:03:14,497 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-08-21 14:03:14,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:03:14,500 INFO L225 Difference]: With dead ends: 679 [2020-08-21 14:03:14,500 INFO L226 Difference]: Without dead ends: 461 [2020-08-21 14:03:14,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 14:03:14,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2020-08-21 14:03:14,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 423. [2020-08-21 14:03:14,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-08-21 14:03:14,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 494 transitions. [2020-08-21 14:03:14,572 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 494 transitions. Word has length 97 [2020-08-21 14:03:14,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:03:14,572 INFO L479 AbstractCegarLoop]: Abstraction has 423 states and 494 transitions. [2020-08-21 14:03:14,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 14:03:14,573 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 494 transitions. [2020-08-21 14:03:14,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-08-21 14:03:14,574 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:03:14,574 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:03:14,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 14:03:14,575 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:03:14,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:03:14,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1424414732, now seen corresponding path program 1 times [2020-08-21 14:03:14,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:03:14,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278616856] [2020-08-21 14:03:14,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:03:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:14,900 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:03:14,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:14,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:03:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:14,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:14,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:03:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:14,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:03:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:14,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:03:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:14,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:03:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:14,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 14:03:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:14,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:14,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 14:03:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:15,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:15,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:15,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:15,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:15,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:03:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:15,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 14:03:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:15,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 14:03:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:15,046 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 14:03:15,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278616856] [2020-08-21 14:03:15,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:03:15,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 14:03:15,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593297471] [2020-08-21 14:03:15,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 14:03:15,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:03:15,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 14:03:15,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:03:15,049 INFO L87 Difference]: Start difference. First operand 423 states and 494 transitions. Second operand 12 states. [2020-08-21 14:03:15,441 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:03:16,124 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:03:17,189 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:17,506 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:17,756 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:03:18,042 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:18,288 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:19,494 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:03:19,750 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:03:20,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:03:20,569 INFO L93 Difference]: Finished difference Result 1166 states and 1447 transitions. [2020-08-21 14:03:20,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 14:03:20,570 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 101 [2020-08-21 14:03:20,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:03:20,577 INFO L225 Difference]: With dead ends: 1166 [2020-08-21 14:03:20,577 INFO L226 Difference]: Without dead ends: 846 [2020-08-21 14:03:20,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 14:03:20,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2020-08-21 14:03:20,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 733. [2020-08-21 14:03:20,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-08-21 14:03:20,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 847 transitions. [2020-08-21 14:03:20,759 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 847 transitions. Word has length 101 [2020-08-21 14:03:20,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:03:20,761 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 847 transitions. [2020-08-21 14:03:20,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 14:03:20,761 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 847 transitions. [2020-08-21 14:03:20,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-08-21 14:03:20,768 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:03:20,769 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:03:20,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 14:03:20,769 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:03:20,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:03:20,770 INFO L82 PathProgramCache]: Analyzing trace with hash -578790576, now seen corresponding path program 1 times [2020-08-21 14:03:20,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:03:20,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100683377] [2020-08-21 14:03:20,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:03:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,076 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:03:21,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:03:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:03:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:03:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:03:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:03:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:03:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 14:03:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:03:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 14:03:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:03:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 14:03:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:03:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:03:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 14:03:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-21 14:03:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-21 14:03:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:21,459 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 14:03:21,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100683377] [2020-08-21 14:03:21,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:03:21,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 14:03:21,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933934773] [2020-08-21 14:03:21,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 14:03:21,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:03:21,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 14:03:21,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 14:03:21,463 INFO L87 Difference]: Start difference. First operand 733 states and 847 transitions. Second operand 16 states. [2020-08-21 14:03:22,327 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 14:03:22,875 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-21 14:03:23,138 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 14:03:23,375 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 14:03:23,994 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:03:24,266 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 14:03:24,628 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 14:03:25,339 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:03:25,676 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 14:03:26,457 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:26,986 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-21 14:03:27,302 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:03:27,850 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:03:28,272 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:03:28,959 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 14:03:29,234 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 14:03:29,902 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-21 14:03:30,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:03:30,429 INFO L93 Difference]: Finished difference Result 1574 states and 1876 transitions. [2020-08-21 14:03:30,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-08-21 14:03:30,430 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 178 [2020-08-21 14:03:30,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:03:30,436 INFO L225 Difference]: With dead ends: 1574 [2020-08-21 14:03:30,436 INFO L226 Difference]: Without dead ends: 940 [2020-08-21 14:03:30,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=600, Invalid=2370, Unknown=0, NotChecked=0, Total=2970 [2020-08-21 14:03:30,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2020-08-21 14:03:30,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 861. [2020-08-21 14:03:30,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-08-21 14:03:30,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1005 transitions. [2020-08-21 14:03:30,606 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1005 transitions. Word has length 178 [2020-08-21 14:03:30,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:03:30,607 INFO L479 AbstractCegarLoop]: Abstraction has 861 states and 1005 transitions. [2020-08-21 14:03:30,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 14:03:30,607 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1005 transitions. [2020-08-21 14:03:30,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-08-21 14:03:30,613 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:03:30,614 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:03:30,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 14:03:30,614 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:03:30,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:03:30,615 INFO L82 PathProgramCache]: Analyzing trace with hash 2132607531, now seen corresponding path program 1 times [2020-08-21 14:03:30,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:03:30,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077754737] [2020-08-21 14:03:30,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:03:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:30,925 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:03:30,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:30,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:03:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:30,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:30,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:03:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:30,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:03:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:30,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:03:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:30,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:03:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:30,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:03:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:30,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:30,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 14:03:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:03:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 14:03:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 14:03:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:03:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:03:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 14:03:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 14:03:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-21 14:03:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:03:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:03:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 14:03:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-21 14:03:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-21 14:03:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-21 14:03:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:03:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-21 14:03:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-08-21 14:03:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:31,373 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 77 proven. 