/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_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 19:21:51,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:21:51,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:21:51,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:21:51,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:21:51,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:21:51,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:21:51,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:21:51,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:21:51,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:21:51,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:21:51,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:21:51,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:21:51,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:21:51,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:21:51,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:21:51,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:21:51,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:21:51,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:21:51,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:21:51,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:21:51,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:21:51,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:21:51,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:21:51,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 19:21:51,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 19:21:51,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 19:21:51,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 19:21:51,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 19:21:51,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 19:21:51,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 19:21:51,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 19:21:51,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 19:21:51,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 19:21:51,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 19:21:51,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 19:21:51,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 19:21:51,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 19:21:51,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:21:51,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:21:51,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:21:51,494 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 19:21:51,517 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:21:51,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:21:51,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:21:51,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:21:51,519 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:21:51,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:21:51,520 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:21:51,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:21:51,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:21:51,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:21:51,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:21:51,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:21:51,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:21:51,521 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:21:51,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:21:51,522 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:21:51,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:21:51,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:21:51,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:21:51,522 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:21:51,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:21:51,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:21:51,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:21:51,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:21:51,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:21:51,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:21:51,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:21:51,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:21:51,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:21:51,524 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 19:21:51,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:21:51,831 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:21:51,835 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:21:51,836 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:21:51,837 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:21:51,838 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product35.cil.c [2020-08-18 19:21:51,899 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5233857f/2d08afc104ae4e2abc7a9c7158c3f465/FLAGd619f15f9 [2020-08-18 19:21:52,480 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:21:52,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product35.cil.c [2020-08-18 19:21:52,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5233857f/2d08afc104ae4e2abc7a9c7158c3f465/FLAGd619f15f9 [2020-08-18 19:21:52,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5233857f/2d08afc104ae4e2abc7a9c7158c3f465 [2020-08-18 19:21:52,859 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:21:52,861 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:21:52,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:21:52,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:21:52,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:21:52,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:21:52" (1/1) ... [2020-08-18 19:21:52,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@248aaf70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:21:52, skipping insertion in model container [2020-08-18 19:21:52,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:21:52" (1/1) ... [2020-08-18 19:21:52,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:21:52,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:21:53,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:21:53,339 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:21:53,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:21:53,478 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:21:53,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:21:53 WrapperNode [2020-08-18 19:21:53,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:21:53,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:21:53,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:21:53,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:21:53,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:21:53" (1/1) ... [2020-08-18 19:21:53,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:21:53" (1/1) ... [2020-08-18 19:21:53,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:21:53" (1/1) ... [2020-08-18 19:21:53,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:21:53" (1/1) ... [2020-08-18 19:21:53,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:21:53" (1/1) ... [2020-08-18 19:21:53,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:21:53" (1/1) ... [2020-08-18 19:21:53,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:21:53" (1/1) ... [2020-08-18 19:21:53,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:21:53,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:21:53,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:21:53,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:21:53,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:21:53" (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 19:21:53,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:21:53,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:21:53,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 19:21:53,673 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 19:21:53,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 19:21:53,673 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 19:21:53,674 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 19:21:53,674 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 19:21:53,674 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 19:21:53,674 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 19:21:53,674 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 19:21:53,674 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 19:21:53,675 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 19:21:53,675 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 19:21:53,675 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 19:21:53,675 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 19:21:53,675 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 19:21:53,675 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 19:21:53,676 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 19:21:53,676 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:21:53,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 19:21:53,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 