/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:22:35,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:22:35,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:22:35,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:22:35,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:22:35,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:22:35,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:22:35,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:22:35,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:22:35,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:22:35,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:22:35,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:22:35,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:22:35,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:22:35,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:22:35,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:22:35,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:22:35,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:22:35,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:22:35,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:22:35,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:22:35,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:22:35,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:22:35,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:22:35,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:22:35,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:22:35,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:22:35,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:22:35,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:22:35,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:22:35,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:22:35,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:22:35,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:22:35,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:22:35,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:22:35,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:22:35,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:22:35,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:22:35,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:22:35,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:22:35,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:22:35,719 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 10:22:35,765 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:22:35,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:22:35,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:22:35,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:22:35,767 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:22:35,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:22:35,768 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:22:35,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:22:35,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:22:35,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:22:35,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:22:35,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:22:35,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:22:35,771 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:22:35,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:22:35,771 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:22:35,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:22:35,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:22:35,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:22:35,772 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:22:35,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:22:35,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:22:35,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:22:35,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:22:35,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:22:35,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:22:35,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:22:35,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:22:35,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:22:35,774 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-18 10:22:36,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:22:36,087 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:22:36,090 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:22:36,092 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:22:36,092 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:22:36,093 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-18 10:22:36,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/010637ee2/15f26e706da0412a94f48db3e0a86d4f/FLAG9d1dff48e [2020-08-18 10:22:36,632 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:22:36,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-18 10:22:36,644 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/010637ee2/15f26e706da0412a94f48db3e0a86d4f/FLAG9d1dff48e [2020-08-18 10:22:36,988 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/010637ee2/15f26e706da0412a94f48db3e0a86d4f [2020-08-18 10:22:36,995 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:22:36,996 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:22:36,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:22:36,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:22:37,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:22:37,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:22:36" (1/1) ... [2020-08-18 10:22:37,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5ae353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:37, skipping insertion in model container [2020-08-18 10:22:37,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:22:36" (1/1) ... [2020-08-18 10:22:37,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:22:37,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:22:37,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:22:37,521 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:22:37,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:22:37,641 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:22:37,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:37 WrapperNode [2020-08-18 10:22:37,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:22:37,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:22:37,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:22:37,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:22:37,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:37" (1/1) ... [2020-08-18 10:22:37,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:37" (1/1) ... [2020-08-18 10:22:37,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:37" (1/1) ... [2020-08-18 10:22:37,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:37" (1/1) ... [2020-08-18 10:22:37,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:37" (1/1) ... [2020-08-18 10:22:37,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:37" (1/1) ... [2020-08-18 10:22:37,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:37" (1/1) ... [2020-08-18 10:22:37,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:22:37,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:22:37,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:22:37,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:22:37,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:22:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:22:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:22:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:22:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:22:37,838 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:22:37,838 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:22:37,838 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:22:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:22:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:22:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 10:22:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 10:22:37,840 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:22:37,840 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:22:37,840 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:22:37,840 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:22:37,841 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:22:37,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:22:37,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 10:22:37,842 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:22:37,842 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:22:37,842 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:22:37,842 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:22:37,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:22:37,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:22:37,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:22:37,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:22:37,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:22:37,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:22:37,844 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:22:37,844 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:22:37,844 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 10:22:37,845 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:22:37,845 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 10:22:37,845 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:22:37,846 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:22:37,846 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:22:37,846 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:22:37,846 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:22:37,846 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:22:37,846 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 10:22:37,847 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 10:22:37,847 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 10:22:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:22:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:22:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:22:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:22:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:22:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:22:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:22:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:22:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:22:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 