/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=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 11:58:45,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:58:45,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:58:45,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:58:45,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:58:45,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:58:45,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:58:45,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:58:45,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:58:45,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:58:45,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:58:45,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:58:45,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:58:45,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:58:45,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:58:45,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:58:45,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:58:45,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:58:45,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:58:45,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:58:45,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:58:45,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:58:45,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:58:45,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:58:45,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:58:45,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:58:45,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:58:45,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:58:45,626 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:58:45,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:58:45,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:58:45,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:58:45,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:58:45,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:58:45,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:58:45,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:58:45,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:58:45,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:58:45,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:58:45,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:58:45,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:58:45,640 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 11:58:45,669 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:58:45,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:58:45,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:58:45,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:58:45,671 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:58:45,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:58:45,672 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 11:58:45,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:58:45,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 11:58:45,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:58:45,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:58:45,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:58:45,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:58:45,673 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 11:58:45,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:58:45,673 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:58:45,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:58:45,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:58:45,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:58:45,674 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:58:45,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:58:45,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:58:45,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:58:45,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:58:45,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:58:45,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:58:45,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:58:45,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:58:45,676 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:58:45,676 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 11:58:45,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:58:45,984 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:58:45,988 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:58:45,989 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:58:45,989 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:58:45,990 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2020-08-18 11:58:46,047 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f10ab093f/f193729dee9745ed8cd23c39831bc3fa/FLAGe7479545f [2020-08-18 11:58:46,531 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:58:46,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2020-08-18 11:58:46,564 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f10ab093f/f193729dee9745ed8cd23c39831bc3fa/FLAGe7479545f [2020-08-18 11:58:46,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f10ab093f/f193729dee9745ed8cd23c39831bc3fa [2020-08-18 11:58:46,825 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:58:46,827 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:58:46,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:58:46,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:58:46,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:58:46,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:58:46" (1/1) ... [2020-08-18 11:58:46,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@389f1ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:46, skipping insertion in model container [2020-08-18 11:58:46,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:58:46" (1/1) ... [2020-08-18 11:58:46,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:58:46,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:58:47,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:58:47,345 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:58:47,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:58:47,482 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:58:47,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:47 WrapperNode [2020-08-18 11:58:47,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:58:47,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:58:47,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:58:47,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:58:47,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:47" (1/1) ... [2020-08-18 11:58:47,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:47" (1/1) ... [2020-08-18 11:58:47,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:47" (1/1) ... [2020-08-18 11:58:47,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:47" (1/1) ... [2020-08-18 11:58:47,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:47" (1/1) ... [2020-08-18 11:58:47,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:47" (1/1) ... [2020-08-18 11:58:47,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:47" (1/1) ... [2020-08-18 11:58:47,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:58:47,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:58:47,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:58:47,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:58:47,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:47" (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 11:58:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:58:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:58:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 11:58:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 11:58:47,639 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 11:58:47,639 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 11:58:47,639 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 11:58:47,639 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 11:58:47,639 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 11:58:47,639 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 11:58:47,640 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 11:58:47,640 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 11:58:47,640 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 11:58:47,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 11:58:47,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 11:58:47,640 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 11:58:47,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 11:58:47,641 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 11:58:47,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 11:58:47,641 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 11:58:47,641 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 11:58:47,641 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 11:58:47,641 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 11:58:47,642 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 11:58:47,642 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 11:58:47,642 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 11:58:47,642 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 11:58:47,642 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 11:58:47,642 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 11:58:47,643 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 11:58:47,643 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:58:47,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 11:58:47,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 11:58:47,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 11:58:47,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 11:58:47,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 11:58:47,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 11:58:47,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 11:58:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:58:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:58:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 11:58:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 11:58:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 11:58:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 11:58:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 11:58:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 11:58:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 11:58:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 11:58:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 11:58:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 11:58:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 11:58:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 11:58:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 