19:21:53,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 19:21:53,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 19:21:53,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 19:21:53,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 19:21:53,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 19:21:53,677 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 19:21:53,677 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 19:21:53,677 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 19:21:53,678 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 19:21:53,678 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 19:21:53,678 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 19:21:53,678 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 19:21:53,678 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 19:21:53,678 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 19:21:53,679 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 19:21:53,679 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 19:21:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:21:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:21:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 19:21:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 19:21:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 19:21:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 19:21:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 19:21:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 19:21:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 19:21:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 19:21:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 19:21:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 19:21:53,681 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 19:21:53,681 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 19:21:53,681 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 19:21:53,681 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 19:21:53,681 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 19:21:53,681 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 19:21:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 19:21:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 19:21:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 19:21:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 19:21:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 19:21:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 19:21:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 19:21:53,683 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 19:21:53,683 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 19:21:53,683 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 19:21:53,683 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 19:21:53,683 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 19:21:53,683 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 19:21:53,683 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:21:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 19:21:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 19:21:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 19:21:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 19:21:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 19:21:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 19:21:53,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 19:21:53,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 19:21:53,685 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 19:21:53,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 19:21:53,685 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 19:21:53,685 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 19:21:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 19:21:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 19:21:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 19:21:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 19:21:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 19:21:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:21:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 19:21:53,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:21:54,781 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:21:54,781 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 19:21:54,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:21:54 BoogieIcfgContainer [2020-08-18 19:21:54,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:21:54,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:21:54,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:21:54,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:21:54,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:21:52" (1/3) ... [2020-08-18 19:21:54,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a517b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:21:54, skipping insertion in model container [2020-08-18 19:21:54,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:21:53" (2/3) ... [2020-08-18 19:21:54,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a517b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:21:54, skipping insertion in model container [2020-08-18 19:21:54,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:21:54" (3/3) ... [2020-08-18 19:21:54,797 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product35.cil.c [2020-08-18 19:21:54,809 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:21:54,818 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:21:54,834 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:21:54,863 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:21:54,863 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:21:54,863 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:21:54,863 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:21:54,864 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:21:54,864 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:21:54,864 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:21:54,864 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:21:54,888 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-08-18 19:21:54,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 19:21:54,899 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:21:54,900 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 19:21:54,901 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:21:54,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:21:54,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1148002369, now seen corresponding path program 1 times [2020-08-18 19:21:54,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:21:54,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281945500] [2020-08-18 19:21:54,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:21:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:55,565 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:21:55,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:21:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:55,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:21:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:55,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:21:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:55,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:21:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:55,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:21:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:55,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:21:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:55,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:21:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:55,716 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 19:21:55,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281945500] [2020-08-18 19:21:55,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:21:55,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 19:21:55,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618838095] [2020-08-18 19:21:55,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 19:21:55,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:21:55,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 19:21:55,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 19:21:55,757 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 3 states. [2020-08-18 19:21:56,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:21:56,935 INFO L93 Difference]: Finished difference Result 269 states and 354 transitions. [2020-08-18 19:21:56,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 19:21:56,938 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 19:21:56,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:21:56,953 INFO L225 Difference]: With dead ends: 269 [2020-08-18 19:21:56,953 INFO L226 Difference]: Without dead ends: 146 [2020-08-18 19:21:56,958 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 19:21:56,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-18 19:21:57,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 114. [2020-08-18 