/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:07:08,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:07:08,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:07:08,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:07:08,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:07:08,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:07:08,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:07:08,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:07:08,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:07:08,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:07:08,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:07:08,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:07:08,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:07:08,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:07:08,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:07:08,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:07:08,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:07:08,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:07:08,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:07:08,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:07:08,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:07:08,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:07:08,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:07:08,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:07:08,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:07:08,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:07:08,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:07:08,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:07:08,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:07:08,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:07:08,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:07:08,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:07:08,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:07:08,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:07:08,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:07:08,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:07:08,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:07:08,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:07:08,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:07:08,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:07:08,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:07:08,645 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 16:07:08,667 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:07:08,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:07:08,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:07:08,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:07:08,669 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:07:08,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:07:08,670 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:07:08,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:07:08,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:07:08,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:07:08,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:07:08,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:07:08,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:07:08,671 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:07:08,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:07:08,671 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:07:08,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:07:08,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:07:08,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:07:08,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:07:08,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:07:08,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:07:08,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:07:08,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:07:08,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:07:08,674 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:07:08,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:07:08,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:07:08,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:07:08,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true [2020-08-18 16:07:08,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:07:08,982 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:07:08,987 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:07:08,989 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:07:08,989 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:07:08,991 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-18 16:07:09,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a90e0950/03e06c18b02b47ec9488514546c524a3/FLAG9887d7524 [2020-08-18 16:07:09,616 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:07:09,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-18 16:07:09,629 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a90e0950/03e06c18b02b47ec9488514546c524a3/FLAG9887d7524 [2020-08-18 16:07:09,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a90e0950/03e06c18b02b47ec9488514546c524a3 [2020-08-18 16:07:09,913 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:07:09,915 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:07:09,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:07:09,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:07:09,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:07:09,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:07:09" (1/1) ... [2020-08-18 16:07:09,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30847a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:09, skipping insertion in model container [2020-08-18 16:07:09,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:07:09" (1/1) ... [2020-08-18 16:07:09,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:07:10,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:07:10,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:07:10,410 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:07:10,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:07:10,563 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:07:10,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:10 WrapperNode [2020-08-18 16:07:10,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:07:10,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:07:10,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:07:10,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:07:10,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:10" (1/1) ... [2020-08-18 16:07:10,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:10" (1/1) ... [2020-08-18 16:07:10,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:10" (1/1) ... [2020-08-18 16:07:10,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:10" (1/1) ... [2020-08-18 16:07:10,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:10" (1/1) ... [2020-08-18 16:07:10,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:10" (1/1) ... [2020-08-18 16:07:10,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:10" (1/1) ... [2020-08-18 16:07:10,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:07:10,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:07:10,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:07:10,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:07:10,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:10" (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 16:07:10,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:07:10,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:07:10,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:07:10,732 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:07:10,732 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:07:10,732 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:07:10,733 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:07:10,734 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:07:10,734 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:07:10,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:07:10,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 16:07:10,735 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:07:10,735 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:07:10,735 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:07:10,735 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:07:10,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:07:10,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:07:10,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 16:07:10,737 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:07:10,737 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:07:10,737 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:07:10,737 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:07:10,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:07:10,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:07:10,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:07:10,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:07:10,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:07:10,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:07:10,739 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:07:10,739 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:07:10,740 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:07:10,740 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:07:10,740 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 16:07:10,740 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:07:10,740 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:07:10,740 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:07:10,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:07:10,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:07:10,741 