/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:20:50,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:20:50,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:20:50,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:20:50,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:20:50,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:20:50,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:20:50,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:20:50,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:20:50,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:20:50,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:20:50,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:20:50,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:20:50,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:20:50,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:20:50,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:20:50,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:20:50,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:20:50,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:20:50,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:20:50,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:20:50,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:20:50,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:20:50,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:20:50,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:20:50,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:20:50,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:20:50,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:20:50,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:20:50,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:20:50,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:20:50,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:20:50,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:20:50,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:20:50,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:20:50,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:20:50,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:20:50,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:20:50,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:20:50,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:20:50,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:20:50,497 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 10:20:50,540 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:20:50,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:20:50,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:20:50,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:20:50,542 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:20:50,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:20:50,543 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:20:50,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:20:50,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:20:50,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:20:50,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:20:50,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:20:50,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:20:50,546 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:20:50,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:20:50,547 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:20:50,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:20:50,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:20:50,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:20:50,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:20:50,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:20:50,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:20:50,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:20:50,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:20:50,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:20:50,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:20:50,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:20:50,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:20:50,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:20:50,550 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 -> false [2020-08-18 10:20:50,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:20:50,876 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:20:50,879 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:20:50,885 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:20:50,885 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:20:50,886 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product54.cil.c [2020-08-18 10:20:50,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0af88d0e4/971c6729e23c43c58327f266c7bcdc4a/FLAG3e84c6c0c [2020-08-18 10:20:51,492 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:20:51,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product54.cil.c [2020-08-18 10:20:51,507 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0af88d0e4/971c6729e23c43c58327f266c7bcdc4a/FLAG3e84c6c0c [2020-08-18 10:20:51,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0af88d0e4/971c6729e23c43c58327f266c7bcdc4a [2020-08-18 10:20:51,871 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:20:51,872 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:20:51,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:20:51,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:20:51,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:20:51,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:20:51" (1/1) ... [2020-08-18 10:20:51,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424fcf25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:51, skipping insertion in model container [2020-08-18 10:20:51,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:20:51" (1/1) ... [2020-08-18 10:20:51,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:20:51,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:20:52,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:20:52,391 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:20:52,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:20:52,585 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:20:52,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:52 WrapperNode [2020-08-18 10:20:52,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:20:52,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:20:52,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:20:52,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:20:52,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:52" (1/1) ... [2020-08-18 10:20:52,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:52" (1/1) ... [2020-08-18 10:20:52,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:52" (1/1) ... [2020-08-18 10:20:52,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:52" (1/1) ... [2020-08-18 10:20:52,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:52" (1/1) ... [2020-08-18 10:20:52,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:52" (1/1) ... [2020-08-18 10:20:52,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:52" (1/1) ... [2020-08-18 10:20:52,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:20:52,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:20:52,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:20:52,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:20:52,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:52" (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 10:20:52,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:20:52,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:20:52,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:20:52,754 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:20:52,754 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:20:52,754 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:20:52,754 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:20:52,754 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:20:52,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 10:20:52,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 10:20:52,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:20:52,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:20:52,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:20:52,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:20:52,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:20:52,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:20:52,756 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:20:52,756 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:20:52,756 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 10:20:52,756 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:20:52,757 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 10:20:52,757 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:20:52,757 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:20:52,757 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:20:52,757 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:20:52,758 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:20:52,758 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:20:52,758 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 10:20:52,758 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 10:20:52,758 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 10:20:52,758 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:20:52,759 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:20:52,759 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:20:52,759 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:20:52,759 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:20:52,759 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:20:52,760 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 10:20:52,760 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 10:20:52,760 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:20:52,760 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:20:52,760 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:20:52,760 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:20:52,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:20:52,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:20:52,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:20:52,761 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:20:52,761 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:20:52,762 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:20:52,762 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:20:52,762 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:20:52,762 