19:21:57,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-18 19:21:57,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-08-18 19:21:57,067 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 46 [2020-08-18 19:21:57,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:21:57,068 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-08-18 19:21:57,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 19:21:57,068 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-08-18 19:21:57,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 19:21:57,074 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:21:57,075 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 19:21:57,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:21:57,075 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:21:57,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:21:57,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1455677075, now seen corresponding path program 1 times [2020-08-18 19:21:57,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:21:57,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500879320] [2020-08-18 19:21:57,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:21:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:57,477 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:21:57,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:21:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:57,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:21:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:57,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:21:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:57,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:21:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:57,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:21:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:57,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 19:21:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:57,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 19:21:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:57,543 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 19:21:57,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500879320] [2020-08-18 19:21:57,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:21:57,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:21:57,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936635581] [2020-08-18 19:21:57,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:21:57,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:21:57,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:21:57,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:21:57,547 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 4 states. [2020-08-18 19:21:57,981 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:21:58,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:21:58,742 INFO L93 Difference]: Finished difference Result 193 states and 235 transitions. [2020-08-18 19:21:58,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 19:21:58,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 19:21:58,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:21:58,747 INFO L225 Difference]: With dead ends: 193 [2020-08-18 19:21:58,747 INFO L226 Difference]: Without dead ends: 130 [2020-08-18 19:21:58,749 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 19:21:58,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-18 19:21:58,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 105. [2020-08-18 19:21:58,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-18 19:21:58,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2020-08-18 19:21:58,781 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 47 [2020-08-18 19:21:58,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:21:58,781 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2020-08-18 19:21:58,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:21:58,782 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2020-08-18 19:21:58,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 19:21:58,784 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:21:58,784 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 19:21:58,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:21:58,784 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:21:58,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:21:58,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1980509365, now seen corresponding path program 1 times [2020-08-18 19:21:58,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:21:58,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913830062] [2020-08-18 19:21:58,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:21:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:59,100 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:21:59,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:21:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:59,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:21:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:59,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:21:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:59,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:21:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:59,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:21:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:59,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:21:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:59,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 19:21:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:59,240 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 19:21:59,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913830062] [2020-08-18 19:21:59,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:21:59,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 19:21:59,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452816223] [2020-08-18 19:21:59,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:21:59,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:21:59,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:21:59,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:21:59,243 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand 8 states. [2020-08-18 19:21:59,671 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:21:59,986 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:22:00,253 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:22:00,487 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:22:01,186 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:22:02,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:22:02,519 INFO L93 Difference]: Finished difference Result 363 states and 449 transitions. [2020-08-18 19:22:02,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 19:22:02,521 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 19:22:02,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:22:02,529 INFO L225 Difference]: With dead ends: 363 [2020-08-18 19:22:02,530 INFO L226 Difference]: Without dead ends: 282 [2020-08-18 19:22:02,533 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 19:22:02,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-18 19:22:02,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 216. [2020-08-18 19:22:02,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-18 19:22:02,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 258 transitions. [2020-08-18 19:22:02,641 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 258 transitions. Word has length 51 [2020-08-18 19:22:02,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:22:02,642 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 258 transitions. [2020-08-18 19:22:02,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:22:02,643 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 258 transitions. [2020-08-18 19:22:02,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 19:22:02,657 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:22:02,657 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 19:22:02,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:22:02,657 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:22:02,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:22:02,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1381408640, now seen corresponding path program 1 times [2020-08-18 19:22:02,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:22:02,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843731944] [2020-08-18 19:22:02,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:22:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:02,999 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:22:03,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:22:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:03,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:22:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:03,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:22:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:03,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:22:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:03,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:22:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:03,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 