/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 19:22:55,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:22:55,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:22:55,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:22:55,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:22:55,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:22:55,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:22:55,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:22:55,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:22:55,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:22:55,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:22:55,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:22:55,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:22:55,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:22:55,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:22:55,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:22:55,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:22:55,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:22:55,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:22:55,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:22:55,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:22:55,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:22:55,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:22:55,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:22:55,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 19:22:55,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 19:22:55,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 19:22:55,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 19:22:55,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 19:22:55,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 19:22:55,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 19:22:55,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 19:22:55,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 19:22:55,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 19:22:55,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 19:22:55,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 19:22:55,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 19:22:55,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 19:22:55,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:22:55,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:22:55,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:22:55,446 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 19:22:55,483 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:22:55,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:22:55,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:22:55,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:22:55,486 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:22:55,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:22:55,486 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:22:55,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:22:55,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:22:55,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:22:55,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:22:55,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:22:55,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:22:55,489 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:22:55,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:22:55,489 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:22:55,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:22:55,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:22:55,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:22:55,490 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:22:55,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:22:55,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:22:55,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:22:55,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:22:55,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:22:55,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:22:55,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:22:55,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:22:55,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:22:55,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:22:55,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:22:55,824 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:22:55,828 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:22:55,829 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:22:55,830 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:22:55,831 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2020-08-18 19:22:55,888 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1acad4d57/26c16da8ad7e47b0abfb172a1d63cc2f/FLAG20ff24606 [2020-08-18 19:22:56,390 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:22:56,391 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2020-08-18 19:22:56,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1acad4d57/26c16da8ad7e47b0abfb172a1d63cc2f/FLAG20ff24606 [2020-08-18 19:22:56,699 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1acad4d57/26c16da8ad7e47b0abfb172a1d63cc2f [2020-08-18 19:22:56,707 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:22:56,709 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:22:56,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:22:56,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:22:56,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:22:56,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:22:56" (1/1) ... [2020-08-18 19:22:56,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a6afc73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:22:56, skipping insertion in model container [2020-08-18 19:22:56,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:22:56" (1/1) ... [2020-08-18 19:22:56,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:22:56,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:22:57,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:22:57,204 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:22:57,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:22:57,377 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:22:57,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:22:57 WrapperNode [2020-08-18 19:22:57,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:22:57,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:22:57,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:22:57,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:22:57,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:22:57" (1/1) ... [2020-08-18 19:22:57,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:22:57" (1/1) ... [2020-08-18 19:22:57,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:22:57" (1/1) ... [2020-08-18 19:22:57,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:22:57" (1/1) ... [2020-08-18 19:22:57,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:22:57" (1/1) ... [2020-08-18 19:22:57,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:22:57" (1/1) ... [2020-08-18 19:22:57,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:22:57" (1/1) ... [2020-08-18 19:22:57,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:22:57,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:22:57,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:22:57,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:22:57,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:22:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:22:57,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:22:57,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:22:57,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 19:22:57,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 19:22:57,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 19:22:57,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 19:22:57,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 19:22:57,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 19:22:57,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 19:22:57,539 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 19:22:57,539 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 19:22:57,540 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 19:22:57,540 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 19:22:57,540 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:22:57,540 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 19:22:57,540 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 19:22:57,541 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 19:22:57,541 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 19:22:57,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 19:22:57,541 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 19:22:57,541 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 19:22:57,541 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 19:22:57,541 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 19:22:57,542 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 19:22:57,542 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 19:22:57,542 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 19:22:57,542 