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:07:10,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:07:10,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 16:07:10,741 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 16:07:10,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:07:10,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:07:10,742 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:07:10,742 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:07:10,742 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:07:10,742 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:07:10,744 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:07:10,744 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:07:10,744 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:07:10,744 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:07:10,745 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 16:07:10,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:07:10,745 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:07:10,745 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:07:10,745 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:07:10,746 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:07:10,746 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:07:10,746 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:07:10,746 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:07:10,746 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:07:10,747 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:07:10,747 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:07:10,747 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:07:10,747 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:07:10,747 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:07:10,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 16:07:10,747 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:07:10,748 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:07:10,748 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:07:10,748 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:07:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:07:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:07:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:07:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:07:10,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:07:10,750 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:07:10,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:07:10,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:07:10,752 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:07:10,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:07:10,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:07:10,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:07:10,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:07:10,752 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 16:07:10,752 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:07:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:07:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:07:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:07:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:07:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:07:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 16:07:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 16:07:10,754 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:07:10,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:07:10,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:07:10,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:07:11,840 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:07:11,841 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:07:11,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:07:11 BoogieIcfgContainer [2020-08-18 16:07:11,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:07:11,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:07:11,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:07:11,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:07:11,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:07:09" (1/3) ... [2020-08-18 16:07:11,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773f31f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:07:11, skipping insertion in model container [2020-08-18 16:07:11,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:10" (2/3) ... [2020-08-18 16:07:11,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773f31f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:07:11, skipping insertion in model container [2020-08-18 16:07:11,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:07:11" (3/3) ... [2020-08-18 16:07:11,854 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product54.cil.c [2020-08-18 16:07:11,864 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:07:11,872 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:07:11,885 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:07:11,910 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:07:11,911 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:07:11,911 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:07:11,911 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:07:11,911 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:07:11,912 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:07:11,912 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:07:11,912 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:07:11,935 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-08-18 16:07:11,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 16:07:11,946 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:11,947 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 16:07:11,948 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:11,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:11,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1727770094, now seen corresponding path program 1 times [2020-08-18 16:07:11,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:11,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118865227] [2020-08-18 16:07:11,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:12,599 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:12,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:12,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:12,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:12,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:12,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:12,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:07:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:12,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:07:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:12,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:07:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:12,695 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 16:07:12,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118865227] [2020-08-18 16:07:12,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:07:12,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:07:12,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182414781] [2020-08-18 16:07:12,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:07:12,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:12,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:07:12,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:07:12,725 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 3 states. [2020-08-18 16:07:14,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:14,009 INFO L93 Difference]: Finished difference Result 350 states and 455 transitions. [2020-08-18 16:07:14,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:07:14,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 16:07:14,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:14,027 INFO L225 Difference]: With dead ends: 350 [2020-08-18 16:07:14,027 INFO L226 Difference]: Without dead ends: 188 [2020-08-18 16:07:14,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:07:14,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-18 16:07:14,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 153. [2020-08-18 16:07:14,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-18 16:07:14,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 181 transitions. [2020-08-18 16:07:14,157 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 181 transitions. Word has length 52 [2020-08-18 16:07:14,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:14,158 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 181 transitions. [2020-08-18 16:07:14,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:07:14,158 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 181 transitions. [2020-08-18 16:07:14,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 16:07:14,167 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:14,168 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] [2020-08-18 16:07:14,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:07:14,168 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:14,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:14,169 INFO L82 PathProgramCache]: Analyzing trace with hash -23295260, now seen corresponding path program 1 times [2020-08-18 16:07:14,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:14,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861001490] [2020-08-18 16:07:14,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:14,542 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:14,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:14,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:14,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:14,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:14,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:14,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:07:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:14,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:07:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:14,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:07:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:14,590 