19:22:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:03,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 19:22:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:03,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 19:22:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:03,106 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 19:22:03,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843731944] [2020-08-18 19:22:03,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:22:03,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 19:22:03,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240823341] [2020-08-18 19:22:03,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 19:22:03,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:22:03,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 19:22:03,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:22:03,108 INFO L87 Difference]: Start difference. First operand 216 states and 258 transitions. Second operand 12 states. [2020-08-18 19:22:03,597 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:22:03,901 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:22:04,150 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:22:04,396 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:22:04,980 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:22:05,739 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:22:06,078 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:22:06,379 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:22:06,652 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:22:06,885 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:22:07,210 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:22:07,504 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:22:07,750 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:22:09,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:22:09,103 INFO L93 Difference]: Finished difference Result 861 states and 1198 transitions. [2020-08-18 19:22:09,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 19:22:09,106 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-18 19:22:09,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:22:09,114 INFO L225 Difference]: With dead ends: 861 [2020-08-18 19:22:09,114 INFO L226 Difference]: Without dead ends: 669 [2020-08-18 19:22:09,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 19:22:09,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-08-18 19:22:09,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 580. [2020-08-18 19:22:09,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-08-18 19:22:09,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 732 transitions. [2020-08-18 19:22:09,253 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 732 transitions. Word has length 57 [2020-08-18 19:22:09,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:22:09,253 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 732 transitions. [2020-08-18 19:22:09,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 19:22:09,254 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 732 transitions. [2020-08-18 19:22:09,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 19:22:09,256 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:22:09,256 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 19:22:09,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:22:09,257 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:22:09,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:22:09,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1781576154, now seen corresponding path program 1 times [2020-08-18 19:22:09,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:22:09,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368659438] [2020-08-18 19:22:09,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:22:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:09,503 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:22:09,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:22:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:09,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:22:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:09,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:22:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:09,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:22:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:09,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:22:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:09,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 19:22:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:09,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:22:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:09,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 19:22:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:09,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 19:22:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:09,584 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 19:22:09,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368659438] [2020-08-18 19:22:09,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:22:09,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 19:22:09,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464383269] [2020-08-18 19:22:09,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 19:22:09,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:22:09,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 19:22:09,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 19:22:09,588 INFO L87 Difference]: Start difference. First operand 580 states and 732 transitions. Second operand 6 states. [2020-08-18 19:22:09,909 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:22:11,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:22:11,533 INFO L93 Difference]: Finished difference Result 1441 states and 1939 transitions. [2020-08-18 19:22:11,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 19:22:11,538 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-18 19:22:11,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:22:11,549 INFO L225 Difference]: With dead ends: 1441 [2020-08-18 19:22:11,549 INFO L226 Difference]: Without dead ends: 885 [2020-08-18 19:22:11,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:22:11,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-08-18 19:22:11,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 822. [2020-08-18 19:22:11,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2020-08-18 19:22:11,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1040 transitions. [2020-08-18 19:22:11,769 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1040 transitions. Word has length 61 [2020-08-18 19:22:11,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:22:11,769 INFO L479 AbstractCegarLoop]: Abstraction has 822 states and 1040 transitions. [2020-08-18 19:22:11,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 19:22:11,770 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1040 transitions. [2020-08-18 19:22:11,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 19:22:11,774 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:22:11,774 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:22:11,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 19:22:11,775 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:22:11,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:22:11,775 INFO L82 PathProgramCache]: Analyzing trace with hash -2005608044, now seen corresponding path program 1 times [2020-08-18 19:22:11,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:22:11,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536009215] [2020-08-18 19:22:11,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:22:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:12,172 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:22:12,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:22:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:12,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:22:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:12,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:22:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:12,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:22:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:12,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:22:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:12,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 19:22:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:12,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:22:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:12,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 