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 19:22:57,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 19:22:57,542 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 19:22:57,543 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 19:22:57,543 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 19:22:57,543 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 19:22:57,543 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 19:22:57,543 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 19:22:57,543 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 19:22:57,544 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 19:22:57,544 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 19:22:57,544 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 19:22:57,544 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 19:22:57,544 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 19:22:57,544 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 19:22:57,545 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 19:22:57,545 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 19:22:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:22:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:22:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 19:22:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 19:22:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 19:22:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 19:22:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 19:22:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 19:22:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 19:22:57,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 19:22:57,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 19:22:57,547 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 19:22:57,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 19:22:57,547 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 19:22:57,547 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 19:22:57,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 19:22:57,548 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 19:22:57,548 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 19:22:57,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 19:22:57,548 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 19:22:57,549 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 19:22:57,549 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 19:22:57,549 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 19:22:57,549 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 19:22:57,549 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 19:22:57,549 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 19:22:57,550 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 19:22:57,550 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 19:22:57,550 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 19:22:57,550 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 19:22:57,550 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 19:22:57,550 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 19:22:57,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:22:57,551 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 19:22:57,551 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 19:22:57,551 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 19:22:57,551 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 19:22:57,551 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 19:22:57,551 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 19:22:57,552 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 19:22:57,552 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 19:22:57,552 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 19:22:57,552 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 19:22:57,552 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 19:22:57,552 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 19:22:57,552 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 19:22:57,553 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 19:22:57,553 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 19:22:57,553 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 19:22:57,553 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 19:22:57,553 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 19:22:57,553 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 19:22:57,554 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 19:22:57,554 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 19:22:57,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:22:57,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 19:22:57,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:22:58,745 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:22:58,745 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 19:22:58,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:22:58 BoogieIcfgContainer [2020-08-18 19:22:58,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:22:58,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:22:58,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:22:58,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:22:58,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:22:56" (1/3) ... [2020-08-18 19:22:58,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d9a187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:22:58, skipping insertion in model container [2020-08-18 19:22:58,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:22:57" (2/3) ... [2020-08-18 19:22:58,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d9a187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:22:58, skipping insertion in model container [2020-08-18 19:22:58,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:22:58" (3/3) ... [2020-08-18 19:22:58,759 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product63.cil.c [2020-08-18 19:22:58,770 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:22:58,777 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:22:58,792 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:22:58,817 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:22:58,817 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:22:58,818 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:22:58,818 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:22:58,818 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:22:58,819 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:22:58,819 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:22:58,819 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:22:58,849 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2020-08-18 19:22:58,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 19:22:58,865 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:22:58,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:22:58,867 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:22:58,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:22:58,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1593418819, now seen corresponding path program 1 times [2020-08-18 19:22:58,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:22:58,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002595493] [2020-08-18 19:22:58,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:22:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:59,549 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:22:59,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:22:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:59,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:22:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:59,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:22:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:59,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:22:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:59,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:22:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:59,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:22:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:59,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:22:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:22:59,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002595493] [2020-08-18 19:22:59,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:22:59,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 19:22:59,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390941594] [2020-08-18 19:22:59,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 19:22:59,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:22:59,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 19:22:59,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 19:22:59,666 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 3 states. [2020-08-18 19:23:00,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:23:00,998 INFO L93 Difference]: Finished difference Result 365 states and 474 transitions. [2020-08-18 19:23:00,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 19:23:01,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 19:23:01,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:23:01,016 INFO L225 Difference]: With dead ends: 365 [2020-08-18 19:23:01,017 INFO