10:22:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 10:22:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:22:37,850 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:22:37,850 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:22:37,850 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:22:37,850 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:22:37,850 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:22:37,851 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:22:37,851 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:22:37,851 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:22:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:22:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:22:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:22:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:22:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:22:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 10:22:37,853 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:22:37,853 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:22:37,853 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:22:37,853 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:22:37,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:22:37,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:22:37,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:22:37,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:22:37,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:22:37,855 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:22:37,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:22:37,856 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:22:37,856 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:22:37,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:22:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:22:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:22:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:22:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 10:22:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:22:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:22:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:22:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 10:22:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 10:22:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:22:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 10:22:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 10:22:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:22:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:22:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:22:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:22:38,869 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:22:38,870 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:22:38,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:22:38 BoogieIcfgContainer [2020-08-18 10:22:38,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:22:38,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:22:38,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:22:38,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:22:38,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:22:36" (1/3) ... [2020-08-18 10:22:38,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530f441c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:22:38, skipping insertion in model container [2020-08-18 10:22:38,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:37" (2/3) ... [2020-08-18 10:22:38,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530f441c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:22:38, skipping insertion in model container [2020-08-18 10:22:38,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:22:38" (3/3) ... [2020-08-18 10:22:38,883 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product54.cil.c [2020-08-18 10:22:38,893 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:22:38,900 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:22:38,914 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:22:38,939 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:22:38,939 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:22:38,939 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:22:38,939 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:22:38,940 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:22:38,940 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:22:38,940 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:22:38,940 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:22:38,962 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-08-18 10:22:38,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 10:22:38,974 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:38,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:22:38,975 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:38,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:38,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1727770094, now seen corresponding path program 1 times [2020-08-18 10:22:38,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:38,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698281706] [2020-08-18 10:22:38,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,662 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:39,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:22:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:22:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:22:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:39,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698281706] [2020-08-18 10:22:39,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:39,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 10:22:39,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436603068] [2020-08-18 10:22:39,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 10:22:39,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:39,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 10:22:39,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:22:39,800 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 3 states. [2020-08-18 10:22:41,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:41,005 INFO L93 Difference]: Finished difference Result 350 states and 455 transitions. [2020-08-18 10:22:41,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 10:22:41,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 10:22:41,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:41,022 INFO L225 Difference]: With dead ends: 350 [2020-08-18 10:22:41,022 INFO L226 Difference]: Without dead ends: 188 [2020-08-18 10:22:41,027 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 10:22:41,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-18 10:22:41,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 153. [2020-08-18 10:22:41,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-18 10:22:41,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 181 transitions. [2020-08-18 10:22:41,143 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 181 transitions. Word has length 52 [2020-08-18 10:22:41,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:41,144 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 181 transitions. [2020-08-18 10:22:41,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 10:22:41,144 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 181 transitions. [2020-08-18 10:22:41,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 10:22:41,148 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:41,148 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 10:22:41,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:22:41,149 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:41,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:41,149 INFO L82 PathProgramCache]: Analyzing trace with hash -23295260, now seen corresponding path program 1 times [2020-08-18 10:22:41,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:41,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416341874] [2020-08-18 10:22:41,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:41,465 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:41,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:41,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:41,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:41,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:41,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:41,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:22:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:41,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:22:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:41,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 10:22:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:41,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:41,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416341874] [2020-08-18 10:22:41,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:41,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:22:41,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144120496] [2020-08-18 10:22:41,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:22:41,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:41,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:22:41,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:22:41,514 INFO L87 Difference]: Start difference. First operand 153 states and 181 transitions. Second operand 4 states. [2020-08-18 10:22:41,948 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:22:42,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:42,838 INFO L93 Difference]: Finished difference Result 279 states and 342 transitions. [2020-08-18 10:22:42,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 10:22:42,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 10:22:42,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:42,843 INFO L225 Difference]: With dead ends: 279 [2020-08-18 10:22:42,843 INFO L226 Difference]: Without dead ends: 172 [2020-08-18 10:22:42,845 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 