/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:38:46,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:38:46,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:38:46,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:38:46,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:38:46,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:38:46,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:38:46,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:38:46,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:38:46,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:38:46,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:38:46,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:38:46,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:38:46,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:38:46,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:38:46,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:38:46,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:38:46,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:38:46,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:38:46,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:38:46,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:38:46,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:38:46,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:38:46,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:38:46,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:38:46,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:38:46,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:38:46,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:38:46,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:38:46,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:38:46,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:38:46,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:38:46,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:38:46,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:38:46,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:38:46,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:38:46,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:38:46,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:38:46,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:38:46,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:38:46,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:38:46,643 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 22:38:46,667 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:38:46,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:38:46,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:38:46,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:38:46,669 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:38:46,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:38:46,670 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:38:46,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:38:46,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:38:46,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:38:46,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:38:46,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:38:46,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:38:46,671 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:38:46,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:38:46,672 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:38:46,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:38:46,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:38:46,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:38:46,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:38:46,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:38:46,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:38:46,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:38:46,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:38:46,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:38:46,674 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:38:46,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:38:46,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:38:46,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:38:46,675 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:38:46,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:38:46,991 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:38:46,995 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:38:46,996 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:38:46,997 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:38:46,998 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2020-08-18 22:38:47,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c01a1431c/0aff3c2b64dd42968066a104309d38e2/FLAG0ed3cc0c8 [2020-08-18 22:38:47,603 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:38:47,604 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2020-08-18 22:38:47,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c01a1431c/0aff3c2b64dd42968066a104309d38e2/FLAG0ed3cc0c8 [2020-08-18 22:38:47,906 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c01a1431c/0aff3c2b64dd42968066a104309d38e2 [2020-08-18 22:38:47,916 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:38:47,918 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:38:47,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:38:47,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:38:47,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:38:47,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:38:47" (1/1) ... [2020-08-18 22:38:47,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22e57099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:38:47, skipping insertion in model container [2020-08-18 22:38:47,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:38:47" (1/1) ... [2020-08-18 22:38:47,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:38:47,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:38:48,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:38:48,407 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:38:48,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:38:48,559 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:38:48,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:38:48 WrapperNode [2020-08-18 22:38:48,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:38:48,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:38:48,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:38:48,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:38:48,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:38:48" (1/1) ... [2020-08-18 22:38:48,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:38:48" (1/1) ... [2020-08-18 22:38:48,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:38:48" (1/1) ... [2020-08-18 22:38:48,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:38:48" (1/1) ... [2020-08-18 22:38:48,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:38:48" (1/1) ... [2020-08-18 22:38:48,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:38:48" (1/1) ... [2020-08-18 22:38:48,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:38:48" (1/1) ... [2020-08-18 22:38:48,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:38:48,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:38:48,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:38:48,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:38:48,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:38:48" (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 22:38:48,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:38:48,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:38:48,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 22:38:48,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 22:38:48,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 22:38:48,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 22:38:48,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 22:38:48,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 22:38:48,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 22:38:48,714 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 22:38:48,714 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 22:38:48,714 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 22:38:48,714 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 22:38:48,714 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:38:48,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 22:38:48,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 22:38:48,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 22:38:48,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 22:38:48,715 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 22:38:48,715 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 22:38:48,716 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 22:38:48,716 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 22:38:48,716 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 22:38:48,716 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 22:38:48,716 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 22:38:48,716 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 22:38:48,716 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 22:38:48,717 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 22:38:48,717 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 22:38:48,717 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 22:38:48,717 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 22:38:48,717 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 22:38:48,717 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 22:38:48,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 22:38:48,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 22:38:48,718 