11:58:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 11:58:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 11:58:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 11:58:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 11:58:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 11:58:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 11:58:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 11:58:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:58:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 11:58:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 11:58:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 11:58:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 11:58:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 11:58:47,649 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 11:58:47,649 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 11:58:47,649 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 11:58:47,649 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 11:58:47,649 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:58:47,649 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 11:58:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:58:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:58:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 11:58:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:58:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:58:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:58:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:58:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 11:58:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:58:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 11:58:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 11:58:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:58:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 11:58:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 11:58:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 11:58:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:58:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:58:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:58:48,745 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:58:48,746 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 11:58:48,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:58:48 BoogieIcfgContainer [2020-08-18 11:58:48,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:58:48,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:58:48,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:58:48,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:58:48,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:58:46" (1/3) ... [2020-08-18 11:58:48,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb74ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:58:48, skipping insertion in model container [2020-08-18 11:58:48,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:47" (2/3) ... [2020-08-18 11:58:48,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb74ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:58:48, skipping insertion in model container [2020-08-18 11:58:48,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:58:48" (3/3) ... [2020-08-18 11:58:48,766 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product41.cil.c [2020-08-18 11:58:48,776 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:58:48,784 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:58:48,798 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:58:48,830 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:58:48,830 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:58:48,831 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:58:48,831 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:58:48,831 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:58:48,831 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:58:48,831 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:58:48,832 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:58:48,859 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-08-18 11:58:48,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 11:58:48,874 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:48,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:58:48,876 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:48,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:48,881 INFO L82 PathProgramCache]: Analyzing trace with hash 177325019, now seen corresponding path program 1 times [2020-08-18 11:58:48,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:48,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836150470] [2020-08-18 11:58:48,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:49,509 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:58:49,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:58:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:49,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:58:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:49,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:58:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:49,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:49,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:58:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:49,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:58:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:49,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:58:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:49,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:58:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:49,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:58:49,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836150470] [2020-08-18 11:58:49,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:58:49,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 11:58:49,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280171430] [2020-08-18 11:58:49,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 11:58:49,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:58:49,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 11:58:49,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 11:58:49,640 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-08-18 11:58:50,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:50,723 INFO L93 Difference]: Finished difference Result 287 states and 375 transitions. [2020-08-18 11:58:50,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 11:58:50,726 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 11:58:50,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:50,740 INFO L225 Difference]: With dead ends: 287 [2020-08-18 11:58:50,740 INFO L226 Difference]: Without dead ends: 155 [2020-08-18 11:58:50,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 11:58:50,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-18 11:58:50,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-18 11:58:50,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 11:58:50,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2020-08-18 11:58:50,829 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 52 [2020-08-18 11:58:50,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:50,829 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2020-08-18 11:58:50,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 11:58:50,830 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2020-08-18 11:58:50,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 11:58:50,833 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:50,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:58:50,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:58:50,834 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:50,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:50,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1842882407, now seen corresponding path program 1 times [2020-08-18 11:58:50,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:50,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101487092] [2020-08-18 11:58:50,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:51,160 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:58:51,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:58:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:51,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:58:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:51,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:58:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:51,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:51,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:58:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:51,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 11:58:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:51,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:58:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:51,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 11:58:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:51,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:58:51,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101487092] [2020-08-18 11:58:51,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:58:51,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:58:51,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691262781] [2020-08-18 11:58:51,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:58:51,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:58:51,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:58:51,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:58:51,210 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand 4 states. [2020-08-18 11:58:51,612 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:58:52,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:52,294 INFO L93 Difference]: Finished difference Result 220 states and 266 transitions. [2020-08-18 11:58:52,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 11:58:52,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 11:58:52,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:52,303 INFO L225 Difference]: With dead ends: 220 [2020-08-18 11:58:52,304 INFO L226 Difference]: Without dead ends: 139 [2020-08-18 11:58:52,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:58:52,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-18 11:58:52,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-18 11:58:52,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-18 11:58:52,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2020-08-18 11:58:52,359 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 53 [2020-08-18 11:58:52,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:52,360 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2020-08-18 