10:22:42,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-18 10:22:42,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-18 10:22:42,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-18 10:22:42,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2020-08-18 10:22:42,886 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 53 [2020-08-18 10:22:42,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:42,886 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2020-08-18 10:22:42,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:22:42,886 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2020-08-18 10:22:42,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 10:22:42,889 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:42,889 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 10:22:42,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:22:42,889 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:42,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:42,890 INFO L82 PathProgramCache]: Analyzing trace with hash 646991369, now seen corresponding path program 1 times [2020-08-18 10:22:42,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:42,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394928733] [2020-08-18 10:22:42,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:43,247 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:43,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:43,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:43,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:43,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:43,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:43,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:22:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:43,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:22:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:43,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:22:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:43,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:43,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394928733] [2020-08-18 10:22:43,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:43,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:22:43,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022841070] [2020-08-18 10:22:43,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:22:43,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:43,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:22:43,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:22:43,339 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 8 states. [2020-08-18 10:22:43,678 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:43,982 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:44,210 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:44,444 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:45,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:45,800 INFO L93 Difference]: Finished difference Result 292 states and 360 transitions. [2020-08-18 10:22:45,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 10:22:45,801 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 10:22:45,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:45,805 INFO L225 Difference]: With dead ends: 292 [2020-08-18 10:22:45,805 INFO L226 Difference]: Without dead ends: 172 [2020-08-18 10:22:45,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:22:45,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-18 10:22:45,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-18 10:22:45,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-18 10:22:45,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2020-08-18 10:22:45,847 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 58 [2020-08-18 10:22:45,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:45,847 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2020-08-18 10:22:45,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:22:45,847 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2020-08-18 10:22:45,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-08-18 10:22:45,850 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:45,850 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 10:22:45,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:22:45,851 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:45,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:45,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1077665999, now seen corresponding path program 1 times [2020-08-18 10:22:45,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:45,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715451498] [2020-08-18 10:22:45,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,115 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:46,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:22:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 10:22:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 10:22:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 10:22:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:46,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715451498] [2020-08-18 10:22:46,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:46,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 10:22:46,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666253249] [2020-08-18 10:22:46,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 10:22:46,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:46,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 10:22:46,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 10:22:46,227 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 6 states. [2020-08-18 10:22:46,511 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:47,648 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:22:48,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:48,449 INFO L93 Difference]: Finished difference Result 407 states and 503 transitions. [2020-08-18 10:22:48,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:22:48,449 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-08-18 10:22:48,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:48,456 INFO L225 Difference]: With dead ends: 407 [2020-08-18 10:22:48,458 INFO L226 Difference]: Without dead ends: 287 [2020-08-18 10:22:48,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:22:48,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-08-18 10:22:48,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 244. [2020-08-18 10:22:48,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-18 10:22:48,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 277 transitions. [2020-08-18 10:22:48,556 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 277 transitions. Word has length 76 [2020-08-18 10:22:48,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:48,557 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 277 transitions. [2020-08-18 10:22:48,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 10:22:48,558 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 277 transitions. [2020-08-18 10:22:48,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 10:22:48,560 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:48,561 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 10:22:48,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:22:48,561 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:48,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:48,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1489636928, now seen corresponding path program 1 times [2020-08-18 10:22:48,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:48,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575582959] [2020-08-18 10:22:48,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:48,825 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:48,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:48,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:48,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:48,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:48,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:48,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:22:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:48,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:48,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:48,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:48,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:22:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:48,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:22:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:48,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 10:22:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:48,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 10:22:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:48,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 10:22:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:48,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:48,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575582959] [2020-08-18 10:22:48,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:48,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:22:48,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480848462] [2020-08-18 10:22:48,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:22:48,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:48,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:22:48,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:22:48,978 INFO L87 Difference]: Start difference. First operand 244 states and 277 transitions. Second operand 8 states. [2020-08-18 10:22:49,345 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:50,765 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:51,069 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:51,300 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:51,516 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:52,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:52,384 INFO L93 Difference]: Finished difference Result 641 states and 791 transitions. [2020-08-18 10:22:52,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 10:22:52,385 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-08-18 10:22:52,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:52,392 INFO L225 Difference]: With dead ends: 641 [2020-08-18 10:22:52,392 INFO L226 Difference]: Without dead ends: 421 [2020-08-18 10:22:52,396 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 10:22:52,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-08-18 10:22:52,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 378. [2020-08-18 10:22:52,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-08-18 10:22:52,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 436 transitions. [2020-08-18 10:22:52,514 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 436 transitions. Word has length 90 [2020-08-18 10:22:52,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:52,515 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 436 transitions. [2020-08-18 10:22:52,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:22:52,515 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 436 transitions. [2020-08-18 10:22:52,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 10:22:52,517 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:52,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:22:52,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:22:52,518 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:52,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:52,519 INFO L82 PathProgramCache]: Analyzing trace with hash -467189990, now seen corresponding path program 1 times [2020-08-18 10:22:52,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:52,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395560031] [2020-08-18 10:22:52,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:52,769 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:52,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:52,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:52,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:52,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:52,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:52,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:22:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:52,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:22:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:52,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:52,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:52,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:52,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:22:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:52,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:22:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:52,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 10:22:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:52,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 10:22:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:52,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 10:22:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:52,883 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 10:22:52,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395560031] [2020-08-18 10:22:52,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:52,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:22:52,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503712429] [2020-08-18 10:22:52,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:22:52,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:52,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:22:52,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:22:52,886 INFO L87 Difference]: Start difference. First operand 378 states and 436 transitions. Second operand 9 states. [2020-08-18 10:22:53,199 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:53,696 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:55,255 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:57,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:57,270 INFO L93 Difference]: Finished difference Result 980 states and 1245 transitions. [2020-08-18 10:22:57,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 10:22:57,271 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-18 10:22:57,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:57,277 INFO L225 Difference]: With dead ends: 980 [2020-08-18 10:22:57,277 INFO L226 Difference]: Without dead ends: 749 [2020-08-18 10:22:57,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-18 10:22:57,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-18 10:22:57,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 678. [2020-08-18 10:22:57,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-18 10:22:57,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 813 transitions. [2020-08-18 10:22:57,389 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 813 transitions. Word has length 94 [2020-08-18 10:22:57,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:57,389 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 813 transitions. [2020-08-18 10:22:57,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:22:57,389 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 813 transitions. [2020-08-18 10:22:57,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 10:22:57,391 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:57,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:22:57,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:22:57,392 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:57,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:57,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1892117019, now seen corresponding path program 1 times [2020-08-18 10:22:57,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:57,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743914238] [2020-08-18 10:22:57,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:57,655 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:57,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:57,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:57,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:57,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:57,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:57,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:22:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:57,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:22:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:57,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:57,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:57,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:57,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:22:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:57,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:22:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:57,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 10:22:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:57,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 10:22:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:57,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 10:22:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:57,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:57,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743914238] [2020-08-18 10:22:57,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:57,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:22:57,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704740355] [2020-08-18 10:22:57,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:22:57,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:57,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:22:57,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:22:57,776 INFO L87 Difference]: Start difference. First operand 678 states and 813 transitions. Second operand 8 states. [2020-08-18 10:22:58,539 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:58,756 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:22:58,988 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:00,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:23:00,167 INFO L93 Difference]: Finished difference Result 1250 states and 1552 transitions. [2020-08-18 10:23:00,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 10:23:00,168 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-18 10:23:00,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:23:00,175 INFO L225 Difference]: With dead ends: 1250 [2020-08-18 10:23:00,176 INFO L226 Difference]: Without dead ends: 723 [2020-08-18 10:23:00,179 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 10:23:00,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-08-18 10:23:00,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 678. [2020-08-18 10:23:00,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-18 10:23:00,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 812 transitions. [2020-08-18 10:23:00,325 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 812 transitions. Word has length 94 [2020-08-18 10:23:00,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:23:00,325 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 812 transitions. [2020-08-18 10:23:00,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:23:00,325 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 812 transitions. [2020-08-18 10:23:00,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 10:23:00,328 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:23:00,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:23:00,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 10:23:00,328 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:23:00,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:23:00,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1743318755, now seen corresponding path program 1 times [2020-08-18 10:23:00,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:23:00,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023435234] [2020-08-18 10:23:00,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:23:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,618 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:23:00,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:23:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:23:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:23:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:23:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:23:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:23:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:23:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:23:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 