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:20:52,762 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:20:52,762 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:20:52,762 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 10:20:52,763 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:20:52,763 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:20:52,763 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:20:52,763 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:20:52,763 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:20:52,763 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:20:52,764 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:20:52,764 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:20:52,764 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:20:52,764 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 10:20:52,764 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:20:52,764 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:20:52,773 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:20:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:20:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:20:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:20:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:20:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:20:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:20:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:20:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:20:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:20:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:20:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:20:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:20:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:20:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:20:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 10:20:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:20:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:20:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 10:20:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 10:20:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:20:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:20:52,778 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:20:52,778 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 10:20:52,778 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 10:20:52,778 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:20:52,778 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 10:20:52,778 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 10:20:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:20:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:20:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:20:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:20:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:20:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:20:53,957 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:20:53,958 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:20:53,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:20:53 BoogieIcfgContainer [2020-08-18 10:20:53,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:20:53,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:20:53,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:20:53,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:20:53,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:20:51" (1/3) ... [2020-08-18 10:20:53,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a0047a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:20:53, skipping insertion in model container [2020-08-18 10:20:53,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:52" (2/3) ... [2020-08-18 10:20:53,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a0047a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:20:53, skipping insertion in model container [2020-08-18 10:20:53,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:20:53" (3/3) ... [2020-08-18 10:20:53,972 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product54.cil.c [2020-08-18 10:20:53,981 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:20:53,989 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:20:54,002 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:20:54,025 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:20:54,026 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:20:54,026 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:20:54,026 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:20:54,026 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:20:54,026 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:20:54,026 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:20:54,027 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:20:54,049 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states. [2020-08-18 10:20:54,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 10:20:54,060 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:20:54,061 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 10:20:54,062 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:20:54,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:20:54,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1445624956, now seen corresponding path program 1 times [2020-08-18 10:20:54,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:20:54,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737518927] [2020-08-18 10:20:54,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:20:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:54,746 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:20:54,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:20:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:54,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:20:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:54,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:20:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:54,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:20:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:54,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:20:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:54,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:20:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:54,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:20:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:54,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 10:20:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:54,904 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 10:20:54,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737518927] [2020-08-18 10:20:54,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:20:54,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:20:54,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224058010] [2020-08-18 10:20:54,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:20:54,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:20:54,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:20:54,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:20:54,953 INFO L87 Difference]: Start difference. First operand 195 states. Second operand 4 states. [2020-08-18 10:20:56,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:20:56,272 INFO L93 Difference]: Finished difference Result 338 states and 440 transitions. [2020-08-18 10:20:56,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 10:20:56,274 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 10:20:56,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:20:56,290 INFO L225 Difference]: With dead ends: 338 [2020-08-18 10:20:56,290 INFO L226 Difference]: Without dead ends: 187 [2020-08-18 10:20:56,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:20:56,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-08-18 10:20:56,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 152. [2020-08-18 10:20:56,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-08-18 10:20:56,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 180 transitions. [2020-08-18 10:20:56,401 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 180 transitions. Word has length 51 [2020-08-18 10:20:56,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:20:56,402 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 180 transitions. [2020-08-18 10:20:56,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:20:56,402 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 180 transitions. [2020-08-18 10:20:56,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 10:20:56,414 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:20:56,414 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] [2020-08-18 10:20:56,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:20:56,415 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:20:56,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:20:56,415 INFO L82 PathProgramCache]: Analyzing trace with hash 313505704, now seen corresponding path program 1 times [2020-08-18 10:20:56,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:20:56,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725508731] [2020-08-18 10:20:56,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:20:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:56,797 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:20:56,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:20:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:56,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:20:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:56,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:20:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:56,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:20:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:56,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:20:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:56,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:20:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:56,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:20:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:56,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 10:20:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:56,851 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 10:20:56,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725508731] [2020-08-18 10:20:56,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:20:56,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 10:20:56,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21942098] [2020-08-18 10:20:56,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 