19:22:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:12,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:12,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:22:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:12,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 19:22:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:12,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 19:22:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:12,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 19:22:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:12,328 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 19:22:12,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536009215] [2020-08-18 19:22:12,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:22:12,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 19:22:12,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159488732] [2020-08-18 19:22:12,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 19:22:12,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:22:12,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 19:22:12,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:22:12,330 INFO L87 Difference]: Start difference. First operand 822 states and 1040 transitions. Second operand 10 states. [2020-08-18 19:22:12,938 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-18 19:22:13,505 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:22:15,098 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:22:16,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:22:16,274 INFO L93 Difference]: Finished difference Result 1577 states and 2071 transitions. [2020-08-18 19:22:16,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 19:22:16,275 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 19:22:16,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:22:16,283 INFO L225 Difference]: With dead ends: 1577 [2020-08-18 19:22:16,283 INFO L226 Difference]: Without dead ends: 1008 [2020-08-18 19:22:16,286 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 19:22:16,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2020-08-18 19:22:16,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 929. [2020-08-18 19:22:16,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-08-18 19:22:16,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1152 transitions. [2020-08-18 19:22:16,484 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1152 transitions. Word has length 88 [2020-08-18 19:22:16,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:22:16,487 INFO L479 AbstractCegarLoop]: Abstraction has 929 states and 1152 transitions. [2020-08-18 19:22:16,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 19:22:16,487 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1152 transitions. [2020-08-18 19:22:16,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-18 19:22:16,492 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:22:16,492 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:22:16,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 19:22:16,492 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:22:16,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:22:16,493 INFO L82 PathProgramCache]: Analyzing trace with hash -248690710, now seen corresponding path program 1 times [2020-08-18 19:22:16,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:22:16,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439681580] [2020-08-18 19:22:16,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:22:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:16,786 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:22:16,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:22:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:16,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:22:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:16,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:22:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:16,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:22:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:16,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:22:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:16,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:22:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:16,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:16,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:16,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:22:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:16,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:22:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:16,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 19:22:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:16,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:22:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:16,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 19:22:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:16,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 19:22:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:16,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:16,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 19:22:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:16,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 19:22:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:16,972 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 19:22:16,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439681580] [2020-08-18 19:22:16,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:22:16,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 19:22:16,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685502252] [2020-08-18 19:22:16,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 19:22:16,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:22:16,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 19:22:16,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:22:16,979 INFO L87 Difference]: Start difference. First operand 929 states and 1152 transitions. Second operand 12 states. [2020-08-18 19:22:17,719 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:22:17,992 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:22:18,242 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:22:18,865 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:22:19,130 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:22:19,363 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:22:20,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:22:20,412 INFO L93 Difference]: Finished difference Result 1933 states and 2512 transitions. [2020-08-18 19:22:20,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:22:20,413 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-18 19:22:20,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:22:20,422 INFO L225 Difference]: With dead ends: 1933 [2020-08-18 19:22:20,422 INFO L226 Difference]: Without dead ends: 1028 [2020-08-18 19:22:20,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 19:22:20,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2020-08-18 19:22:20,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 929. [2020-08-18 19:22:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-08-18 19:22:20,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1148 transitions. [2020-08-18 19:22:20,610 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1148 transitions. Word has length 109 [2020-08-18 19:22:20,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:22:20,612 INFO L479 AbstractCegarLoop]: Abstraction has 929 states and 1148 transitions. [2020-08-18 19:22:20,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 19:22:20,612 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1148 transitions. [2020-08-18 19:22:20,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-18 19:22:20,615 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:22:20,615 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:22:20,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 19:22:20,616 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:22:20,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:22:20,616 INFO L82 PathProgramCache]: Analyzing trace with hash 168705896, now seen corresponding path program 1 times [2020-08-18 19:22:20,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:22:20,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202274216] [2020-08-18 19:22:20,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:22:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:20,869 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:22:20,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:22:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:20,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:22:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:20,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:22:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:20,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:22:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:20,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:22:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:20,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:22:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:20,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:20,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:20,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:22:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:20,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:22:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:20,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 