11:58:52,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:58:52,360 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2020-08-18 11:58:52,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 11:58:52,366 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:52,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:58:52,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:58:52,367 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:52,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:52,367 INFO L82 PathProgramCache]: Analyzing trace with hash 774651483, now seen corresponding path program 1 times [2020-08-18 11:58:52,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:52,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479044442] [2020-08-18 11:58:52,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:52,754 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:58:52,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:58:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:52,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:58:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:52,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:58:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:52,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:52,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:58:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:52,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 11:58:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:52,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 11:58:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:52,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 11:58:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:52,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:58:52,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479044442] [2020-08-18 11:58:52,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:58:52,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:58:52,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044983085] [2020-08-18 11:58:52,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:58:52,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:58:52,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:58:52,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:58:52,835 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand 8 states. [2020-08-18 11:58:53,211 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:58:53,520 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:58:53,772 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:58:53,996 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:58:54,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:54,989 INFO L93 Difference]: Finished difference Result 229 states and 280 transitions. [2020-08-18 11:58:54,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 11:58:54,989 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 11:58:54,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:54,994 INFO L225 Difference]: With dead ends: 229 [2020-08-18 11:58:54,995 INFO L226 Difference]: Without dead ends: 139 [2020-08-18 11:58:54,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 11:58:54,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-18 11:58:55,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-18 11:58:55,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-18 11:58:55,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2020-08-18 11:58:55,050 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 57 [2020-08-18 11:58:55,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:55,051 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2020-08-18 11:58:55,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:58:55,051 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2020-08-18 11:58:55,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 11:58:55,059 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:55,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:58:55,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:58:55,059 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:55,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:55,060 INFO L82 PathProgramCache]: Analyzing trace with hash -771193848, now seen corresponding path program 1 times [2020-08-18 11:58:55,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:55,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155968288] [2020-08-18 11:58:55,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:55,366 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:58:55,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:58:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:55,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:58:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:55,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:58:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:55,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:55,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:58:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:55,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 11:58:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:55,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:55,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 11:58:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:55,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 11:58:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:55,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 11:58:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:55,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:58:55,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155968288] [2020-08-18 11:58:55,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:58:55,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:58:55,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773871522] [2020-08-18 11:58:55,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:58:55,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:58:55,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:58:55,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:58:55,440 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 6 states. [2020-08-18 11:58:55,817 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:58:56,837 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:58:57,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:57,402 INFO L93 Difference]: Finished difference Result 324 states and 398 transitions. [2020-08-18 11:58:57,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 11:58:57,403 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-18 11:58:57,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:57,409 INFO L225 Difference]: With dead ends: 324 [2020-08-18 11:58:57,409 INFO L226 Difference]: Without dead ends: 234 [2020-08-18 11:58:57,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 11:58:57,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-08-18 11:58:57,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 193. [2020-08-18 11:58:57,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-08-18 11:58:57,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 222 transitions. [2020-08-18 11:58:57,480 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 222 transitions. Word has length 65 [2020-08-18 11:58:57,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:57,480 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 222 transitions. [2020-08-18 11:58:57,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 11:58:57,481 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 222 transitions. [2020-08-18 11:58:57,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 11:58:57,483 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:57,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:58:57,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:58:57,484 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:57,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:57,485 INFO L82 PathProgramCache]: Analyzing trace with hash -913158347, now seen corresponding path program 1 times [2020-08-18 11:58:57,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:57,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634481370] [2020-08-18 11:58:57,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:57,756 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:58:57,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:58:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:57,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:58:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:57,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:58:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:57,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:57,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:58:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:57,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 11:58:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:57,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:57,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:58:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:57,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:58:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:57,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 11:58:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:57,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 11:58:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:57,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 11:58:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:58:57,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634481370] [2020-08-18 11:58:57,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:58:57,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:58:57,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387919765] [2020-08-18 11:58:57,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:58:57,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:58:57,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:58:57,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:58:57,861 INFO L87 Difference]: Start difference. First operand 193 states and 222 transitions. Second operand 8 states. [2020-08-18 11:58:58,265 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:58:59,496 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:58:59,769 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:59:00,008 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:59:00,224 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:59:00,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:59:00,799 INFO L93 Difference]: Finished difference Result 528 states and 662 transitions. [2020-08-18 11:59:00,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 11:59:00,800 