10:20:56,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:20:56,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 10:20:56,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 10:20:56,855 INFO L87 Difference]: Start difference. First operand 152 states and 180 transitions. Second operand 5 states. [2020-08-18 10:20:57,338 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:20:58,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:20:58,477 INFO L93 Difference]: Finished difference Result 279 states and 347 transitions. [2020-08-18 10:20:58,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 10:20:58,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 10:20:58,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:20:58,481 INFO L225 Difference]: With dead ends: 279 [2020-08-18 10:20:58,482 INFO L226 Difference]: Without dead ends: 177 [2020-08-18 10:20:58,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 10:20:58,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-18 10:20:58,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 143. [2020-08-18 10:20:58,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-18 10:20:58,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2020-08-18 10:20:58,533 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 52 [2020-08-18 10:20:58,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:20:58,533 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2020-08-18 10:20:58,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 10:20:58,534 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2020-08-18 10:20:58,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 10:20:58,535 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:20:58,536 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 10:20:58,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:20:58,536 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:20:58,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:20:58,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1935207340, now seen corresponding path program 1 times [2020-08-18 10:20:58,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:20:58,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627390744] [2020-08-18 10:20:58,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:20:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:58,860 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:20:58,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:20:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:58,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:20:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:58,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:20:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:58,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:20:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:58,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:20:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:58,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:20:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:58,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 10:20:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:58,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 10:20:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:58,967 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 10:20:58,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627390744] [2020-08-18 10:20:58,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:20:58,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:20:58,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397918902] [2020-08-18 10:20:58,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:20:58,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:20:58,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:20:58,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:20:58,978 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand 9 states. [2020-08-18 10:20:59,341 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:20:59,654 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:20:59,911 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:00,139 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:01,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:01,590 INFO L93 Difference]: Finished difference Result 292 states and 366 transitions. [2020-08-18 10:21:01,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 10:21:01,593 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-18 10:21:01,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:01,596 INFO L225 Difference]: With dead ends: 292 [2020-08-18 10:21:01,596 INFO L226 Difference]: Without dead ends: 177 [2020-08-18 10:21:01,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:21:01,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-18 10:21:01,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 143. [2020-08-18 10:21:01,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-18 10:21:01,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 167 transitions. [2020-08-18 10:21:01,637 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 167 transitions. Word has length 57 [2020-08-18 10:21:01,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:01,638 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 167 transitions. [2020-08-18 10:21:01,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:21:01,638 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 167 transitions. [2020-08-18 10:21:01,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 10:21:01,640 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:01,640 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:21:01,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:21:01,640 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:01,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:01,641 INFO L82 PathProgramCache]: Analyzing trace with hash 979214064, now seen corresponding path program 1 times [2020-08-18 10:21:01,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:01,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084593750] [2020-08-18 10:21:01,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:01,983 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:01,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:02,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:02,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:02,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:02,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:02,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:21:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:02,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:21:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:02,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:02,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:02,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:02,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 10:21:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:02,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 10:21:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:02,077 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 10:21:02,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084593750] [2020-08-18 10:21:02,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:02,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 10:21:02,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57562035] [2020-08-18 10:21:02,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 10:21:02,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:02,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 10:21:02,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 10:21:02,080 INFO L87 Difference]: Start difference. First operand 143 states and 167 transitions. Second operand 7 states. [2020-08-18 10:21:02,457 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:03,693 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:04,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:04,515 INFO L93 Difference]: Finished difference Result 397 states and 501 transitions. [2020-08-18 10:21:04,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 10:21:04,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2020-08-18 10:21:04,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:04,519 INFO L225 Difference]: With dead ends: 397 [2020-08-18 10:21:04,519 INFO L226 Difference]: Without dead ends: 282 [2020-08-18 10:21:04,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 10:21:04,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-18 10:21:04,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 233. [2020-08-18 10:21:04,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-18 10:21:04,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 266 transitions. [2020-08-18 10:21:04,574 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 266 transitions. Word has length 75 [2020-08-18 10:21:04,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:04,575 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 266 transitions. [2020-08-18 10:21:04,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 10:21:04,575 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 266 transitions. [2020-08-18 10:21:04,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 10:21:04,576 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:04,577 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, 1, 1, 1, 1, 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 10:21:04,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:21:04,577 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:04,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:04,577 INFO L82 PathProgramCache]: Analyzing trace with hash -919866488, now seen corresponding path program 1 times [2020-08-18 10:21:04,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:04,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465171160] [2020-08-18 10:21:04,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:04,902 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:04,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:04,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:04,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:04,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:04,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:04,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:21:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:04,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:21:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:04,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:04,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:04,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:04,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:04,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:21:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:05,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 