19:22:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:20,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:22:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:20,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 19:22:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:20,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 19:22:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:20,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:21,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 19:22:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:21,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 19:22:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:21,018 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 19:22:21,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202274216] [2020-08-18 19:22:21,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:22:21,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 19:22:21,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348937613] [2020-08-18 19:22:21,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 19:22:21,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:22:21,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 19:22:21,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:22:21,021 INFO L87 Difference]: Start difference. First operand 929 states and 1148 transitions. Second operand 10 states. [2020-08-18 19:22:22,110 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:22:22,370 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:22:22,621 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:22:22,863 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:22:23,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:22:23,646 INFO L93 Difference]: Finished difference Result 1757 states and 2231 transitions. [2020-08-18 19:22:23,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 19:22:23,647 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 109 [2020-08-18 19:22:23,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:22:23,653 INFO L225 Difference]: With dead ends: 1757 [2020-08-18 19:22:23,653 INFO L226 Difference]: Without dead ends: 852 [2020-08-18 19:22:23,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:22:23,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-08-18 19:22:23,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 802. [2020-08-18 19:22:23,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 802 states. [2020-08-18 19:22:23,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 973 transitions. [2020-08-18 19:22:23,836 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 973 transitions. Word has length 109 [2020-08-18 19:22:23,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:22:23,837 INFO L479 AbstractCegarLoop]: Abstraction has 802 states and 973 transitions. [2020-08-18 19:22:23,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 19:22:23,837 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 973 transitions. [2020-08-18 19:22:23,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-18 19:22:23,840 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:22:23,840 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:22:23,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 19:22:23,841 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:22:23,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:22:23,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1129880655, now seen corresponding path program 1 times [2020-08-18 19:22:23,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:22:23,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846123278] [2020-08-18 19:22:23,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:22:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:24,159 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:22:24,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:22:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:24,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:22:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:24,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:22:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:24,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:22:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:24,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:22:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:24,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 19:22:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:24,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:22:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:24,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:24,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:24,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:22:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:24,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:22:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:24,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 19:22:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:24,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:22:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:24,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 19:22:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:24,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 19:22:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:24,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:24,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 19:22:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:24,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 19:22:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:24,348 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:22:24,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846123278] [2020-08-18 19:22:24,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:22:24,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 19:22:24,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080665272] [2020-08-18 19:22:24,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 19:22:24,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:22:24,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 19:22:24,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:22:24,350 INFO L87 Difference]: Start difference. First operand 802 states and 973 transitions. Second operand 12 states. [2020-08-18 19:22:24,867 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:22:25,890 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:22:26,155 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:22:26,380 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:22:26,643 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:22:26,892 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:22:27,225 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:22:27,749 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:22:28,038 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:22:28,268 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:22:29,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:22:29,695 INFO L93 Difference]: Finished difference Result 1952 states and 2520 transitions. [2020-08-18 19:22:29,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 19:22:29,696 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 113 [2020-08-18 19:22:29,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:22:29,705 INFO L225 Difference]: With dead ends: 1952 [2020-08-18 19:22:29,705 INFO L226 Difference]: Without dead ends: 1319 [2020-08-18 19:22:29,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-08-18 19:22:29,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2020-08-18 19:22:29,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1155. [2020-08-18 19:22:29,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2020-08-18 19:22:29,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1419 transitions. [2020-08-18 19:22:29,923 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1419 transitions. Word has length 113 [2020-08-18 19:22:29,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:22:29,925 INFO L479 AbstractCegarLoop]: Abstraction has 1155 states and 1419 transitions. [2020-08-18 19:22:29,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 19:22:29,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1419 transitions. [2020-08-18 19:22:29,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-18 19:22:29,930 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:22:29,931 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:22:29,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 