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 22:38:48,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 22:38:48,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 22:38:48,718 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 22:38:48,719 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 22:38:48,719 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 22:38:48,719 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 22:38:48,719 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 22:38:48,719 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 22:38:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:38:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:38:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 22:38:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 22:38:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:38:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 22:38:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 22:38:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:38:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 22:38:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:38:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 22:38:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 22:38:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:38:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 22:38:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 22:38:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:38:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 22:38:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 22:38:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:38:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 22:38:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 22:38:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 22:38:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 22:38:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 22:38:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 22:38:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 22:38:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 22:38:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 22:38:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 22:38:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 22:38:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 22:38:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 22:38:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 22:38:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:38:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 22:38:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 22:38:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 22:38:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 22:38:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 22:38:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 22:38:48,726 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 22:38:48,726 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 22:38:48,726 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 22:38:48,726 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 22:38:48,726 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 22:38:48,726 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 22:38:48,726 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 22:38:48,727 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 22:38:48,727 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 22:38:48,727 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 22:38:48,727 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 22:38:48,727 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 22:38:48,727 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 22:38:48,727 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 22:38:48,727 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 22:38:48,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:38:48,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 22:38:48,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:38:49,763 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:38:49,763 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 22:38:49,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:38:49 BoogieIcfgContainer [2020-08-18 22:38:49,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:38:49,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:38:49,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:38:49,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:38:49,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:38:47" (1/3) ... [2020-08-18 22:38:49,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@237ffc81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:38:49, skipping insertion in model container [2020-08-18 22:38:49,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:38:48" (2/3) ... [2020-08-18 22:38:49,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@237ffc81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:38:49, skipping insertion in model container [2020-08-18 22:38:49,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:38:49" (3/3) ... [2020-08-18 22:38:49,782 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product52.cil.c [2020-08-18 22:38:49,793 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:38:49,802 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:38:49,818 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:38:49,852 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:38:49,852 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:38:49,853 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:38:49,853 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:38:49,853 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:38:49,855 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:38:49,855 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:38:49,855 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:38:49,885 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2020-08-18 22:38:49,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 22:38:49,902 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:38:49,904 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 22:38:49,905 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:38:49,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:38:49,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1089631799, now seen corresponding path program 1 times [2020-08-18 22:38:49,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:38:49,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760620540] [2020-08-18 22:38:49,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:38:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:50,674 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:38:50,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:38:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:50,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:38:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:50,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:38:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:50,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:38:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:50,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:38:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:50,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:38:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:50,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:38:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:50,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:38:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:50,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 22:38:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:50,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 22:38:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:50,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 22:38:50,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760620540] [2020-08-18 22:38:50,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:38:50,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:38:50,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626207165] [2020-08-18 22:38:50,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:38:50,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:38:50,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:38:50,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:38:50,883 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 4 states. [2020-08-18 22:38:52,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:38:52,123 INFO L93 Difference]: Finished difference Result 328 states and 422 transitions. [2020-08-18 22:38:52,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 22:38:52,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 22:38:52,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:38:52,140 INFO L225 Difference]: With dead ends: 328 [2020-08-18 22:38:52,140 INFO L226 Difference]: Without dead ends: 181 [2020-08-18 22:38:52,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:38:52,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-08-18 22:38:52,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 148. [2020-08-18 22:38:52,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-18 22:38:52,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 174 transitions. [2020-08-18 22:38:52,264 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 174 transitions. Word has length 59 [2020-08-18 22:38:52,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:38:52,265 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 174 transitions. [2020-08-18 22:38:52,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:38:52,265 