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-18 11:59:00,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:59:00,805 INFO L225 Difference]: With dead ends: 528 [2020-08-18 11:59:00,805 INFO L226 Difference]: Without dead ends: 359 [2020-08-18 11:59:00,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 11:59:00,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-08-18 11:59:00,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 319. [2020-08-18 11:59:00,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-08-18 11:59:00,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 373 transitions. [2020-08-18 11:59:00,914 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 373 transitions. Word has length 79 [2020-08-18 11:59:00,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:59:00,915 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 373 transitions. [2020-08-18 11:59:00,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:59:00,916 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 373 transitions. [2020-08-18 11:59:00,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 11:59:00,917 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:59:00,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:59:00,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 11:59:00,918 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:59:00,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:59:00,918 INFO L82 PathProgramCache]: Analyzing trace with hash 421166267, now seen corresponding path program 1 times [2020-08-18 11:59:00,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:59:00,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173474142] [2020-08-18 11:59:00,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:59:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:01,193 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:59:01,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:59:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:01,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:59:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:01,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:59:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:01,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:59:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:01,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:59:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:01,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 11:59:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:01,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:59:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:01,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:59:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:01,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:59:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:01,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:59:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:01,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 11:59:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:01,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 11:59:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:01,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 11:59:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:01,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:59:01,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173474142] [2020-08-18 11:59:01,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:59:01,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 11:59:01,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289742611] [2020-08-18 11:59:01,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:59:01,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:59:01,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:59:01,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:59:01,299 INFO L87 Difference]: Start difference. First operand 319 states and 373 transitions. Second operand 9 states. [2020-08-18 11:59:01,671 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:59:02,168 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:59:03,573 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:59:04,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:59:04,931 INFO L93 Difference]: Finished difference Result 770 states and 989 transitions. [2020-08-18 11:59:04,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 11:59:04,932 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-18 11:59:04,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:59:04,937 INFO L225 Difference]: With dead ends: 770 [2020-08-18 11:59:04,938 INFO L226 Difference]: Without dead ends: 590 [2020-08-18 11:59:04,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-18 11:59:04,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-08-18 11:59:05,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 524. [2020-08-18 11:59:05,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-18 11:59:05,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 634 transitions. [2020-08-18 11:59:05,042 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 634 transitions. Word has length 83 [2020-08-18 11:59:05,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:59:05,043 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 634 transitions. [2020-08-18 11:59:05,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:59:05,043 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 634 transitions. [2020-08-18 11:59:05,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 11:59:05,044 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:59:05,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:59:05,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 11:59:05,045 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:59:05,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:59:05,045 INFO L82 PathProgramCache]: Analyzing trace with hash 750932028, now seen corresponding path program 1 times [2020-08-18 11:59:05,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:59:05,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830150965] [2020-08-18 11:59:05,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:59:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:05,319 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:59:05,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:59:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:05,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:59:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:05,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:59:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:05,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:59:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:05,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:59:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:05,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 11:59:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:05,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:59:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:05,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:59:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:05,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:59:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:05,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:59:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:05,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 11:59:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:05,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 11:59:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:05,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 11:59:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:05,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:59:05,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830150965] [2020-08-18 11:59:05,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:59:05,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:59:05,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082922067] [2020-08-18 11:59:05,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:59:05,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:59:05,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:59:05,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:59:05,449 INFO L87 Difference]: Start difference. First operand 524 states and 634 transitions. Second operand 8 states. [2020-08-18 11:59:06,265 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:59:06,475 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:59:06,707 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:59:07,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:59:07,562 INFO L93 Difference]: Finished difference Result 947 states and 1187 transitions. [2020-08-18 11:59:07,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 11:59:07,563 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-08-18 11:59:07,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:59:07,567 INFO L225 Difference]: With dead ends: 947 [2020-08-18 11:59:07,567 INFO L226 Difference]: Without dead ends: 566 [2020-08-18 11:59:07,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-18 11:59:07,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2020-08-18 11:59:07,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 524. [2020-08-18 11:59:07,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-18 11:59:07,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 633 transitions. [2020-08-18 11:59:07,658 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 633 transitions. Word has length 83 [2020-08-18 11:59:07,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:59:07,658 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 633 transitions. [2020-08-18 11:59:07,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:59:07,659 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 633 transitions. [2020-08-18 11:59:07,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 11:59:07,660 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:59:07,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:59:07,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 11:59:07,660 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:59:07,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:59:07,661 INFO L82 PathProgramCache]: Analyzing trace with hash 678545470, now seen corresponding path program 1 times [2020-08-18 11:59:07,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:59:07,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488268659] [2020-08-18 11:59:07,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:59:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:07,892 