19:22:29,931 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:22:29,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:22:29,931 INFO L82 PathProgramCache]: Analyzing trace with hash -2054287532, now seen corresponding path program 1 times [2020-08-18 19:22:29,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:22:29,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414523339] [2020-08-18 19:22:29,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:22:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:30,248 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:22:30,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:22:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:30,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:22:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:30,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:22:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:30,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:22:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:30,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:22:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:30,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 19:22:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:30,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:22:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:30,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:30,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:30,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:22:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:30,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:22:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:30,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 19:22:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:30,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:22:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:30,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 19:22:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:30,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:22:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:30,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:22:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:30,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:30,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:22:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:30,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:22:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:30,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-18 19:22:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:30,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 19:22:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:30,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 19:22:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:30,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-18 19:22:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:30,490 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 34 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-08-18 19:22:30,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414523339] [2020-08-18 19:22:30,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:22:30,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 19:22:30,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744436205] [2020-08-18 19:22:30,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 19:22:30,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:22:30,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 19:22:30,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-18 19:22:30,495 INFO L87 Difference]: Start difference. First operand 1155 states and 1419 transitions. Second operand 13 states. [2020-08-18 19:22:31,314 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:22:31,543 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:22:31,776 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:22:32,227 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:22:33,054 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:22:34,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:22:34,131 INFO L93 Difference]: Finished difference Result 1952 states and 2448 transitions. [2020-08-18 19:22:34,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-18 19:22:34,132 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 146 [2020-08-18 19:22:34,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:22:34,138 INFO L225 Difference]: With dead ends: 1952 [2020-08-18 19:22:34,139 INFO L226 Difference]: Without dead ends: 1017 [2020-08-18 19:22:34,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2020-08-18 19:22:34,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2020-08-18 19:22:34,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 739. [2020-08-18 19:22:34,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-08-18 19:22:34,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 854 transitions. [2020-08-18 19:22:34,298 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 854 transitions. Word has length 146 [2020-08-18 19:22:34,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:22:34,298 INFO L479 AbstractCegarLoop]: Abstraction has 739 states and 854 transitions. [2020-08-18 19:22:34,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 19:22:34,298 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 854 transitions. [2020-08-18 19:22:34,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 19:22:34,301 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:22:34,301 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:22:34,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 19:22:34,302 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:22:34,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:22:34,302 INFO L82 PathProgramCache]: Analyzing trace with hash -793208668, now seen corresponding path program 2 times [2020-08-18 19:22:34,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:22:34,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905999861] [2020-08-18 19:22:34,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:22:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,618 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:22:34,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:22:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:22:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:22:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:22:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:22:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 19:22:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:22:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:22:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:22:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 19:22:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:22:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 19:22:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:22:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:22:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:22:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:22:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-18 19:22:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 19:22:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-18 19:22:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:22:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-18 19:22:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-18 19:22:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:22:34,836 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 37 proven. 18 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-18 19:22:34,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905999861] [2020-08-18 19:22:34,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:22:34,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 19:22:34,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335016094] [2020-08-18 19:22:34,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 19:22:34,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:22:34,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 19:22:34,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:22:34,839 INFO L87 Difference]: Start difference. First operand 739 states and 854 transitions. Second operand 14 states. [2020-08-18 19:22:35,268 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:22:35,924 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:22:36,464 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:22:36,746 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:22:36,991 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:22:37,254 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:22:37,550 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:22:37,799 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:22:39,109 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:22:39,376 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:22:40,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:22:40,249 