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 174 transitions. [2020-08-18 22:38:52,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 22:38:52,279 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:38:52,279 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 22:38:52,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:38:52,279 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:38:52,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:38:52,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1975382983, now seen corresponding path program 1 times [2020-08-18 22:38:52,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:38:52,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143560731] [2020-08-18 22:38:52,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:38:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:52,625 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:38:52,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:38:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:52,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:38:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:52,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:38:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:52,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:38:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:52,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:38:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:52,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:38:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:52,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:38:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:52,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:38:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:52,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 22:38:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:52,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 22:38:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:52,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 22:38:52,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143560731] [2020-08-18 22:38:52,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:38:52,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 22:38:52,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001796068] [2020-08-18 22:38:52,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 22:38:52,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:38:52,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 22:38:52,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:38:52,688 INFO L87 Difference]: Start difference. First operand 148 states and 174 transitions. Second operand 5 states. [2020-08-18 22:38:53,175 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:38:54,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:38:54,127 INFO L93 Difference]: Finished difference Result 263 states and 322 transitions. [2020-08-18 22:38:54,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 22:38:54,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 22:38:54,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:38:54,132 INFO L225 Difference]: With dead ends: 263 [2020-08-18 22:38:54,133 INFO L226 Difference]: Without dead ends: 171 [2020-08-18 22:38:54,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 22:38:54,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-18 22:38:54,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 139. [2020-08-18 22:38:54,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-18 22:38:54,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 162 transitions. [2020-08-18 22:38:54,175 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 162 transitions. Word has length 60 [2020-08-18 22:38:54,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:38:54,175 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 162 transitions. [2020-08-18 22:38:54,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 22:38:54,176 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 162 transitions. [2020-08-18 22:38:54,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 22:38:54,177 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:38:54,177 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 22:38:54,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:38:54,178 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:38:54,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:38:54,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1007889166, now seen corresponding path program 1 times [2020-08-18 22:38:54,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:38:54,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245795889] [2020-08-18 22:38:54,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:38:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:54,515 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:38:54,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:38:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:54,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:38:54,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:54,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:38:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:54,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:38:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:54,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:38:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:54,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:38:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:54,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:38:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:54,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:38:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:54,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 22:38:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:54,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 22:38:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:54,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 22:38:54,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245795889] [2020-08-18 22:38:54,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:38:54,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:38:54,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373010679] [2020-08-18 22:38:54,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:38:54,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:38:54,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:38:54,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:38:54,628 INFO L87 Difference]: Start difference. First operand 139 states and 162 transitions. Second operand 9 states. [2020-08-18 22:38:55,093 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:38:55,420 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:38:55,674 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:38:55,971 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:38:56,881 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:38:58,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:38:58,722 INFO L93 Difference]: Finished difference Result 466 states and 577 transitions. [2020-08-18 22:38:58,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 22:38:58,725 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-18 22:38:58,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:38:58,731 INFO L225 Difference]: With dead ends: 466 [2020-08-18 22:38:58,732 INFO L226 Difference]: Without dead ends: 355 [2020-08-18 22:38:58,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 22:38:58,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-08-18 22:38:58,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 294. [2020-08-18 22:38:58,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-18 22:38:58,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 356 transitions. [2020-08-18 22:38:58,802 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 356 transitions. Word has length 65 [2020-08-18 22:38:58,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:38:58,803 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 356 transitions. [2020-08-18 22:38:58,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:38:58,803 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 356 transitions. [2020-08-18 22:38:58,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 22:38:58,805 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:38:58,805 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 22:38:58,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:38:58,805 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:38:58,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:38:58,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1025318737, now seen corresponding path program 1 times [2020-08-18 22:38:58,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:38:58,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079480662] [2020-08-18 22:38:58,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:38:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:59,104 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:38:59,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:38:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:59,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:38:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:59,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:38:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:59,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:38:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:59,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:38:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:59,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:38:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:59,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:38:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:59,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:38:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:59,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:38:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:59,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 