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:59:07,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:59:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:07,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:59:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:07,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:59:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:07,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:59:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:07,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:59:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:07,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 11:59:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:07,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:59:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:07,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:59:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:08,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:59:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:08,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:59:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:08,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 11:59:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:08,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 11:59:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:08,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 11:59:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:08,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:59:08,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488268659] [2020-08-18 11:59:08,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:59:08,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 11:59:08,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552352420] [2020-08-18 11:59:08,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 11:59:08,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:59:08,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 11:59:08,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 11:59:08,046 INFO L87 Difference]: Start difference. First operand 524 states and 633 transitions. Second operand 12 states. [2020-08-18 11:59:08,716 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:59:08,950 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:59:09,178 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:59:09,768 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:59:09,993 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:59:10,250 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:59:10,471 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:59:11,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:59:11,503 INFO L93 Difference]: Finished difference Result 1071 states and 1335 transitions. [2020-08-18 11:59:11,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 11:59:11,504 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-08-18 11:59:11,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:59:11,509 INFO L225 Difference]: With dead ends: 1071 [2020-08-18 11:59:11,509 INFO L226 Difference]: Without dead ends: 571 [2020-08-18 11:59:11,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-18 11:59:11,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-08-18 11:59:11,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 531. [2020-08-18 11:59:11,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-08-18 11:59:11,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 640 transitions. [2020-08-18 11:59:11,619 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 640 transitions. Word has length 83 [2020-08-18 11:59:11,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:59:11,620 INFO L479 AbstractCegarLoop]: Abstraction has 531 states and 640 transitions. [2020-08-18 11:59:11,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 11:59:11,620 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 640 transitions. [2020-08-18 11:59:11,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-18 11:59:11,622 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:59:11,623 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] [2020-08-18 11:59:11,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 11:59:11,623 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:59:11,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:59:11,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1174041569, now seen corresponding path program 1 times [2020-08-18 11:59:11,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:59:11,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362116948] [2020-08-18 11:59:11,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:59:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:11,879 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:59:11,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:59:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:11,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:59:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:11,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:59:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:11,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:59:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:11,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:59:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:11,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 11:59:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:11,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:59:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:11,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:59:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:11,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:59:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:11,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:59:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:12,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:59:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:12,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:59:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:12,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 11:59:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:12,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 11:59:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:12,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 11:59:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:12,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 11:59:12,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362116948] [2020-08-18 11:59:12,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:59:12,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 11:59:12,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945035885] [2020-08-18 11:59:12,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 11:59:12,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:59:12,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 11:59:12,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 11:59:12,134 INFO L87 Difference]: Start difference. First operand 531 states and 640 transitions. Second operand 12 states. [2020-08-18 11:59:12,627 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:59:13,277 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:59:14,006 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:59:14,315 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:59:14,592 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:59:14,831 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:59:15,102 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:59:15,368 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:59:15,825 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-18 11:59:16,067 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:59:16,341 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:59:16,616 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 11:59:18,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:59:18,545 INFO L93 Difference]: Finished difference Result 1563 states and 1960 transitions. [2020-08-18 11:59:18,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 11:59:18,546 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 95 [2020-08-18 11:59:18,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:59:18,553 INFO L225 Difference]: With dead ends: 1563 [2020-08-18 11:59:18,553 INFO L226 Difference]: Without dead ends: 1056 [2020-08-18 11:59:18,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-08-18 11:59:18,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2020-08-18 11:59:18,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 998. [2020-08-18 11:59:18,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 998 states. [2020-08-18 11:59:18,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1189 transitions. [2020-08-18 11:59:18,748 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1189 transitions. Word has length 95 [2020-08-18 11:59:18,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:59:18,749 INFO L479 AbstractCegarLoop]: Abstraction has 998 states and 1189 transitions. [2020-08-18 11:59:18,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 11:59:18,749 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1189 transitions. [2020-08-18 11:59:18,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-18 11:59:18,753 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:59:18,754 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, 1, 1] [2020-08-18 11:59:18,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 11:59:18,754 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:59:18,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:59:18,755 INFO L82 PathProgramCache]: Analyzing trace with hash 175480453, now seen corresponding path program 1 times [2020-08-18 11:59:18,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:59:18,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838722528] [2020-08-18 11:59:18,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:59:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:19,119 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:59:19,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:59:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:19,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:59:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:19,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:59:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:19,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:59:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:19,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:59:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:19,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 11:59:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:19,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 