L226 Difference]: Without dead ends: 197 [2020-08-18 19:23:01,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 19:23:01,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-08-18 19:23:01,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 159. [2020-08-18 19:23:01,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-08-18 19:23:01,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 189 transitions. [2020-08-18 19:23:01,119 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 189 transitions. Word has length 46 [2020-08-18 19:23:01,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:23:01,119 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 189 transitions. [2020-08-18 19:23:01,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 19:23:01,120 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 189 transitions. [2020-08-18 19:23:01,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 19:23:01,123 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:23:01,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:23:01,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:23:01,124 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:23:01,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:23:01,124 INFO L82 PathProgramCache]: Analyzing trace with hash 261795935, now seen corresponding path program 1 times [2020-08-18 19:23:01,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:23:01,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518847360] [2020-08-18 19:23:01,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:23:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:01,433 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:23:01,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:23:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:01,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:23:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:01,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:23:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:01,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:23:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:01,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:23:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:01,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 19:23:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:01,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 19:23:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:01,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:23:01,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518847360] [2020-08-18 19:23:01,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:23:01,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:23:01,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479586268] [2020-08-18 19:23:01,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:23:01,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:23:01,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:23:01,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:23:01,486 INFO L87 Difference]: Start difference. First operand 159 states and 189 transitions. Second operand 4 states. [2020-08-18 19:23:01,982 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:03,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:23:03,040 INFO L93 Difference]: Finished difference Result 292 states and 357 transitions. [2020-08-18 19:23:03,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 19:23:03,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 19:23:03,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:23:03,045 INFO L225 Difference]: With dead ends: 292 [2020-08-18 19:23:03,045 INFO L226 Difference]: Without dead ends: 181 [2020-08-18 19:23:03,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:23:03,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-08-18 19:23:03,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 150. [2020-08-18 19:23:03,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-18 19:23:03,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2020-08-18 19:23:03,093 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 47 [2020-08-18 19:23:03,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:23:03,093 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2020-08-18 19:23:03,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:23:03,094 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2020-08-18 19:23:03,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 19:23:03,096 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:23:03,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:23:03,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:23:03,096 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:23:03,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:23:03,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1299589925, now seen corresponding path program 1 times [2020-08-18 19:23:03,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:23:03,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711642066] [2020-08-18 19:23:03,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:23:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:03,443 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:23:03,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:23:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:03,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:23:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:03,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:23:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:03,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:23:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:03,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:23:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:03,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:23:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:03,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 19:23:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:03,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:23:03,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711642066] [2020-08-18 19:23:03,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:23:03,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 19:23:03,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737332204] [2020-08-18 19:23:03,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:23:03,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:23:03,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:23:03,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:23:03,547 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand 8 states. [2020-08-18 19:23:03,868 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:23:04,182 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:04,444 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:04,692 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:05,426 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:07,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:23:07,691 INFO L93 Difference]: Finished difference Result 510 states and 633 transitions. [2020-08-18 19:23:07,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 19:23:07,692 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 19:23:07,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:23:07,698 INFO L225 Difference]: With dead ends: 510 [2020-08-18 19:23:07,698 INFO L226 Difference]: Without dead ends: 384 [2020-08-18 19:23:07,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 19:23:07,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-08-18 19:23:07,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 318. [2020-08-18 19:23:07,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-08-18 19:23:07,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 386 transitions. [2020-08-18 19:23:07,825 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 386 transitions. Word has length 51 [2020-08-18 19:23:07,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:23:07,826 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 386 transitions. [2020-08-18 19:23:07,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:23:07,826 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 386 transitions. [2020-08-18 19:23:07,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 19:23:07,829 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:23:07,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:23:07,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:23:07,829 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:23:07,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:23:07,830 INFO L82 PathProgramCache]: Analyzing trace with hash -848411279, now seen corresponding path program 1 times [2020-08-18 19:23:07,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:23:07,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921202253] [2020-08-18 19:23:07,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:23:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:08,178 