22:38:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:59,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 22:38:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:59,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 22:38:59,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079480662] [2020-08-18 22:38:59,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:38:59,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:38:59,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700807857] [2020-08-18 22:38:59,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:38:59,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:38:59,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:38:59,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:38:59,234 INFO L87 Difference]: Start difference. First operand 294 states and 356 transitions. Second operand 9 states. [2020-08-18 22:38:59,651 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:00,336 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:01,172 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:01,494 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:01,766 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:02,037 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:02,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:39:02,854 INFO L93 Difference]: Finished difference Result 755 states and 986 transitions. [2020-08-18 22:39:02,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 22:39:02,855 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-18 22:39:02,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:39:02,861 INFO L225 Difference]: With dead ends: 755 [2020-08-18 22:39:02,861 INFO L226 Difference]: Without dead ends: 489 [2020-08-18 22:39:02,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 22:39:02,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2020-08-18 22:39:02,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 421. [2020-08-18 22:39:02,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-08-18 22:39:02,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 507 transitions. [2020-08-18 22:39:02,966 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 507 transitions. Word has length 70 [2020-08-18 22:39:02,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:39:02,967 INFO L479 AbstractCegarLoop]: Abstraction has 421 states and 507 transitions. [2020-08-18 22:39:02,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:39:02,967 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 507 transitions. [2020-08-18 22:39:02,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 22:39:02,969 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:39:02,970 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 22:39:02,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:39:02,970 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:39:02,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:39:02,971 INFO L82 PathProgramCache]: Analyzing trace with hash -2085443903, now seen corresponding path program 1 times [2020-08-18 22:39:02,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:39:02,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264805670] [2020-08-18 22:39:02,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:39:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,219 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:39:03,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:39:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:39:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:39:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:39:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:39:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 22:39:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:39:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 22:39:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 22:39:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 22:39:03,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264805670] [2020-08-18 22:39:03,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:39:03,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:39:03,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991745831] [2020-08-18 22:39:03,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:39:03,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:39:03,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:39:03,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:39:03,405 INFO L87 Difference]: Start difference. First operand 421 states and 507 transitions. Second operand 9 states. [2020-08-18 22:39:04,516 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:04,779 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 22:39:05,040 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:05,315 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:06,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:39:06,115 INFO L93 Difference]: Finished difference Result 903 states and 1149 transitions. [2020-08-18 22:39:06,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 22:39:06,116 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-18 22:39:06,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:39:06,120 INFO L225 Difference]: With dead ends: 903 [2020-08-18 22:39:06,120 INFO L226 Difference]: Without dead ends: 510 [2020-08-18 22:39:06,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 22:39:06,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-08-18 22:39:06,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 434. [2020-08-18 22:39:06,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-08-18 22:39:06,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 521 transitions. [2020-08-18 22:39:06,208 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 521 transitions. Word has length 93 [2020-08-18 22:39:06,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:39:06,209 INFO L479 AbstractCegarLoop]: Abstraction has 434 states and 521 transitions. [2020-08-18 22:39:06,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:39:06,209 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 521 transitions. [2020-08-18 22:39:06,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 22:39:06,211 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:39:06,211 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 22:39:06,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 22:39:06,212 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:39:06,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:39:06,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1383844029, now seen corresponding path program 1 times [2020-08-18 22:39:06,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:39:06,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262971161] [2020-08-18 22:39:06,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:39:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:06,475 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:39:06,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:06,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:39:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:06,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:06,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:39:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:06,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:39:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:06,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:39:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:06,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:39:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:06,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:06,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 22:39:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:06,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:06,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:06,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:06,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:39:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:06,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 22:39:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:06,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 22:39:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:06,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 22:39:06,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262971161] [2020-08-18 22:39:06,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:39:06,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 22:39:06,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131301838] [2020-08-18 22:39:06,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 22:39:06,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:39:06,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 22:39:06,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 22:39:06,658 INFO L87 Difference]: Start difference. First operand 434 states and 521 transitions. Second operand 11 states. [2020-08-18 22:39:07,194 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:07,425 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:07,643 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:08,415 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:08,706 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:08,962 