INFO L93 Difference]: Finished difference Result 1618 states and 2050 transitions. [2020-08-18 19:22:40,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 19:22:40,249 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 152 [2020-08-18 19:22:40,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:22:40,257 INFO L225 Difference]: With dead ends: 1618 [2020-08-18 19:22:40,257 INFO L226 Difference]: Without dead ends: 1125 [2020-08-18 19:22:40,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2020-08-18 19:22:40,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-08-18 19:22:40,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 728. [2020-08-18 19:22:40,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2020-08-18 19:22:40,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 848 transitions. [2020-08-18 19:22:40,424 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 848 transitions. Word has length 152 [2020-08-18 19:22:40,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:22:40,427 INFO L479 AbstractCegarLoop]: Abstraction has 728 states and 848 transitions. [2020-08-18 19:22:40,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 19:22:40,427 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 848 transitions. [2020-08-18 19:22:40,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-18 19:22:40,431 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:22:40,431 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-18 19:22:40,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 19:22:40,432 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:22:40,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:22:40,433 INFO L82 PathProgramCache]: Analyzing trace with hash -127576802, now seen corresponding path program 3 times [2020-08-18 19:22:40,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:22:40,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584359268] [2020-08-18 19:22:40,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:22:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 19:22:40,545 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 19:22:40,545 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 19:22:40,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 19:22:40,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 07:22:40 BoogieIcfgContainer [2020-08-18 19:22:40,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 19:22:40,600 INFO L168 Benchmark]: Toolchain (without parser) took 47738.52 ms. Allocated memory was 141.0 MB in the beginning and 741.9 MB in the end (delta: 600.8 MB). Free memory was 101.2 MB in the beginning and 690.9 MB in the end (delta: -589.7 MB). Peak memory consumption was 619.1 MB. Max. memory is 7.1 GB. [2020-08-18 19:22:40,600 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 19:22:40,602 INFO L168 Benchmark]: CACSL2BoogieTranslator took 619.02 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 101.0 MB in the beginning and 171.8 MB in the end (delta: -70.8 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-08-18 19:22:40,603 INFO L168 Benchmark]: Boogie Preprocessor took 111.52 ms. Allocated memory is still 203.9 MB. Free memory was 171.8 MB in the beginning and 168.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-08-18 19:22:40,606 INFO L168 Benchmark]: RCFGBuilder took 1194.26 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 168.0 MB in the beginning and 195.3 MB in the end (delta: -27.3 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. [2020-08-18 19:22:40,611 INFO L168 Benchmark]: TraceAbstraction took 45808.95 ms. Allocated memory was 235.4 MB in the beginning and 741.9 MB in the end (delta: 506.5 MB). Free memory was 195.3 MB in the beginning and 690.9 MB in the end (delta: -495.6 MB). Peak memory consumption was 618.8 MB. Max. memory is 7.1 GB. [2020-08-18 19:22:40,615 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 619.02 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 101.0 MB in the beginning and 171.8 MB in the end (delta: -70.8 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.52 ms. Allocated memory is still 203.9 MB. Free memory was 171.8 MB in the beginning and 168.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1194.26 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 168.0 MB in the beginning and 195.3 MB in the end (delta: -27.3 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 45808.95 ms. Allocated memory was 235.4 MB in the beginning and 741.9 MB in the end (delta: 506.5 MB). Free memory was 195.3 MB in the beginning and 690.9 MB in the end (delta: -495.6 MB). Peak memory consumption was 618.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 784]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L148] int pumpRunning = 0; [L149] int systemActive = 1; [L315] int cleanupTimeShifts = 4; [L583] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L824] int waterLevel = 1; [L825] int methaneLevelCritical = 0; [L391] int retValue_acc ; [L392] int tmp ; [L396] FCALL select_helpers() [L397] FCALL select_features() [L398] CALL, EXPR valid_product() [L815] int retValue_acc ; [L818] retValue_acc = 1 [L819] return (retValue_acc); [L398] RET, EXPR valid_product() [L398] tmp = valid_product() [L400] COND TRUE \read(tmp) [L402] FCALL setup() [L403] CALL runTest() [L382] CALL test() [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) [L67] CALL waterRise() [L842] COND TRUE waterLevel < 2 [L843] waterLevel = waterLevel + 1 [L67] RET waterRise() [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L155] COND FALSE !(\read(pumpRunning)) [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND TRUE ! pumpRunning [L189] CALL, EXPR isHighWaterLevel() [L281] int retValue_acc ; [L282] int tmp ; [L283] int tmp___0 ; [L287] CALL, EXPR isHighWaterSensorDry() [L904] int retValue_acc ; [L907] COND FALSE !(waterLevel < 2) [L911] retValue_acc = 0 [L912] return (retValue_acc); [L287] RET, EXPR isHighWaterSensorDry() [L287] tmp = isHighWaterSensorDry() [L289] COND FALSE !(\read(tmp)) [L292] tmp___0 = 1 [L294] retValue_acc = tmp___0 [L295] return (retValue_acc); [L189] RET, EXPR isHighWaterLevel() [L189] tmp = isHighWaterLevel() [L191] COND TRUE \read(tmp) [L193] CALL activatePump() [L212] pumpRunning = 1 [L193] RET activatePump() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification4_spec__1() [L116] int tmp ; [L117] int tmp___0 ; [L121] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); [L121] RET, EXPR getWaterLevel() [L121] tmp = getWaterLevel() [L123] COND FALSE !(tmp == 0) [L170] RET __utac_acc__Specification4_spec__1() [L100] RET timeShift() [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND FALSE !(\read(tmp)) [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L155] COND TRUE \read(pumpRunning) [L157] CALL lowerWaterLevel() [L830] COND TRUE waterLevel > 0 [L831] waterLevel = waterLevel - 1 [L157] RET lowerWaterLevel() [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND FALSE !(! pumpRunning) [L202] FCALL processEnvironment__wrappee__base() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification4_spec__1() [L116] int tmp ; [L117] int tmp___0 ; [L121] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); [L121] RET, EXPR getWaterLevel() [L121] tmp = getWaterLevel() [L123] COND FALSE !(tmp == 0) [L170] RET __utac_acc__Specification4_spec__1() [L100] RET timeShift() [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND FALSE !(\read(tmp)) [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L155] COND TRUE \read(pumpRunning) [L157] CALL lowerWaterLevel() [L830] COND TRUE waterLevel > 0 [L831] waterLevel = waterLevel - 1 [L157] RET lowerWaterLevel() [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND FALSE !(! pumpRunning) [L202] FCALL processEnvironment__wrappee__base() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification4_spec__1() [L116] int tmp ; [L117] int tmp___0 ; [L121] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); [L121] RET, EXPR getWaterLevel() [L121] tmp = getWaterLevel() [L123] COND TRUE tmp == 0 [L125] CALL, EXPR isPumpRunning() [L236] int retValue_acc ; [L239] retValue_acc = pumpRunning [L240] return (retValue_acc); [L125] RET, EXPR isPumpRunning() [L125] tmp___0 = isPumpRunning() [L127] COND TRUE \read(tmp___0) [L129] CALL __automaton_fail() [L784] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 221 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 45.6s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 38.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1298 SDtfs, 3708 SDslu, 1934 SDs, 0 SdLazy, 8908 SolverSat, 2696 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 541 GetRequests, 343 SyntacticMatches, 11 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 17.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1155occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 1342 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 1127 NumberOfCodeBlocks, 1127 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 968 ConstructedInterpolants, 0 QuantifiedInterpolants, 365007 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 214/252 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...