10:21:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:05,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 10:21:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:05,030 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 10:21:05,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465171160] [2020-08-18 10:21:05,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:05,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:21:05,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129728914] [2020-08-18 10:21:05,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:21:05,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:05,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:21:05,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:21:05,033 INFO L87 Difference]: Start difference. First operand 233 states and 266 transitions. Second operand 9 states. [2020-08-18 10:21:05,377 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:06,685 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:06,950 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:07,175 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:07,396 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:08,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:08,822 INFO L93 Difference]: Finished difference Result 695 states and 864 transitions. [2020-08-18 10:21:08,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 10:21:08,823 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-08-18 10:21:08,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:08,828 INFO L225 Difference]: With dead ends: 695 [2020-08-18 10:21:08,828 INFO L226 Difference]: Without dead ends: 490 [2020-08-18 10:21:08,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 10:21:08,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-08-18 10:21:08,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 414. [2020-08-18 10:21:08,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-08-18 10:21:08,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 472 transitions. [2020-08-18 10:21:08,913 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 472 transitions. Word has length 89 [2020-08-18 10:21:08,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:08,914 INFO L479 AbstractCegarLoop]: Abstraction has 414 states and 472 transitions. [2020-08-18 10:21:08,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:21:08,914 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 472 transitions. [2020-08-18 10:21:08,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 10:21:08,916 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:08,916 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:08,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:21:08,916 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:08,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:08,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1008826772, now seen corresponding path program 1 times [2020-08-18 10:21:08,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:08,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080506712] [2020-08-18 10:21:08,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:09,198 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:09,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:09,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:09,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:09,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:09,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:09,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:21:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:09,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 10:21:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:09,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:21:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:09,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:09,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:09,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:09,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:09,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:21:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:09,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 10:21:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:09,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 10:21:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:09,414 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 10:21:09,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080506712] [2020-08-18 10:21:09,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:09,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 10:21:09,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064520220] [2020-08-18 10:21:09,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:21:09,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:09,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:21:09,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:21:09,419 INFO L87 Difference]: Start difference. First operand 414 states and 472 transitions. Second operand 10 states. [2020-08-18 10:21:09,852 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:11,045 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:11,290 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:11,543 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:11,821 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:13,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:13,144 INFO L93 Difference]: Finished difference Result 914 states and 1119 transitions. [2020-08-18 10:21:13,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 10:21:13,145 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-18 10:21:13,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:13,152 INFO L225 Difference]: With dead ends: 914 [2020-08-18 10:21:13,152 INFO L226 Difference]: Without dead ends: 528 [2020-08-18 10:21:13,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-18 10:21:13,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2020-08-18 10:21:13,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 413. [2020-08-18 10:21:13,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2020-08-18 10:21:13,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 469 transitions. [2020-08-18 10:21:13,331 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 469 transitions. Word has length 93 [2020-08-18 10:21:13,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:13,334 INFO L479 AbstractCegarLoop]: Abstraction has 413 states and 469 transitions. [2020-08-18 10:21:13,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:21:13,334 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 469 transitions. [2020-08-18 10:21:13,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 10:21:13,339 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:13,339 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:13,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:21:13,340 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:13,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:13,340 INFO L82 PathProgramCache]: Analyzing trace with hash 390870795, now seen corresponding path program 1 times [2020-08-18 10:21:13,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:13,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17235900] [2020-08-18 10:21:13,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:13,638 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:13,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:13,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:13,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:13,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:13,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:13,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:21:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:13,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 10:21:13,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:13,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:21:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:13,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:13,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:13,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:13,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:13,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:21:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:13,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 10:21:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:13,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 10:21:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:13,808 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 10:21:13,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17235900] [2020-08-18 10:21:13,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:13,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 10:21:13,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32933238] [2020-08-18 10:21:13,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:21:13,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:13,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:21:13,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:21:13,816 INFO L87 Difference]: Start difference. First operand 413 states and 469 transitions. Second operand 10 states. [2020-08-18 10:21:14,796 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:15,048 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 10:21:15,313 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:15,556 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:16,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:16,895 INFO L93 Difference]: Finished difference Result 917 states and 1130 transitions. [2020-08-18 10:21:16,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 10:21:16,896 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-08-18 10:21:16,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:16,899 INFO L225 Difference]: With dead ends: 917 [2020-08-18 10:21:16,899 INFO L226 Difference]: Without dead ends: 532 [2020-08-18 10:21:16,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 10:21:16,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-08-18 10:21:16,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 423. [2020-08-18 10:21:16,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-08-18 10:21:16,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 479 