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:09,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:39:09,852 INFO L93 Difference]: Finished difference Result 930 states and 1198 transitions. [2020-08-18 22:39:09,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 22:39:09,853 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-18 22:39:09,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:39:09,857 INFO L225 Difference]: With dead ends: 930 [2020-08-18 22:39:09,857 INFO L226 Difference]: Without dead ends: 524 [2020-08-18 22:39:09,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 22:39:09,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-08-18 22:39:09,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 442. [2020-08-18 22:39:09,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-08-18 22:39:09,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 529 transitions. [2020-08-18 22:39:09,937 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 529 transitions. Word has length 93 [2020-08-18 22:39:09,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:39:09,937 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 529 transitions. [2020-08-18 22:39:09,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 22:39:09,938 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 529 transitions. [2020-08-18 22:39:09,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 22:39:09,939 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:39:09,939 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 22:39:09,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 22:39:09,940 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:39:09,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:39:09,940 INFO L82 PathProgramCache]: Analyzing trace with hash 341636868, now seen corresponding path program 1 times [2020-08-18 22:39:09,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:39:09,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061554039] [2020-08-18 22:39:09,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:39:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,207 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:39:10,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:39:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:39:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:39:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:39:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:39:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 22:39:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:39:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 22:39:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 22:39:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 22:39:10,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061554039] [2020-08-18 22:39:10,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:39:10,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 22:39:10,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25414814] [2020-08-18 22:39:10,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 22:39:10,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:39:10,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 22:39:10,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 22:39:10,346 INFO L87 Difference]: Start difference. First operand 442 states and 529 transitions. Second operand 7 states. [2020-08-18 22:39:10,677 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:11,228 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:13,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:39:13,271 INFO L93 Difference]: Finished difference Result 1411 states and 1828 transitions. [2020-08-18 22:39:13,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 22:39:13,272 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-08-18 22:39:13,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:39:13,280 INFO L225 Difference]: With dead ends: 1411 [2020-08-18 22:39:13,281 INFO L226 Difference]: Without dead ends: 997 [2020-08-18 22:39:13,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 22:39:13,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-08-18 22:39:13,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 919. [2020-08-18 22:39:13,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2020-08-18 22:39:13,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1115 transitions. [2020-08-18 22:39:13,544 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1115 transitions. Word has length 93 [2020-08-18 22:39:13,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:39:13,544 INFO L479 AbstractCegarLoop]: Abstraction has 919 states and 1115 transitions. [2020-08-18 22:39:13,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 22:39:13,544 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1115 transitions. [2020-08-18 22:39:13,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 22:39:13,550 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:39:13,551 INFO L422 BasicCegarLoop]: trace histogram [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 22:39:13,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 22:39:13,551 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:39:13,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:39:13,552 INFO L82 PathProgramCache]: Analyzing trace with hash -643321942, now seen corresponding path program 1 times [2020-08-18 22:39:13,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:39:13,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854728130] [2020-08-18 22:39:13,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:39:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:13,948 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:39:13,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:13,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:13,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:39:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:13,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:13,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:39:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:13,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:39:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:13,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:39:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:39:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 22:39:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 22:39:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:39:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 22:39:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 22:39:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 22:39:14,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854728130] [2020-08-18 22:39:14,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:39:14,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 22:39:14,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131801311] [2020-08-18 22:39:14,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 22:39:14,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:39:14,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 22:39:14,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:39:14,102 INFO L87 Difference]: Start difference. First operand 919 states and 1115 transitions. Second operand 12 states. [2020-08-18 22:39:14,648 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:15,271 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:16,015 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:16,357 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:16,606 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:39:16,898 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:17,167 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:19,280 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:19,573 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:20,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:39:20,132 INFO L93 Difference]: Finished difference Result 2611 states and 3380 transitions. [2020-08-18 22:39:20,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 22:39:20,136 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-08-18 22:39:20,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:39:20,148 INFO L225 Difference]: With dead ends: 2611 [2020-08-18 22:39:20,148 INFO L226 Difference]: Without dead ends: 1912 [2020-08-18 22:39:20,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 22:39:20,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2020-08-18 22:39:20,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1606. [2020-08-18 22:39:20,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-18 22:39:20,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1936 transitions. [2020-08-18 22:39:20,436 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1936 transitions. Word has length 97 [2020-08-18 22:39:20,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:39:20,439 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 1936 transitions. [2020-08-18 22:39:20,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 22:39:20,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1936 transitions. [2020-08-18 22:39:20,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-18 22:39:20,444 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:39:20,445 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:39:20,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 22:39:20,445 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:39:20,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:39:20,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1477147143, now seen corresponding path program 1 times [2020-08-18 22:39:20,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:39:20,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465901840] [2020-08-18 