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:23:08,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:23:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:08,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:23:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:08,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:23:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:08,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:23:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:08,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:23:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:08,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 19:23:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:08,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 19:23:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:08,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 19:23:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:08,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:23:08,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921202253] [2020-08-18 19:23:08,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:23:08,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 19:23:08,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979935391] [2020-08-18 19:23:08,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 19:23:08,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:23:08,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 19:23:08,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:23:08,282 INFO L87 Difference]: Start difference. First operand 318 states and 386 transitions. Second operand 12 states. [2020-08-18 19:23:08,651 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:23:08,963 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:09,238 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:09,498 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:10,053 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:10,964 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:11,386 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:23:11,722 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:23:12,003 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:23:12,295 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:23:12,655 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:23:13,042 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:23:13,495 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:15,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:23:15,835 INFO L93 Difference]: Finished difference Result 1305 states and 1782 transitions. [2020-08-18 19:23:15,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 19:23:15,836 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-18 19:23:15,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:23:15,845 INFO L225 Difference]: With dead ends: 1305 [2020-08-18 19:23:15,845 INFO L226 Difference]: Without dead ends: 1011 [2020-08-18 19:23:15,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 19:23:15,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-08-18 19:23:16,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 910. [2020-08-18 19:23:16,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2020-08-18 19:23:16,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1164 transitions. [2020-08-18 19:23:16,068 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1164 transitions. Word has length 57 [2020-08-18 19:23:16,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:23:16,069 INFO L479 AbstractCegarLoop]: Abstraction has 910 states and 1164 transitions. [2020-08-18 19:23:16,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 19:23:16,069 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1164 transitions. [2020-08-18 19:23:16,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 19:23:16,073 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:23:16,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:23:16,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:23:16,074 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:23:16,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:23:16,074 INFO L82 PathProgramCache]: Analyzing trace with hash -533846889, now seen corresponding path program 1 times [2020-08-18 19:23:16,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:23:16,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479196684] [2020-08-18 19:23:16,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:23:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:16,335 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:23:16,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:23:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:16,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:23:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:16,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:23:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:16,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:23:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:16,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:23:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:16,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 19:23:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:16,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:23:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:16,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 19:23:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:16,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 19:23:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:16,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:23:16,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479196684] [2020-08-18 19:23:16,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:23:16,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 19:23:16,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256677191] [2020-08-18 19:23:16,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 19:23:16,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:23:16,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 19:23:16,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 19:23:16,461 INFO L87 Difference]: Start difference. First operand 910 states and 1164 transitions. Second operand 6 states. [2020-08-18 19:23:16,757 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:23:18,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:23:18,922 INFO L93 Difference]: Finished difference Result 2165 states and 2945 transitions. [2020-08-18 19:23:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 19:23:18,923 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-18 19:23:18,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:23:18,934 INFO L225 Difference]: With dead ends: 2165 [2020-08-18 19:23:18,935 INFO L226 Difference]: Without dead ends: 1279 [2020-08-18 19:23:18,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:23:18,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2020-08-18 19:23:19,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1192. [2020-08-18 19:23:19,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2020-08-18 19:23:19,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1486 transitions. [2020-08-18 19:23:19,294 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1486 transitions. Word has length 61 [2020-08-18 19:23:19,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:23:19,295 INFO L479 AbstractCegarLoop]: Abstraction has 1192 states and 1486 transitions. [2020-08-18 19:23:19,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 19:23:19,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1486 transitions. [2020-08-18 19:23:19,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 19:23:19,299 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:23:19,300 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:23:19,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 19:23:19,300 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:23:19,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:23:19,301 INFO L82 PathProgramCache]: Analyzing trace with hash 2051159117, now seen corresponding path program 1 times [2020-08-18 19:23:19,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:23:19,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834774592] [2020-08-18 19:23:19,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:23:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:19,641 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:23:19,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:23:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:19,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:23:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:19,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:23:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:19,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:23:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:19,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:23:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:19,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 19:23:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:19,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:23:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:19,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 19:23:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:19,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:19,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:19,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 