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 16:07:14,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861001490] [2020-08-18 16:07:14,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:07:14,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:07:14,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72989662] [2020-08-18 16:07:14,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:07:14,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:14,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:07:14,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:07:14,597 INFO L87 Difference]: Start difference. First operand 153 states and 181 transitions. Second operand 4 states. [2020-08-18 16:07:14,982 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:16,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:16,089 INFO L93 Difference]: Finished difference Result 279 states and 342 transitions. [2020-08-18 16:07:16,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:07:16,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 16:07:16,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:16,094 INFO L225 Difference]: With dead ends: 279 [2020-08-18 16:07:16,095 INFO L226 Difference]: Without dead ends: 172 [2020-08-18 16:07:16,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:07:16,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-18 16:07:16,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-18 16:07:16,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-18 16:07:16,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2020-08-18 16:07:16,166 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 53 [2020-08-18 16:07:16,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:16,166 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2020-08-18 16:07:16,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:07:16,166 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2020-08-18 16:07:16,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 16:07:16,169 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:16,169 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] [2020-08-18 16:07:16,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:07:16,169 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:16,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:16,170 INFO L82 PathProgramCache]: Analyzing trace with hash 646991369, now seen corresponding path program 1 times [2020-08-18 16:07:16,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:16,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484411546] [2020-08-18 16:07:16,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:16,509 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:16,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:16,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:16,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:16,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:16,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:16,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:07:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:16,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:07:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:16,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 16:07:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:16,649 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 16:07:16,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484411546] [2020-08-18 16:07:16,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:07:16,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:07:16,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635099396] [2020-08-18 16:07:16,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:07:16,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:16,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:07:16,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:07:16,652 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 8 states. [2020-08-18 16:07:17,003 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:17,343 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:17,581 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:17,822 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:19,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:19,278 INFO L93 Difference]: Finished difference Result 292 states and 360 transitions. [2020-08-18 16:07:19,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 16:07:19,279 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 16:07:19,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:19,283 INFO L225 Difference]: With dead ends: 292 [2020-08-18 16:07:19,283 INFO L226 Difference]: Without dead ends: 172 [2020-08-18 16:07:19,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:07:19,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-18 16:07:19,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-18 16:07:19,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-18 16:07:19,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2020-08-18 16:07:19,362 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 58 [2020-08-18 16:07:19,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:19,362 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2020-08-18 16:07:19,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:07:19,363 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2020-08-18 16:07:19,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-08-18 16:07:19,365 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:19,365 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] [2020-08-18 16:07:19,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:07:19,366 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:19,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:19,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1077665999, now seen corresponding path program 1 times [2020-08-18 16:07:19,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:19,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324481517] [2020-08-18 16:07:19,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,711 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:19,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:07:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 16:07:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 16:07:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 16:07:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,806 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 16:07:19,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324481517] [2020-08-18 16:07:19,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:07:19,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:07:19,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861607581] [2020-08-18 16:07:19,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:07:19,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:19,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:07:19,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:07:19,809 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 6 states. [2020-08-18 16:07:20,124 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:21,387 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:22,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:22,255 INFO L93 Difference]: Finished difference Result 407 states and 503 transitions. [2020-08-18 16:07:22,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:07:22,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-08-18 16:07:22,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:22,259 INFO L225 Difference]: With dead ends: 407 [2020-08-18 16:07:22,259 INFO L226 Difference]: Without dead ends: 287 [2020-08-18 16:07:22,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:07:22,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-08-18 16:07:22,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 244. [2020-08-18 16:07:22,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-18 16:07:22,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 277 transitions. [2020-08-18 16:07:22,323 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 277 transitions. Word has length 76 [2020-08-18 16:07:22,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:22,324 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 277 transitions. [2020-08-18 16:07:22,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:07:22,324 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 277 transitions. [2020-08-18 16:07:22,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 16:07:22,326 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:22,326 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] [2020-08-18 16:07:22,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:07:22,326 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:22,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:22,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1489636928, now seen corresponding path program 1 times [2020-08-18 16:07:22,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:22,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098810907] [2020-08-18 16:07:22,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,602 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:22,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:07:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:07:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 16:07:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 16:07:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 16:07:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:07:22,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098810907] [2020-08-18 