11:59:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:19,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 11:59:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:19,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:59:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:19,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:59:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:19,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:59:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:19,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:59:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:19,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:59:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:19,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 11:59:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:19,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 11:59:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:19,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 11:59:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:19,293 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 11:59:19,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838722528] [2020-08-18 11:59:19,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:59:19,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-18 11:59:19,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279606604] [2020-08-18 11:59:19,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 11:59:19,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:59:19,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 11:59:19,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-18 11:59:19,300 INFO L87 Difference]: Start difference. First operand 998 states and 1189 transitions. Second operand 14 states. [2020-08-18 11:59:20,171 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:59:20,515 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:59:20,840 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:59:21,445 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:59:22,115 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:59:22,454 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:59:23,000 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:59:23,251 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:59:23,503 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:59:24,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:59:24,946 INFO L93 Difference]: Finished difference Result 2050 states and 2569 transitions. [2020-08-18 11:59:24,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 11:59:24,947 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 99 [2020-08-18 11:59:24,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:59:24,953 INFO L225 Difference]: With dead ends: 2050 [2020-08-18 11:59:24,954 INFO L226 Difference]: Without dead ends: 1076 [2020-08-18 11:59:24,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2020-08-18 11:59:24,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2020-08-18 11:59:25,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 914. [2020-08-18 11:59:25,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914 states. [2020-08-18 11:59:25,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1085 transitions. [2020-08-18 11:59:25,157 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1085 transitions. Word has length 99 [2020-08-18 11:59:25,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:59:25,158 INFO L479 AbstractCegarLoop]: Abstraction has 914 states and 1085 transitions. [2020-08-18 11:59:25,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 11:59:25,159 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1085 transitions. [2020-08-18 11:59:25,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-18 11:59:25,161 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:59:25,161 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, 1, 1] [2020-08-18 11:59:25,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 11:59:25,162 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:59:25,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:59:25,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1676429373, now seen corresponding path program 1 times [2020-08-18 11:59:25,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:59:25,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662350595] [2020-08-18 11:59:25,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:59:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:25,492 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:59:25,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:59:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:25,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:59:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:25,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:59:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:25,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:59:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:25,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:59:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:25,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 11:59:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:25,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:59:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:25,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:59:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:25,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:59:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:25,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:59:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:25,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:59:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:25,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:59:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:25,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:59:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:25,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 11:59:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:25,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 11:59:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:25,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 11:59:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:25,644 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 11:59:25,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662350595] [2020-08-18 11:59:25,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:59:25,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 11:59:25,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055900769] [2020-08-18 11:59:25,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 11:59:25,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:59:25,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 11:59:25,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-18 11:59:25,647 INFO L87 Difference]: Start difference. First operand 914 states and 1085 transitions. Second operand 13 states. [2020-08-18 11:59:26,443 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:59:26,784 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:59:27,099 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:59:28,013 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:59:28,499 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:59:28,800 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:59:29,061 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:59:29,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:59:29,686 INFO L93 Difference]: Finished difference Result 1575 states and 1874 transitions. [2020-08-18 11:59:29,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 11:59:29,687 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 99 [2020-08-18 11:59:29,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:59:29,688 INFO L225 Difference]: With dead ends: 1575 [2020-08-18 11:59:29,688 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 11:59:29,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-08-18 11:59:29,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 11:59:29,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 11:59:29,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 11:59:29,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 11:59:29,694 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 99 [2020-08-18 11:59:29,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:59:29,694 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 11:59:29,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 11:59:29,694 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 11:59:29,694 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 11:59:29,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 11:59:29,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 11:59:30,695 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 248 [2020-08-18 11:59:32,025 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 244 [2020-08-18 11:59:32,386 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 248 [2020-08-18 11:59:34,000 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 244 [2020-08-18 11:59:35,008 WARN L193 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-18 11:59:36,131 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 162 DAG size of output: 30 [2020-08-18 11:59:36,904 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 39 [2020-08-18 11:59:37,062 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-18 11:59:37,223 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-18 11:59:37,388 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-08-18 11:59:38,019 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 33 [2020-08-18 11:59:39,149 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 170 DAG size of output: 38 [2020-08-18 11:59:39,719 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 30 [2020-08-18 11:59:39,893 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 1 [2020-08-18 11:59:40,052 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-18 11:59:40,643 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 30 [2020-08-18 11:59:41,390 WARN L193 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 38 [2020-08-18 11:59:41,551 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-18 11:59:41,749 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:59:41,901 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-18 11:59:42,682 WARN L193 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 39 [2020-08-18 11:59:42,947 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 23 [2020-08-18 11:59:43,108 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1 [2020-08-18 11:59:44,292 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2020-08-18 11:59:44,464 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 1