19:23:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:19,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 19:23:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:19,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 19:23:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:19,820 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 19:23:19,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834774592] [2020-08-18 19:23:19,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:23:19,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 19:23:19,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994025823] [2020-08-18 19:23:19,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 19:23:19,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:23:19,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 19:23:19,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:23:19,823 INFO L87 Difference]: Start difference. First operand 1192 states and 1486 transitions. Second operand 10 states. [2020-08-18 19:23:20,340 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-18 19:23:20,862 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:23:23,057 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:23:25,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:23:25,444 INFO L93 Difference]: Finished difference Result 2279 states and 2961 transitions. [2020-08-18 19:23:25,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 19:23:25,445 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 19:23:25,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:23:25,457 INFO L225 Difference]: With dead ends: 2279 [2020-08-18 19:23:25,457 INFO L226 Difference]: Without dead ends: 1402 [2020-08-18 19:23:25,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-18 19:23:25,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2020-08-18 19:23:25,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1305. [2020-08-18 19:23:25,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2020-08-18 19:23:25,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1607 transitions. [2020-08-18 19:23:25,765 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1607 transitions. Word has length 88 [2020-08-18 19:23:25,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:23:25,768 INFO L479 AbstractCegarLoop]: Abstraction has 1305 states and 1607 transitions. [2020-08-18 19:23:25,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 19:23:25,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1607 transitions. [2020-08-18 19:23:25,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 19:23:25,774 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:23:25,774 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 19:23:25,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 19:23:25,775 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:23:25,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:23:25,776 INFO L82 PathProgramCache]: Analyzing trace with hash -923959180, now seen corresponding path program 1 times [2020-08-18 19:23:25,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:23:25,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819214224] [2020-08-18 19:23:25,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:23:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,064 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:23:26,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:23:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:23:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:23:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:23:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:23:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 19:23:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:23:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:23:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:23:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 19:23:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 19:23:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 19:23:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 19:23:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 19:23:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 19:23:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:26,254 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-18 19:23:26,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819214224] [2020-08-18 19:23:26,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:23:26,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 19:23:26,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207368356] [2020-08-18 19:23:26,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:23:26,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:23:26,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:23:26,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:23:26,261 INFO L87 Difference]: Start difference. First operand 1305 states and 1607 transitions. Second operand 9 states. [2020-08-18 19:23:27,098 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:27,317 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:27,604 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:28,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:23:28,836 INFO L93 Difference]: Finished difference Result 2395 states and 3094 transitions. [2020-08-18 19:23:28,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 19:23:28,841 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 150 [2020-08-18 19:23:28,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:23:28,851 INFO L225 Difference]: With dead ends: 2395 [2020-08-18 19:23:28,851 INFO L226 Difference]: Without dead ends: 1428 [2020-08-18 19:23:28,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:23:28,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2020-08-18 19:23:29,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1305. [2020-08-18 19:23:29,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2020-08-18 19:23:29,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1605 transitions. [2020-08-18 19:23:29,152 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1605 transitions. Word has length 150 [2020-08-18 19:23:29,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:23:29,153 INFO L479 AbstractCegarLoop]: Abstraction has 1305 states and 1605 transitions. [2020-08-18 19:23:29,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:23:29,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1605 transitions. [2020-08-18 19:23:29,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 19:23:29,158 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:23:29,158 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 19:23:29,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 19:23:29,158 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:23:29,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:23:29,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1752033202, now seen corresponding path program 1 times [2020-08-18 19:23:29,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:23:29,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201480414] [2020-08-18 19:23:29,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:23:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,429 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:23:29,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:23:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:23:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:23:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:23:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:23:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 19:23:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:23:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:23:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:23:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 19:23:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 19:23:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 19:23:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 19:23:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 19:23:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 19:23:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-18 19:23:29,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201480414] [2020-08-18 19:23:29,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:23:29,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 19:23:29,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208679539] [2020-08-18 19:23:29,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 19:23:29,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:23:29,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 19:23:29,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 19:23:29,761 INFO L87 Difference]: Start difference. First operand 1305 states and 1605 transitions. Second operand 15 states. [2020-08-18 19:23:30,223 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:23:30,906 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:32,286 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:32,664 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:32,949 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:33,213 