16:07:22,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:07:22,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:07:22,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611404581] [2020-08-18 16:07:22,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:07:22,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:22,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:07:22,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:07:22,724 INFO L87 Difference]: Start difference. First operand 244 states and 277 transitions. Second operand 8 states. [2020-08-18 16:07:23,046 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:24,377 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:24,673 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:24,926 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:25,192 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:26,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:26,061 INFO L93 Difference]: Finished difference Result 641 states and 791 transitions. [2020-08-18 16:07:26,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 16:07:26,061 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-08-18 16:07:26,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:26,064 INFO L225 Difference]: With dead ends: 641 [2020-08-18 16:07:26,065 INFO L226 Difference]: Without dead ends: 421 [2020-08-18 16:07:26,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:07:26,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-08-18 16:07:26,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 378. [2020-08-18 16:07:26,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-08-18 16:07:26,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 436 transitions. [2020-08-18 16:07:26,141 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 436 transitions. Word has length 90 [2020-08-18 16:07:26,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:26,141 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 436 transitions. [2020-08-18 16:07:26,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:07:26,142 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 436 transitions. [2020-08-18 16:07:26,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 16:07:26,143 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:26,144 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 16:07:26,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:07:26,144 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:26,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:26,145 INFO L82 PathProgramCache]: Analyzing trace with hash -467189990, now seen corresponding path program 1 times [2020-08-18 16:07:26,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:26,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984175574] [2020-08-18 16:07:26,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:26,429 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:26,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:26,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:26,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:26,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:26,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:26,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:07:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:26,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:07:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:26,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:26,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:26,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:26,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:26,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:07:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:26,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 16:07:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:26,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 16:07:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:26,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 16:07:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:26,642 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 16:07:26,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984175574] [2020-08-18 16:07:26,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:07:26,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:07:26,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732822471] [2020-08-18 16:07:26,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:07:26,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:26,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:07:26,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:07:26,644 INFO L87 Difference]: Start difference. First operand 378 states and 436 transitions. Second operand 9 states. [2020-08-18 16:07:27,043 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:27,544 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:29,154 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:31,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:31,284 INFO L93 Difference]: Finished difference Result 980 states and 1245 transitions. [2020-08-18 16:07:31,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 16:07:31,284 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-18 16:07:31,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:31,290 INFO L225 Difference]: With dead ends: 980 [2020-08-18 16:07:31,290 INFO L226 Difference]: Without dead ends: 749 [2020-08-18 16:07:31,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-18 16:07:31,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-18 16:07:31,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 678. [2020-08-18 16:07:31,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-18 16:07:31,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 813 transitions. [2020-08-18 16:07:31,423 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 813 transitions. Word has length 94 [2020-08-18 16:07:31,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:31,423 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 813 transitions. [2020-08-18 16:07:31,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:07:31,423 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 813 transitions. [2020-08-18 16:07:31,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 16:07:31,425 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:31,425 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 16:07:31,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:07:31,426 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:31,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:31,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1892117019, now seen corresponding path program 1 times [2020-08-18 16:07:31,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:31,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218656568] [2020-08-18 16:07:31,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,657 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:31,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:07:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:07:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:07:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 16:07:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 16:07:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 16:07:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,802 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 16:07:31,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218656568] [2020-08-18 16:07:31,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:07:31,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:07:31,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845088405] [2020-08-18 16:07:31,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:07:31,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:31,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:07:31,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:07:31,806 INFO L87 Difference]: Start difference. First operand 678 states and 813 transitions. Second operand 8 states. [2020-08-18 16:07:32,772 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:33,010 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:07:33,274 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:34,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:34,583 INFO L93 Difference]: Finished difference Result 1250 states and 1552 transitions. [2020-08-18 16:07:34,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 16:07:34,583 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-18 16:07:34,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:34,588 INFO L225 Difference]: With dead ends: 1250 [2020-08-18 16:07:34,589 INFO L226 Difference]: Without dead ends: 723 [2020-08-18 16:07:34,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:07:34,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-08-18 16:07:34,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 678. [2020-08-18 16:07:34,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-18 16:07:34,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 812 transitions. [2020-08-18 16:07:34,729 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 812 transitions. Word has length 94 [2020-08-18 16:07:34,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:34,729 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 812 transitions. [2020-08-18 16:07:34,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:07:34,729 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 812 transitions. [2020-08-18 16:07:34,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 16:07:34,731 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:34,731 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 16:07:34,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:07:34,732 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:34,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:34,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1743318755, now