transitions. [2020-08-18 10:21:16,998 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 479 transitions. Word has length 94 [2020-08-18 10:21:16,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:16,998 INFO L479 AbstractCegarLoop]: Abstraction has 423 states and 479 transitions. [2020-08-18 10:21:16,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:21:16,998 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 479 transitions. [2020-08-18 10:21:17,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 10:21:17,000 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:17,000 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:17,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 10:21:17,001 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:17,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:17,001 INFO L82 PathProgramCache]: Analyzing trace with hash 318484237, now seen corresponding path program 1 times [2020-08-18 10:21:17,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:17,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407932645] [2020-08-18 10:21:17,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:17,288 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:17,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:17,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:17,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:17,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:17,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:17,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:21:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:17,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 10:21:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:17,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:21:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:17,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:17,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:17,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:17,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:17,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:17,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:21:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:17,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 10:21:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:17,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 10:21:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:17,462 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 10:21:17,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407932645] [2020-08-18 10:21:17,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:17,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 10:21:17,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594596592] [2020-08-18 10:21:17,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:21:17,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:17,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:21:17,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:21:17,465 INFO L87 Difference]: Start difference. First operand 423 states and 479 transitions. Second operand 12 states. [2020-08-18 10:21:17,945 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:18,181 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:18,407 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:19,100 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:19,353 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:19,590 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:21,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:21,043 INFO L93 Difference]: Finished difference Result 941 states and 1174 transitions. [2020-08-18 10:21:21,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 10:21:21,044 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-18 10:21:21,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:21,048 INFO L225 Difference]: With dead ends: 941 [2020-08-18 10:21:21,048 INFO L226 Difference]: Without dead ends: 546 [2020-08-18 10:21:21,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 10:21:21,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2020-08-18 10:21:21,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 431. [2020-08-18 10:21:21,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-08-18 10:21:21,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 487 transitions. [2020-08-18 10:21:21,140 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 487 transitions. Word has length 94 [2020-08-18 10:21:21,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:21,141 INFO L479 AbstractCegarLoop]: Abstraction has 431 states and 487 transitions. [2020-08-18 10:21:21,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:21:21,141 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 487 transitions. [2020-08-18 10:21:21,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 10:21:21,142 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:21,143 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:21,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 10:21:21,143 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:21,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:21,143 INFO L82 PathProgramCache]: Analyzing trace with hash 648249998, now seen corresponding path program 1 times [2020-08-18 10:21:21,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:21,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909213757] [2020-08-18 10:21:21,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,403 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:21,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:21:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 10:21:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:21:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:21:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 10:21:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 10:21:21,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:21,569 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 10:21:21,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909213757] [2020-08-18 10:21:21,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:21,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:21:21,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112687385] [2020-08-18 10:21:21,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:21:21,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:21,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:21:21,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:21:21,573 INFO L87 Difference]: Start difference. First operand 431 states and 487 transitions. Second operand 8 states. [2020-08-18 10:21:21,914 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:22,650 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:25,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:25,393 INFO L93 Difference]: Finished difference Result 1309 states and 1687 transitions. [2020-08-18 10:21:25,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 10:21:25,394 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-18 10:21:25,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:25,403 INFO L225 Difference]: With dead ends: 1309 [2020-08-18 10:21:25,403 INFO L226 Difference]: Without dead ends: 906 [2020-08-18 10:21:25,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-18 10:21:25,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2020-08-18 10:21:25,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 761. [2020-08-18 10:21:25,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2020-08-18 10:21:25,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 889 transitions. [2020-08-18 10:21:25,614 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 889 transitions. Word has length 94 [2020-08-18 10:21:25,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:25,614 INFO L479 AbstractCegarLoop]: Abstraction has 761 states and 889 transitions. [2020-08-18 10:21:25,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:21:25,614 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 889 transitions. [2020-08-18 10:21:25,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 10:21:25,618 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:25,618 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:25,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 10:21:25,618 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:25,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:25,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1149612728, now seen corresponding path program 1 times [2020-08-18 10:21:25,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:25,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068472305] [2020-08-18 10:21:25,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:25,987 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:25,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:26,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:26,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:26,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:26,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:26,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:21:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:26,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:21:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:26,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:21:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:26,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 10:21:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:26,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:26,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:26,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:26,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:26,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:21:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:26,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 10:21:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:26,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 10:21:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:26,085 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 10:21:26,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068472305] [2020-08-18 10:21:26,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:26,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:21:26,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741358061] [2020-08-18 10:21:26,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:21:26,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:26,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:21:26,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:21:26,088 