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:23:33,581 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:23:33,848 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:23:34,365 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-18 19:23:34,851 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-18 19:23:35,724 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:35,967 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:36,248 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:23:36,502 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:23:37,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:23:37,520 INFO L93 Difference]: Finished difference Result 3652 states and 4736 transitions. [2020-08-18 19:23:37,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 19:23:37,521 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 150 [2020-08-18 19:23:37,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:23:37,537 INFO L225 Difference]: With dead ends: 3652 [2020-08-18 19:23:37,537 INFO L226 Difference]: Without dead ends: 2371 [2020-08-18 19:23:37,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=264, Invalid=1068, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 19:23:37,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2020-08-18 19:23:38,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 2171. [2020-08-18 19:23:38,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2171 states. [2020-08-18 19:23:38,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2171 states to 2171 states and 2620 transitions. [2020-08-18 19:23:38,049 INFO L78 Accepts]: Start accepts. Automaton has 2171 states and 2620 transitions. Word has length 150 [2020-08-18 19:23:38,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:23:38,050 INFO L479 AbstractCegarLoop]: Abstraction has 2171 states and 2620 transitions. [2020-08-18 19:23:38,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 19:23:38,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2171 states and 2620 transitions. [2020-08-18 19:23:38,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 19:23:38,058 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:23:38,058 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 19:23:38,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 19:23:38,059 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:23:38,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:23:38,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1447990305, now seen corresponding path program 1 times [2020-08-18 19:23:38,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:23:38,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565702207] [2020-08-18 19:23:38,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:23:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,386 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:23:38,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:23:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:23:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:23:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:23:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:23:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:23:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:23:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:23:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 19:23:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 19:23:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 19:23:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 19:23:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 19:23:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 19:23:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 19:23:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:38,608 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-18 19:23:38,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565702207] [2020-08-18 19:23:38,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:23:38,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 19:23:38,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124497094] [2020-08-18 19:23:38,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 19:23:38,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:23:38,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 19:23:38,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:23:38,610 INFO L87 Difference]: Start difference. First operand 2171 states and 2620 transitions. Second operand 11 states. [2020-08-18 19:23:39,593 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:39,914 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:23:40,162 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:40,410 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:42,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:23:42,006 INFO L93 Difference]: Finished difference Result 4828 states and 6299 transitions. [2020-08-18 19:23:42,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 19:23:42,006 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 150 [2020-08-18 19:23:42,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:23:42,023 INFO L225 Difference]: With dead ends: 4828 [2020-08-18 19:23:42,023 INFO L226 Difference]: Without dead ends: 2681 [2020-08-18 19:23:42,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 19:23:42,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2020-08-18 19:23:42,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2211. [2020-08-18 19:23:42,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2211 states. [2020-08-18 19:23:42,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 2664 transitions. [2020-08-18 19:23:42,427 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 2664 transitions. Word has length 150 [2020-08-18 19:23:42,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:23:42,427 INFO L479 AbstractCegarLoop]: Abstraction has 2211 states and 2664 transitions. [2020-08-18 19:23:42,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 19:23:42,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 2664 transitions. [2020-08-18 19:23:42,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 19:23:42,434 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:23:42,434 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 19:23:42,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 19:23:42,434 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:23:42,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:23:42,435 INFO L82 PathProgramCache]: Analyzing trace with hash 940573725, now seen corresponding path program 1 times [2020-08-18 19:23:42,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:23:42,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190001641] [2020-08-18 19:23:42,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:23:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,704 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:23:42,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:23:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:23:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:23:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:23:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:23:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:23:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:23:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:23:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 19:23:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 19:23:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 19:23:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 19:23:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 19:23:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 19:23:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:42,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 19:23:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-18 19:23:43,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190001641] [2020-08-18 19:23:43,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:23:43,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 19:23:43,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116299653] [2020-08-18 19:23:43,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 19:23:43,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:23:43,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 19:23:43,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-08-18 19:23:43,025 INFO L87 Difference]: Start difference. First operand 2211 states and 2664 transitions. Second operand 13 states. [2020-08-18 19:23:43,700 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:44,046 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:44,304 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:45,155 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:45,424 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:45,680 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:47,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:23:47,316 INFO L93 Difference]: Finished difference Result 4316 states and 5505 transitions. [2020-08-18 19:23:47,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 19:23:47,316 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 150 [2020-08-18 19:23:47,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:23:47,328 