seen corresponding path program 1 times [2020-08-18 16:07:34,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:34,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786242824] [2020-08-18 16:07:34,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,023 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:35,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:07:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:07:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:07:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 16:07:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 16:07:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 16:07:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,204 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 16:07:35,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786242824] [2020-08-18 16:07:35,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:07:35,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:07:35,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823867840] [2020-08-18 16:07:35,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:07:35,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:35,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:07:35,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:07:35,211 INFO L87 Difference]: Start difference. First operand 678 states and 812 transitions. Second operand 12 states. [2020-08-18 16:07:35,857 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:36,105 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:36,339 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:37,109 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:37,353 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:07:37,620 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:37,876 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:39,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:39,215 INFO L93 Difference]: Finished difference Result 1343 states and 1658 transitions. [2020-08-18 16:07:39,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 16:07:39,216 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-18 16:07:39,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:39,222 INFO L225 Difference]: With dead ends: 1343 [2020-08-18 16:07:39,222 INFO L226 Difference]: Without dead ends: 689 [2020-08-18 16:07:39,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-18 16:07:39,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-08-18 16:07:39,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 649. [2020-08-18 16:07:39,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 16:07:39,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 772 transitions. [2020-08-18 16:07:39,406 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 772 transitions. Word has length 94 [2020-08-18 16:07:39,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:39,407 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 772 transitions. [2020-08-18 16:07:39,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:07:39,407 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 772 transitions. [2020-08-18 16:07:39,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-18 16:07:39,411 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:39,412 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] [2020-08-18 16:07:39,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:07:39,412 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:39,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:39,413 INFO L82 PathProgramCache]: Analyzing trace with hash -794227168, now seen corresponding path program 1 times [2020-08-18 16:07:39,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:39,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276863041] [2020-08-18 16:07:39,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:39,733 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:39,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:39,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:39,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:39,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:39,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:39,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:07:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:39,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:07:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:39,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:39,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:39,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:39,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:39,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:07:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:39,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 16:07:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:39,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 16:07:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:39,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 16:07:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:39,883 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 16:07:39,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276863041] [2020-08-18 16:07:39,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:07:39,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 16:07:39,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653843791] [2020-08-18 16:07:39,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 16:07:39,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:39,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 16:07:39,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-18 16:07:39,887 INFO L87 Difference]: Start difference. First operand 649 states and 772 transitions. Second operand 13 states. [2020-08-18 16:07:40,531 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:40,764 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:40,986 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:42,051 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:42,670 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:42,996 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:07:43,281 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:07:44,059 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:44,383 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:44,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:44,971 INFO L93 Difference]: Finished difference Result 1307 states and 1571 transitions. [2020-08-18 16:07:44,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 16:07:44,972 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2020-08-18 16:07:44,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:44,977 INFO L225 Difference]: With dead ends: 1307 [2020-08-18 16:07:44,978 INFO L226 Difference]: Without dead ends: 682 [2020-08-18 16:07:44,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-08-18 16:07:44,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-08-18 16:07:45,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 649. [2020-08-18 16:07:45,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 16:07:45,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 756 transitions. [2020-08-18 16:07:45,104 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 756 transitions. Word has length 95 [2020-08-18 16:07:45,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:45,105 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 756 transitions. [2020-08-18 16:07:45,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 16:07:45,105 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 756 transitions. [2020-08-18 16:07:45,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 16:07:45,107 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:45,108 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:07:45,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:07:45,108 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:45,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:45,109 INFO L82 PathProgramCache]: Analyzing trace with hash -252196105, now seen corresponding path program 1 times [2020-08-18 16:07:45,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:45,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020442863] [2020-08-18 16:07:45,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,389 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:45,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:07:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:07:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:07:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 16:07:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 16:07:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:07:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 16:07:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 16:07:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 16:07:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,584 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 16:07:45,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020442863] [2020-08-18 16:07:45,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:07:45,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 16:07:45,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796312691] [2020-08-18 16:07:45,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:07:45,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:45,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:07:45,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:07:45,586 INFO L87 Difference]: Start difference. First operand 649 states and 756 transitions. Second operand 10 states. [2020-08-18 16:07:46,455 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:46,709 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:07:46,938 