22:39:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:39:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:20,758 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:39:20,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:20,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:39:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:20,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:20,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:39:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:20,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:39:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:20,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:39:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:20,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:39:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:20,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 22:39:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:20,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:20,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:20,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:39:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:20,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:20,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:20,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:20,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:39:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:20,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:39:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:20,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:20,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 22:39:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:21,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:21,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 22:39:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:21,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 22:39:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:21,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:21,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:21,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:39:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:21,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:21,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-18 22:39:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:21,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 22:39:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 22:39:21,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465901840] [2020-08-18 22:39:21,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:39:21,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 22:39:21,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993667932] [2020-08-18 22:39:21,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 22:39:21,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:39:21,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 22:39:21,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 22:39:21,108 INFO L87 Difference]: Start difference. First operand 1606 states and 1936 transitions. Second operand 16 states. [2020-08-18 22:39:21,927 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:39:22,269 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 22:39:22,526 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 22:39:22,767 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 22:39:23,456 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:23,743 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:24,090 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 22:39:24,409 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 22:39:25,525 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:26,206 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:26,504 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:26,853 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:39:27,427 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:27,829 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:39:28,222 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 22:39:29,012 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:39:29,317 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 22:39:30,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:39:30,106 INFO L93 Difference]: Finished difference Result 3483 states and 4326 transitions. [2020-08-18 22:39:30,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-18 22:39:30,107 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 159 [2020-08-18 22:39:30,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:39:30,118 INFO L225 Difference]: With dead ends: 3483 [2020-08-18 22:39:30,119 INFO L226 Difference]: Without dead ends: 2085 [2020-08-18 22:39:30,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-18 22:39:30,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2020-08-18 22:39:30,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 1893. [2020-08-18 22:39:30,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1893 states. [2020-08-18 22:39:30,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2238 transitions. [2020-08-18 22:39:30,599 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2238 transitions. Word has length 159 [2020-08-18 22:39:30,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:39:30,600 INFO L479 AbstractCegarLoop]: Abstraction has 1893 states and 2238 transitions. [2020-08-18 22:39:30,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 22:39:30,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2238 transitions. [2020-08-18 22:39:30,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-08-18 22:39:30,608 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:39:30,609 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 22:39:30,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 22:39:30,609 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:39:30,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:39:30,610 INFO L82 PathProgramCache]: Analyzing trace with hash 430621663, now seen corresponding path program 1 times [2020-08-18 22:39:30,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:39:30,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300359733] [2020-08-18 22:39:30,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:39:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:30,917 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:39:30,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:30,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:39:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:30,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:30,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:39:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:30,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:39:30,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:30,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:39:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:30,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:39:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:30,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 22:39:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:30,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:30,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:39:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:39:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:39:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 22:39:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 22:39:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:39:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:39:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-18 22:39:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 22:39:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:39:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 22:39:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 22:39:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-18 22:39:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:39:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-08-18 22:39:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-18 22:39:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 83 proven. 