INFO L225 Difference]: With dead ends: 4316 [2020-08-18 19:23:47,329 INFO L226 Difference]: Without dead ends: 2129 [2020-08-18 19:23:47,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 19:23:47,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2020-08-18 19:23:47,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 1843. [2020-08-18 19:23:47,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1843 states. [2020-08-18 19:23:47,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2184 transitions. [2020-08-18 19:23:47,622 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2184 transitions. Word has length 150 [2020-08-18 19:23:47,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:23:47,622 INFO L479 AbstractCegarLoop]: Abstraction has 1843 states and 2184 transitions. [2020-08-18 19:23:47,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 19:23:47,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2184 transitions. [2020-08-18 19:23:47,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 19:23:47,628 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:23:47,628 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:23:47,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 19:23:47,628 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:23:47,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:23:47,629 INFO L82 PathProgramCache]: Analyzing trace with hash -547203946, now seen corresponding path program 1 times [2020-08-18 19:23:47,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:23:47,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636358599] [2020-08-18 19:23:47,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:23:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:47,897 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:23:47,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:23:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:47,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:23:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:47,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:23:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:47,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:23:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:47,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:23:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:47,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 19:23:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:47,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:23:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:47,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:47,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:47,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:47,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:47,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:47,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:23:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:47,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:47,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:47,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:23:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:47,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 19:23:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:47,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:48,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 19:23:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:48,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-18 19:23:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:48,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 19:23:48,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:48,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:48,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:48,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 19:23:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:48,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-18 19:23:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:48,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-18 19:23:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:48,070 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-18 19:23:48,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636358599] [2020-08-18 19:23:48,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:23:48,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 19:23:48,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023897837] [2020-08-18 19:23:48,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 19:23:48,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:23:48,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 19:23:48,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:23:48,073 INFO L87 Difference]: Start difference. First operand 1843 states and 2184 transitions. Second operand 11 states. [2020-08-18 19:23:48,561 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:23:50,782 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:51,078 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:51,352 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:23:51,759 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:23:52,030 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:23:52,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:23:52,555 INFO L93 Difference]: Finished difference Result 2160 states and 2739 transitions. [2020-08-18 19:23:52,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-18 19:23:52,556 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 154 [2020-08-18 19:23:52,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:23:52,568 INFO L225 Difference]: With dead ends: 2160 [2020-08-18 19:23:52,569 INFO L226 Difference]: Without dead ends: 2157 [2020-08-18 19:23:52,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-08-18 19:23:52,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2020-08-18 19:23:52,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 1843. [2020-08-18 19:23:52,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1843 states. [2020-08-18 19:23:52,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2174 transitions. [2020-08-18 19:23:52,856 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2174 transitions. Word has length 154 [2020-08-18 19:23:52,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:23:52,857 INFO L479 AbstractCegarLoop]: Abstraction has 1843 states and 2174 transitions. [2020-08-18 19:23:52,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 19:23:52,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2174 transitions. [2020-08-18 19:23:52,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-18 19:23:52,863 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:23:52,864 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:23:52,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 19:23:52,864 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:23:52,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:23:52,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1229554551, now seen corresponding path program 1 times [2020-08-18 19:23:52,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:23:52,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694316226] [2020-08-18 19:23:52,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:23:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,162 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:23:53,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:23:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:23:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:23:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:23:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:23:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 19:23:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:23:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:23:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:23:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 19:23:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 19:23:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 19:23:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 19:23:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:23:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:23:53,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:23:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-18 19:23:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-18 19:23:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:23:53,372 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-18 19:23:53,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694316226] [2020-08-18 19:23:53,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:23:53,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 19:23:53,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550911753] [2020-08-18 19:23:53,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 19:23:53,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:23:53,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 19:23:53,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:23:53,374 INFO L87 Difference]: Start difference. First operand 1843 states and 2174 transitions. Second operand 12 states.