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:47,163 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:48,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:48,157 INFO L93 Difference]: Finished difference Result 1216 states and 1446 transitions. [2020-08-18 16:07:48,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:07:48,158 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 139 [2020-08-18 16:07:48,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:48,162 INFO L225 Difference]: With dead ends: 1216 [2020-08-18 16:07:48,163 INFO L226 Difference]: Without dead ends: 670 [2020-08-18 16:07:48,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:07:48,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-08-18 16:07:48,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 649. [2020-08-18 16:07:48,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 16:07:48,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 754 transitions. [2020-08-18 16:07:48,292 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 754 transitions. Word has length 139 [2020-08-18 16:07:48,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:48,293 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 754 transitions. [2020-08-18 16:07:48,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:07:48,293 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 754 transitions. [2020-08-18 16:07:48,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 16:07:48,295 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:48,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:07:48,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:07:48,296 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:48,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:48,296 INFO L82 PathProgramCache]: Analyzing trace with hash 2084196405, now seen corresponding path program 1 times [2020-08-18 16:07:48,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:48,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819281189] [2020-08-18 16:07:48,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:48,641 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:48,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:48,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:48,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:48,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:48,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:48,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:07:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:48,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:48,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:48,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:48,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:48,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:48,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:07:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:48,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:07:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:48,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:48,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 16:07:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:48,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 16:07:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:48,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:48,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:48,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:07:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:48,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 16:07:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:48,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 16:07:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:48,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 16:07:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:48,959 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 16:07:48,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819281189] [2020-08-18 16:07:48,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:07:48,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 16:07:48,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38770925] [2020-08-18 16:07:48,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:07:48,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:48,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:07:48,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:07:48,962 INFO L87 Difference]: Start difference. First operand 649 states and 754 transitions. Second operand 12 states. [2020-08-18 16:07:49,620 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:49,854 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:50,076 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:50,743 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:50,981 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:51,198 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:52,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:52,369 INFO L93 Difference]: Finished difference Result 1124 states and 1336 transitions. [2020-08-18 16:07:52,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:07:52,370 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2020-08-18 16:07:52,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:52,374 INFO L225 Difference]: With dead ends: 1124 [2020-08-18 16:07:52,374 INFO L226 Difference]: Without dead ends: 573 [2020-08-18 16:07:52,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:07:52,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-08-18 16:07:52,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 552. [2020-08-18 16:07:52,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-18 16:07:52,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 639 transitions. [2020-08-18 16:07:52,479 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 639 transitions. Word has length 139 [2020-08-18 16:07:52,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:52,480 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 639 transitions. [2020-08-18 16:07:52,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:07:52,480 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 639 transitions. [2020-08-18 16:07:52,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 16:07:52,484 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:52,484 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:07:52,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 16:07:52,485 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:52,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:52,485 INFO L82 PathProgramCache]: Analyzing trace with hash 2081124794, now seen corresponding path program 1 times [2020-08-18 16:07:52,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:52,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723447074] [2020-08-18 16:07:52,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:52,824 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:52,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:52,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:52,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:52,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:52,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:52,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:07:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:52,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:07:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:52,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:52,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:52,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:52,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:52,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:52,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:07:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:52,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:07:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:52,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:52,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 16:07:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:52,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 16:07:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:52,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:52,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:53,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:07:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:53,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 16:07:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:53,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 16:07:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:53,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 16:07:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-18 16:07:53,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723447074] [2020-08-18 16:07:53,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:07:53,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 16:07:53,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352972407] [2020-08-18 16:07:53,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 16:07:53,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:53,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 16:07:53,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:07:53,033 INFO L87 Difference]: Start difference. First operand 552 states and 639 transitions. Second operand 11 states. [2020-08-18 16:07:53,720 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:54,349 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:55,335 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:55,843 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-18 16:07:56,282 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-18 16:07:56,501 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:07:58,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:58,073 