10:23:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 10:23:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 10:23:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:23:00,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023435234] [2020-08-18 10:23:00,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:23:00,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 10:23:00,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053249562] [2020-08-18 10:23:00,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:23:00,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:23:00,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:23:00,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:23:00,808 INFO L87 Difference]: Start difference. First operand 678 states and 812 transitions. Second operand 12 states. [2020-08-18 10:23:01,370 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:01,638 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:01,859 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:02,521 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:02,759 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:23:03,008 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:03,230 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:04,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:23:04,581 INFO L93 Difference]: Finished difference Result 1343 states and 1658 transitions. [2020-08-18 10:23:04,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 10:23:04,582 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-18 10:23:04,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:23:04,590 INFO L225 Difference]: With dead ends: 1343 [2020-08-18 10:23:04,590 INFO L226 Difference]: Without dead ends: 689 [2020-08-18 10:23:04,593 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 10:23:04,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-08-18 10:23:04,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 649. [2020-08-18 10:23:04,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 10:23:04,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 772 transitions. [2020-08-18 10:23:04,721 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 772 transitions. Word has length 94 [2020-08-18 10:23:04,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:23:04,722 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 772 transitions. [2020-08-18 10:23:04,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:23:04,722 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 772 transitions. [2020-08-18 10:23:04,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-18 10:23:04,726 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:23:04,726 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 10:23:04,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 10:23:04,726 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:23:04,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:23:04,727 INFO L82 PathProgramCache]: Analyzing trace with hash -794227168, now seen corresponding path program 1 times [2020-08-18 10:23:04,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:23:04,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152290763] [2020-08-18 10:23:04,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:23:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:05,243 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:23:05,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:23:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:05,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:23:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:05,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:23:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:05,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:23:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:05,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:23:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:05,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:23:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:05,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:23:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:05,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:05,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:05,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:05,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:05,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:23:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:05,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 10:23:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:05,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 10:23:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:05,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 10:23:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:05,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:23:05,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152290763] [2020-08-18 10:23:05,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:23:05,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 10:23:05,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730532881] [2020-08-18 10:23:05,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 10:23:05,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:23:05,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 10:23:05,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-18 10:23:05,511 INFO L87 Difference]: Start difference. First operand 649 states and 772 transitions. Second operand 13 states. [2020-08-18 10:23:06,167 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:06,428 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:06,652 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:07,624 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:23:08,231 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:08,550 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:23:08,830 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:23:09,543 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:23:09,805 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:10,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:23:10,356 INFO L93 Difference]: Finished difference Result 1307 states and 1571 transitions. [2020-08-18 10:23:10,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 10:23:10,357 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2020-08-18 10:23:10,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:23:10,362 INFO L225 Difference]: With dead ends: 1307 [2020-08-18 10:23:10,362 INFO L226 Difference]: Without dead ends: 682 [2020-08-18 10:23:10,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-08-18 10:23:10,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-08-18 10:23:10,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 649. [2020-08-18 10:23:10,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 10:23:10,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 756 transitions. [2020-08-18 10:23:10,492 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 756 transitions. Word has length 95 [2020-08-18 10:23:10,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:23:10,493 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 756 transitions. [2020-08-18 10:23:10,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 10:23:10,493 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 756 transitions. [2020-08-18 10:23:10,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 10:23:10,496 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:23:10,496 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 10:23:10,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 10:23:10,497 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:23:10,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:23:10,497 INFO L82 PathProgramCache]: Analyzing trace with hash -252196105, now seen corresponding path program 1 times [2020-08-18 10:23:10,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:23:10,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223232256] [2020-08-18 10:23:10,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:23:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:10,801 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:23:10,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:23:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:10,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:23:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:10,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:23:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:10,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:23:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:10,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:23:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:10,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:23:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:10,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:10,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:10,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:10,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:10,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:10,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:23:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:10,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:23:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:10,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:10,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 10:23:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:10,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 10:23:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:10,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:10,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:10,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:23:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:10,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 10:23:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:10,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 10:23:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:10,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 