29 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-08-18 22:39:31,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300359733] [2020-08-18 22:39:31,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:39:31,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 22:39:31,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109231650] [2020-08-18 22:39:31,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 22:39:31,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:39:31,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 22:39:31,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 22:39:31,413 INFO L87 Difference]: Start difference. First operand 1893 states and 2238 transitions. Second operand 15 states. [2020-08-18 22:39:32,819 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:33,113 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:39:33,349 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:39:33,588 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:34,581 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:39:36,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:39:36,423 INFO L93 Difference]: Finished difference Result 5185 states and 6381 transitions. [2020-08-18 22:39:36,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 22:39:36,428 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 277 [2020-08-18 22:39:36,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:39:36,447 INFO L225 Difference]: With dead ends: 5185 [2020-08-18 22:39:36,448 INFO L226 Difference]: Without dead ends: 3002 [2020-08-18 22:39:36,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 97 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-18 22:39:36,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2020-08-18 22:39:36,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 2604. [2020-08-18 22:39:36,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2604 states. [2020-08-18 22:39:36,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 3157 transitions. [2020-08-18 22:39:36,967 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 3157 transitions. Word has length 277 [2020-08-18 22:39:36,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:39:36,967 INFO L479 AbstractCegarLoop]: Abstraction has 2604 states and 3157 transitions. [2020-08-18 22:39:36,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 22:39:36,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 3157 transitions. [2020-08-18 22:39:36,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-08-18 22:39:36,978 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:39:36,978 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:39:36,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 22:39:36,979 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:39:36,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:39:36,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1375191224, now seen corresponding path program 1 times [2020-08-18 22:39:36,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:39:36,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607188106] [2020-08-18 22:39:36,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:39:37,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,292 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:39:37,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:39:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:39:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:39:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:39:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:39:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 22:39:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:39:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:39:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:39:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 22:39:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 22:39:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:39:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:39:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 22:39:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-18 22:39:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 22:39:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:39:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 22:39:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 22:39:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-18 22:39:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-08-18 22:39:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:39:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-08-18 22:39:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-08-18 22:39:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:37,655 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 91 proven. 36 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-08-18 22:39:37,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607188106] [2020-08-18 22:39:37,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:39:37,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 22:39:37,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100488511] [2020-08-18 22:39:37,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 22:39:37,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:39:37,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 22:39:37,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 22:39:37,661 INFO L87 Difference]: Start difference. First operand 2604 states and 3157 transitions. Second operand 16 states. [2020-08-18 22:39:38,311 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:38,620 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:39:38,868 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:39:39,146 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:39:39,846 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:40,831 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:41,149 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:41,401 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:42,031 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:42,889 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:43,136 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:44,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:39:44,016 INFO L93 Difference]: Finished difference Result 4984 states and 6131 transitions. [2020-08-18 22:39:44,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 22:39:44,017 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 287 [2020-08-18 22:39:44,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:39:44,033 INFO L225 Difference]: With dead ends: 4984 [2020-08-18 22:39:44,033 INFO L226 Difference]: Without dead ends: 2611 [2020-08-18 22:39:44,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-18 22:39:44,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2020-08-18 22:39:44,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2535. [2020-08-18 22:39:44,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2535 states. [2020-08-18 22:39:44,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 3048 transitions. [2020-08-18 22:39:44,582 INFO L78 Accepts]: Start accepts. Automaton has 2535 states and 3048 transitions. Word has length 287 [2020-08-18 22:39:44,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:39:44,583 INFO L479 AbstractCegarLoop]: Abstraction has 2535 states and 3048 transitions. [2020-08-18 22:39:44,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 22:39:44,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2535 states and 3048 transitions. [2020-08-18 22:39:44,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-08-18 22:39:44,594 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:39:44,595 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:39:44,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 22:39:44,595 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:39:44,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:39:44,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1258456098, now seen corresponding path program 1 times [2020-08-18 22:39:44,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:39:44,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268780123] [2020-08-18 22:39:44,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:39:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:44,910 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:39:44,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:44,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:39:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:44,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:44,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:39:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:44,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:39:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:44,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:39:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:44,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:39:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:44,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 22:39:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:44,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:44,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:44,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:39:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:44,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:39:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:39:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 22:39:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 22:39:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:39:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:39:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 22:39:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 22:39:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 22:39:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:39:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 22:39:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-18 22:39:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-18 22:39:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-18 22:39:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:39:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-18 22:39:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-08-18 22:39:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:45,213 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2020-08-18 22:39:45,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268780123] [2020-08-18 22:39:45,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:39:45,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 22:39:45,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873320877] [2020-08-18 22:39:45,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 22:39:45,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:39:45,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 22:39:45,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 22:39:45,217 INFO L87 Difference]: Start difference. First operand 2535 states and 3048 transitions. Second operand 11 states.