31 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-08-21 14:03:31,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077754737] [2020-08-21 14:03:31,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:03:31,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 14:03:31,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265146515] [2020-08-21 14:03:31,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 14:03:31,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:03:31,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 14:03:31,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 14:03:31,376 INFO L87 Difference]: Start difference. First operand 861 states and 1005 transitions. Second operand 15 states. [2020-08-21 14:03:32,634 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:03:33,319 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:03:33,812 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 14:03:34,323 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 14:03:34,564 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:03:34,839 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:03:35,085 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:03:35,316 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:03:36,782 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:38,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:03:38,254 INFO L93 Difference]: Finished difference Result 2247 states and 2712 transitions. [2020-08-21 14:03:38,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 14:03:38,255 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 301 [2020-08-21 14:03:38,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:03:38,265 INFO L225 Difference]: With dead ends: 2247 [2020-08-21 14:03:38,265 INFO L226 Difference]: Without dead ends: 1387 [2020-08-21 14:03:38,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-21 14:03:38,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2020-08-21 14:03:38,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1191. [2020-08-21 14:03:38,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1191 states. [2020-08-21 14:03:38,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1402 transitions. [2020-08-21 14:03:38,532 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1402 transitions. Word has length 301 [2020-08-21 14:03:38,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:03:38,533 INFO L479 AbstractCegarLoop]: Abstraction has 1191 states and 1402 transitions. [2020-08-21 14:03:38,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 14:03:38,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1402 transitions. [2020-08-21 14:03:38,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-08-21 14:03:38,539 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:03:38,539 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:03:38,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 14:03:38,540 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:03:38,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:03:38,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1264198018, now seen corresponding path program 1 times [2020-08-21 14:03:38,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:03:38,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939376845] [2020-08-21 14:03:38,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:03:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:38,824 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:03:38,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:38,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:03:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:38,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:38,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:03:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:38,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:03:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:38,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:03:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:38,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:03:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:38,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:03:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:38,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:38,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:38,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 14:03:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:38,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:38,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:38,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:38,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:38,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:03:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:38,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 14:03:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:38,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:38,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 14:03:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:03:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:03:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 14:03:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 14:03:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 14:03:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-21 14:03:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:03:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:03:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 14:03:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-21 14:03:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 14:03:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:03:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-08-21 14:03:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-21 14:03:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:39,310 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 85 proven. 42 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-08-21 14:03:39,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939376845] [2020-08-21 14:03:39,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:03:39,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 14:03:39,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906124421] [2020-08-21 14:03:39,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 14:03:39,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:03:39,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 14:03:39,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 14:03:39,313 INFO L87 Difference]: Start difference. First operand 1191 states and 1402 transitions. Second operand 16 states. [2020-08-21 14:03:40,020 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:03:40,365 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 14:03:40,629 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:03:40,879 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:03:41,516 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:42,303 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:03:42,639 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:42,902 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:43,434 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:44,408 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:44,665 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:45,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:03:45,082 INFO L93 Difference]: Finished difference Result 2264 states and 2700 transitions. [2020-08-21 14:03:45,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 14:03:45,083 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 303 [2020-08-21 14:03:45,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:03:45,095 INFO L225 Difference]: With dead ends: 2264 [2020-08-21 14:03:45,095 INFO L226 Difference]: Without dead ends: 1194 [2020-08-21 14:03:45,099 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 14:03:45,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-08-21 14:03:45,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1151. [2020-08-21 14:03:45,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1151 states. [2020-08-21 14:03:45,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1335 transitions. [2020-08-21 14:03:45,319 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1335 transitions. Word has length 303 [2020-08-21 14:03:45,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:03:45,319 INFO L479 AbstractCegarLoop]: Abstraction has 1151 states and 1335 transitions. [2020-08-21 14:03:45,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 14:03:45,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1335 transitions. [2020-08-21 14:03:45,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-08-21 14:03:45,329 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:03:45,329 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:03:45,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 14:03:45,330 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:03:45,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:03:45,330 INFO L82 PathProgramCache]: Analyzing trace with hash -711568706, now seen corresponding path program 1 times [2020-08-21 14:03:45,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:03:45,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593900481] [2020-08-21 14:03:45,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:03:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,626 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:03:45,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:03:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:03:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:03:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:03:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:03:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:03:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 14:03:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:03:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 14:03:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 14:03:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:03:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:03:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 14:03:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 14:03:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 14:03:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-21 14:03:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:03:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:03:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 14:03:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 14:03:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-08-21 14:03:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-21 14:03:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:03:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-21 14:03:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:45,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-21 14:03:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:46,083 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-08-21 14:03:46,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593900481] [2020-08-21 14:03:46,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:03:46,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 14:03:46,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634606402] [2020-08-21 14:03:46,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 14:03:46,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:03:46,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 14:03:46,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-08-21 14:03:46,088 INFO L87 Difference]: Start difference. First operand 1151 states and 1335 transitions. Second operand 14 states.