10:23:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:11,006 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 10:23:11,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223232256] [2020-08-18 10:23:11,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:23:11,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 10:23:11,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115970185] [2020-08-18 10:23:11,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:23:11,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:23:11,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:23:11,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:23:11,009 INFO L87 Difference]: Start difference. First operand 649 states and 756 transitions. Second operand 10 states. [2020-08-18 10:23:11,827 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:12,057 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:23:12,286 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:12,508 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:13,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:23:13,468 INFO L93 Difference]: Finished difference Result 1216 states and 1446 transitions. [2020-08-18 10:23:13,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:23:13,469 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 139 [2020-08-18 10:23:13,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:23:13,473 INFO L225 Difference]: With dead ends: 1216 [2020-08-18 10:23:13,474 INFO L226 Difference]: Without dead ends: 670 [2020-08-18 10:23:13,476 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 10:23:13,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-08-18 10:23:13,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 649. [2020-08-18 10:23:13,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 10:23:13,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 754 transitions. [2020-08-18 10:23:13,591 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 754 transitions. Word has length 139 [2020-08-18 10:23:13,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:23:13,592 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 754 transitions. [2020-08-18 10:23:13,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:23:13,592 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 754 transitions. [2020-08-18 10:23:13,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 10:23:13,594 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:23:13,595 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 10:23:13,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 10:23:13,595 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:23:13,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:23:13,595 INFO L82 PathProgramCache]: Analyzing trace with hash 2084196405, now seen corresponding path program 1 times [2020-08-18 10:23:13,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:23:13,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947984679] [2020-08-18 10:23:13,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:23:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:13,953 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:23:13,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:23:13,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:13,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:23:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:13,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:23:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:13,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:23:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:13,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:23:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:14,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:23:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:14,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:14,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:14,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:14,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:14,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:14,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:23:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:14,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:23:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:14,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:14,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 10:23:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:14,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 10:23:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:14,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:14,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:14,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:23:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:14,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 10:23:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:14,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 10:23:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:14,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 10:23:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:14,215 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 10:23:14,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947984679] [2020-08-18 10:23:14,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:23:14,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 10:23:14,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639722266] [2020-08-18 10:23:14,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:23:14,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:23:14,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:23:14,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:23:14,218 INFO L87 Difference]: Start difference. First operand 649 states and 754 transitions. Second operand 12 states. [2020-08-18 10:23:14,934 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:15,277 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:15,538 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:16,238 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:16,472 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:16,684 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:17,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:23:17,751 INFO L93 Difference]: Finished difference Result 1124 states and 1336 transitions. [2020-08-18 10:23:17,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 10:23:17,753 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2020-08-18 10:23:17,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:23:17,757 INFO L225 Difference]: With dead ends: 1124 [2020-08-18 10:23:17,757 INFO L226 Difference]: Without dead ends: 573 [2020-08-18 10:23:17,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 10:23:17,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-08-18 10:23:17,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 552. [2020-08-18 10:23:17,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-18 10:23:17,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 639 transitions. [2020-08-18 10:23:17,860 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 639 transitions. Word has length 139 [2020-08-18 10:23:17,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:23:17,860 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 639 transitions. [2020-08-18 10:23:17,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:23:17,861 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 639 transitions. [2020-08-18 10:23:17,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 10:23:17,864 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:23:17,864 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 10:23:17,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 10:23:17,864 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:23:17,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:23:17,865 INFO L82 PathProgramCache]: Analyzing trace with hash 2081124794, now seen corresponding path program 1 times [2020-08-18 10:23:17,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:23:17,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011204015] [2020-08-18 10:23:17,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:23:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,112 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:23:18,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:23:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:23:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:23:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:23:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:23:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:23:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:23:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:23:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:23:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 10:23:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 10:23:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:23:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 10:23:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 10:23:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 10:23:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,348 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 10:23:18,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011204015] [2020-08-18 10:23:18,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:23:18,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 10:23:18,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497348929] [2020-08-18 10:23:18,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 10:23:18,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:23:18,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 10:23:18,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:23:18,353 INFO L87 Difference]: Start difference. First operand 552 states and 639 transitions. Second operand 11 states. [2020-08-18 10:23:18,972 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:23:19,552 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:20,444 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:20,919 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-18 10:23:21,380 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-18 