INFO L93 Difference]: Finished difference Result 1637 states and 1961 transitions. [2020-08-18 16:07:58,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 16:07:58,074 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 143 [2020-08-18 16:07:58,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:58,082 INFO L225 Difference]: With dead ends: 1637 [2020-08-18 16:07:58,082 INFO L226 Difference]: Without dead ends: 1109 [2020-08-18 16:07:58,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-08-18 16:07:58,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2020-08-18 16:07:58,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1077. [2020-08-18 16:07:58,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-08-18 16:07:58,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1232 transitions. [2020-08-18 16:07:58,305 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1232 transitions. Word has length 143 [2020-08-18 16:07:58,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:58,306 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1232 transitions. [2020-08-18 16:07:58,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 16:07:58,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1232 transitions. [2020-08-18 16:07:58,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 16:07:58,309 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:58,309 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:07:58,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 16:07:58,310 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:58,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:58,310 INFO L82 PathProgramCache]: Analyzing trace with hash -708969378, now seen corresponding path program 1 times [2020-08-18 16:07:58,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:58,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720776016] [2020-08-18 16:07:58,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,580 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:58,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:07:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:07:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:07:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:07:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:07:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 16:07:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 16:07:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:07:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 16:07:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 16:07:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 16:07:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:58,768 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 16:07:58,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720776016] [2020-08-18 16:07:58,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:07:58,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 16:07:58,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517853908] [2020-08-18 16:07:58,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 16:07:58,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:58,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 16:07:58,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:07:58,772 INFO L87 Difference]: Start difference. First operand 1077 states and 1232 transitions. Second operand 15 states. [2020-08-18 16:07:59,225 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:59,456 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:59,699 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:08:00,259 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:08:01,327 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:08:01,645 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:08:01,925 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:08:02,179 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:08:04,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:08:04,252 INFO L93 Difference]: Finished difference Result 2187 states and 2605 transitions. [2020-08-18 16:08:04,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 16:08:04,253 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2020-08-18 16:08:04,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:08:04,260 INFO L225 Difference]: With dead ends: 2187 [2020-08-18 16:08:04,260 INFO L226 Difference]: Without dead ends: 1134 [2020-08-18 16:08:04,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=227, Invalid=765, Unknown=0, NotChecked=0, Total=992 [2020-08-18 16:08:04,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2020-08-18 16:08:04,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1011. [2020-08-18 16:08:04,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2020-08-18 16:08:04,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1153 transitions. [2020-08-18 16:08:04,449 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1153 transitions. Word has length 147 [2020-08-18 16:08:04,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:08:04,449 INFO L479 AbstractCegarLoop]: Abstraction has 1011 states and 1153 transitions. [2020-08-18 16:08:04,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 16:08:04,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1153 transitions. [2020-08-18 16:08:04,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-18 16:08:04,452 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:08:04,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:08:04,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 16:08:04,453 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:08:04,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:08:04,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1161992490, now seen corresponding path program 1 times [2020-08-18 16:08:04,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:08:04,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114974726] [2020-08-18 16:08:04,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:08:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:04,729 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:08:04,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:08:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:04,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:08:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:04,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:08:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:04,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:08:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:04,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:08:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:04,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:08:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:04,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:08:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:04,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:08:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:04,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:08:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:04,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:08:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:04,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:08:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:04,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:08:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:04,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:08:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:04,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:08:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:04,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:08:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:04,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:08:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:04,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 16:08:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:04,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 16:08:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:04,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:08:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:04,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:08:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:04,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:08:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:04,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 16:08:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:04,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 16:08:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:04,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 16:08:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:05,017 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-08-18 16:08:05,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114974726] [2020-08-18 16:08:05,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:08:05,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 16:08:05,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772285858] [2020-08-18 16:08:05,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 16:08:05,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:08:05,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 16:08:05,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:08:05,019 INFO L87 Difference]: Start difference. First operand 1011 states and 1153 transitions. Second operand 15 states. [2020-08-18 16:08:05,488 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:08:06,226 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:08:07,445 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:08:07,808 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:08:08,359 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189