INFO L87 Difference]: Start difference. First operand 761 states and 889 transitions. Second operand 8 states. [2020-08-18 10:21:26,467 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:28,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:29,000 INFO L93 Difference]: Finished difference Result 1499 states and 1925 transitions. [2020-08-18 10:21:29,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 10:21:29,000 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-08-18 10:21:29,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:29,010 INFO L225 Difference]: With dead ends: 1499 [2020-08-18 10:21:29,010 INFO L226 Difference]: Without dead ends: 1496 [2020-08-18 10:21:29,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-18 10:21:29,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2020-08-18 10:21:29,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1269. [2020-08-18 10:21:29,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-08-18 10:21:29,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1498 transitions. [2020-08-18 10:21:29,246 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1498 transitions. Word has length 98 [2020-08-18 10:21:29,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:29,247 INFO L479 AbstractCegarLoop]: Abstraction has 1269 states and 1498 transitions. [2020-08-18 10:21:29,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:21:29,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1498 transitions. [2020-08-18 10:21:29,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-18 10:21:29,251 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:29,251 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:21:29,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 10:21:29,252 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:29,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:29,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1054262603, now seen corresponding path program 1 times [2020-08-18 10:21:29,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:29,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274424347] [2020-08-18 10:21:29,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,574 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:29,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:21:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:21:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:21:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 10:21:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:21:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:21:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 10:21:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 10:21:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:21:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-18 10:21:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-18 10:21:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:29,897 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-18 10:21:29,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274424347] [2020-08-18 10:21:29,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:21:29,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 10:21:29,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949020098] [2020-08-18 10:21:29,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 10:21:29,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:29,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 10:21:29,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-18 10:21:29,905 INFO L87 Difference]: Start difference. First operand 1269 states and 1498 transitions. Second operand 13 states. [2020-08-18 10:21:30,717 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:31,023 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:31,233 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:32,317 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:34,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:34,371 INFO L93 Difference]: Finished difference Result 2281 states and 2814 transitions. [2020-08-18 10:21:34,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 10:21:34,372 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 162 [2020-08-18 10:21:34,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:34,380 INFO L225 Difference]: With dead ends: 2281 [2020-08-18 10:21:34,380 INFO L226 Difference]: Without dead ends: 1182 [2020-08-18 10:21:34,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-08-18 10:21:34,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2020-08-18 10:21:34,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1046. [2020-08-18 10:21:34,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-08-18 10:21:34,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1220 transitions. [2020-08-18 10:21:34,620 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1220 transitions. Word has length 162 [2020-08-18 10:21:34,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:34,620 INFO L479 AbstractCegarLoop]: Abstraction has 1046 states and 1220 transitions. [2020-08-18 10:21:34,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 10:21:34,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1220 transitions. [2020-08-18 10:21:34,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-18 10:21:34,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:34,625 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:34,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 10:21:34,625 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:34,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:34,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1747787381, now seen corresponding path program 1 times [2020-08-18 10:21:34,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:34,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922647487] [2020-08-18 10:21:34,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:34,943 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:34,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:34,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:34,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:34,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:34,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:34,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:21:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:21:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:21:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 10:21:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:21:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:21:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 10:21:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 10:21:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 10:21:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:21:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:21:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-18 10:21:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-18 10:21:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:35,337 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-18 10:21:35,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922647487] [2020-08-18 10:21:35,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:21:35,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 10:21:35,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156087334] [2020-08-18 10:21:35,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 10:21:35,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:35,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 10:21:35,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-18 10:21:35,341 INFO L87 Difference]: Start difference. First operand 1046 states and 1220 transitions. Second operand 19 states. [2020-08-18 10:21:35,953 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:36,305 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:21:36,564 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:21:36,806 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:21:37,574 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:38,961 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:39,341 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:40,809 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:41,078 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:41,396 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:41,669 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:41,928 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:42,189 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:42,483 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:42,749 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:44,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:44,176 INFO L93 Difference]: Finished difference Result 2018 states and 2444 transitions. [2020-08-18 10:21:44,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-18 10:21:44,177 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 175 [2020-08-18 10:21:44,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:44,178 INFO L225 Difference]: With dead ends: 2018 [2020-08-18 10:21:44,178 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 10:21:44,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=591, Invalid=2715, Unknown=0, NotChecked=0, Total=3306 [2020-08-18 10:21:44,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 10:21:44,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 10:21:44,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 10:21:44,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 10:21:44,185 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 175 [2020-08-18 10:21:44,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:44,185 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 10:21:44,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 10:21:44,186 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 10:21:44,186 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 10:21:44,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 10:21:44,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 10:21:44,931 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 29 [2020-08-18 10:21:45,395 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 30 [2020-08-18 10:21:45,507 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 30 [2020-08-18 10:21:45,629 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 31 [2020-08-18 10:21:45,957 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 31 [2020-08-18 10:21:48,047 WARN L193 SmtUtils]: Spent 996.00 ms on a formula simplification. DAG size of input: 361 DAG size of output: 317 [2020-08-18 10:21:48,848 WARN L193 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 300