10:23:21,600 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:23:23,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:23:23,131 INFO L93 Difference]: Finished difference Result 1637 states and 1961 transitions. [2020-08-18 10:23:23,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 10:23:23,132 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 143 [2020-08-18 10:23:23,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:23:23,139 INFO L225 Difference]: With dead ends: 1637 [2020-08-18 10:23:23,139 INFO L226 Difference]: Without dead ends: 1109 [2020-08-18 10:23:23,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-08-18 10:23:23,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2020-08-18 10:23:23,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1077. [2020-08-18 10:23:23,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-08-18 10:23:23,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1232 transitions. [2020-08-18 10:23:23,370 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1232 transitions. Word has length 143 [2020-08-18 10:23:23,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:23:23,372 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1232 transitions. [2020-08-18 10:23:23,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 10:23:23,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1232 transitions. [2020-08-18 10:23:23,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 10:23:23,374 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:23:23,375 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 10:23:23,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 10:23:23,375 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:23:23,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:23:23,375 INFO L82 PathProgramCache]: Analyzing trace with hash -708969378, now seen corresponding path program 1 times [2020-08-18 10:23:23,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:23:23,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544919959] [2020-08-18 10:23:23,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:23:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,679 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:23:23,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:23:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:23:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:23:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:23:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:23:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:23:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 10:23:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 10:23:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:23:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:23:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 10:23:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 10:23:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:23:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 10:23:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 10:23:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 10:23:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:23,880 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 10:23:23,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544919959] [2020-08-18 10:23:23,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:23:23,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 10:23:23,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101526106] [2020-08-18 10:23:23,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 10:23:23,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:23:23,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 10:23:23,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 10:23:23,884 INFO L87 Difference]: Start difference. First operand 1077 states and 1232 transitions. Second operand 15 states. [2020-08-18 10:23:24,534 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:24,777 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:24,996 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:25,552 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:23:26,624 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:23:26,934 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:27,200 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:23:27,439 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:23:29,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:23:29,428 INFO L93 Difference]: Finished difference Result 2187 states and 2605 transitions. [2020-08-18 10:23:29,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 10:23:29,431 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2020-08-18 10:23:29,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:23:29,438 INFO L225 Difference]: With dead ends: 2187 [2020-08-18 10:23:29,438 INFO L226 Difference]: Without dead ends: 1134 [2020-08-18 10:23:29,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=227, Invalid=765, Unknown=0, NotChecked=0, Total=992 [2020-08-18 10:23:29,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2020-08-18 10:23:29,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1011. [2020-08-18 10:23:29,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2020-08-18 10:23:29,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1153 transitions. [2020-08-18 10:23:29,626 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1153 transitions. Word has length 147 [2020-08-18 10:23:29,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:23:29,627 INFO L479 AbstractCegarLoop]: Abstraction has 1011 states and 1153 transitions. [2020-08-18 10:23:29,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 10:23:29,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1153 transitions. [2020-08-18 10:23:29,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-18 10:23:29,631 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:23:29,631 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 10:23:29,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 10:23:29,632 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:23:29,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:23:29,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1161992490, now seen corresponding path program 1 times [2020-08-18 10:23:29,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:23:29,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246710938] [2020-08-18 10:23:29,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:23:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:29,875 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:23:29,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:23:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:29,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:23:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:29,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:23:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:29,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:23:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:29,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:23:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:29,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:23:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:29,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:23:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:29,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:29,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:29,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:29,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:29,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:29,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:23:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:29,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:23:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:29,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:30,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 10:23:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:30,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 10:23:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:30,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 10:23:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:30,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:30,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:30,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:23:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:30,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 10:23:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:30,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 10:23:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:30,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 10:23:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:30,118 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 10:23:30,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246710938] [2020-08-18 10:23:30,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:23:30,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 10:23:30,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389286981] [2020-08-18 10:23:30,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 10:23:30,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:23:30,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 10:23:30,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 10:23:30,120 INFO L87 Difference]: Start difference. First operand 1011 states and 1153 transitions. Second operand 15 states. [2020-08-18 10:23:30,493 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:23:31,166 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:32,274 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:32,597 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:23:33,076 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-18 10:23:33,520 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-18 10:23:34,463 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:23:34,699 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:23:34,938 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:35,172 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:23:35,398 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:35,628 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189