/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:38:55,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:38:55,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:38:55,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:38:55,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:38:55,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:38:55,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:38:55,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:38:55,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:38:55,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:38:55,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:38:55,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:38:55,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:38:55,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:38:55,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:38:55,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:38:55,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:38:55,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:38:55,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:38:55,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:38:55,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:38:55,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:38:55,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:38:55,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:38:55,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:38:55,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:38:55,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:38:55,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:38:55,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:38:55,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:38:55,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:38:55,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:38:55,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:38:55,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:38:55,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:38:55,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:38:55,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:38:55,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:38:55,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:38:55,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:38:55,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:38:55,662 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 [2020-08-19 02:38:55,684 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:38:55,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:38:55,686 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:38:55,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:38:55,686 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:38:55,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:38:55,687 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:38:55,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:38:55,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:38:55,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:38:55,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:38:55,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:38:55,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:38:55,688 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:38:55,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:38:55,688 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:38:55,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:38:55,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:38:55,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:38:55,689 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:38:55,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:38:55,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:38:55,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:38:55,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:38:55,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:38:55,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:38:55,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:38:55,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:38:55,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:38:55,691 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=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:38:56,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:38:56,057 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:38:56,063 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:38:56,065 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:38:56,067 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:38:56,068 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2020-08-19 02:38:56,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1ce0c2d3/a31a49d8db304534ba9b2513b2f1489d/FLAG06daa8b1c [2020-08-19 02:38:56,674 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:38:56,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2020-08-19 02:38:56,688 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1ce0c2d3/a31a49d8db304534ba9b2513b2f1489d/FLAG06daa8b1c [2020-08-19 02:38:56,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1ce0c2d3/a31a49d8db304534ba9b2513b2f1489d [2020-08-19 02:38:56,985 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:38:56,987 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:38:56,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:38:56,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:38:56,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:38:56,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:38:56" (1/1) ... [2020-08-19 02:38:56,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2970dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:38:56, skipping insertion in model container [2020-08-19 02:38:56,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:38:56" (1/1) ... [2020-08-19 02:38:57,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:38:57,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:38:57,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:38:57,493 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:38:57,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:38:57,637 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:38:57,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:38:57 WrapperNode [2020-08-19 02:38:57,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:38:57,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:38:57,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:38:57,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:38:57,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:38:57" (1/1) ... [2020-08-19 02:38:57,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:38:57" (1/1) ... [2020-08-19 02:38:57,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:38:57" (1/1) ... [2020-08-19 02:38:57,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:38:57" (1/1) ... [2020-08-19 02:38:57,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:38:57" (1/1) ... [2020-08-19 02:38:57,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:38:57" (1/1) ... [2020-08-19 02:38:57,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:38:57" (1/1) ... [2020-08-19 02:38:57,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:38:57,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:38:57,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:38:57,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:38:57,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:38:57" (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 [2020-08-19 02:38:57,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:38:57,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:38:57,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 02:38:57,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 02:38:57,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 02:38:57,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 02:38:57,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 02:38:57,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 02:38:57,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 02:38:57,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 02:38:57,833 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 02:38:57,833 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 02:38:57,833 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 02:38:57,834 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 02:38:57,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:38:57,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 02:38:57,834 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 02:38:57,834 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 02:38:57,834 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 02:38:57,835 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 02:38:57,835 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 02:38:57,835 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 02:38:57,835 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 02:38:57,835 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 02:38:57,835 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 02:38:57,836 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 02:38:57,836 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 02:38:57,836 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 02:38:57,836 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 02:38:57,836 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 02:38:57,836 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:38:57,837 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 02:38:57,837 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 02:38:57,837 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 02:38:57,837 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 02:38:57,837 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 02:38:57,837 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 02:38:57,837 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 02:38:57,838 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 02:38:57,838 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 02:38:57,838 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 02:38:57,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:38:57,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:38:57,838 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 02:38:57,838 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 02:38:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:38:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:38:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 02:38:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:38:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:38:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:38:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:38:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 02:38:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:38:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 02:38:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 02:38:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:38:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 02:38:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 02:38:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:38:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 02:38:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 02:38:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 02:38:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 02:38:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 02:38:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 02:38:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 02:38:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 02:38:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 02:38:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 02:38:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 02:38:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 02:38:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 02:38:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 02:38:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 02:38:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 02:38:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 02:38:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:38:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 02:38:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 02:38:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 02:38:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 02:38:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 02:38:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 02:38:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 02:38:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 02:38:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 02:38:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 02:38:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 02:38:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 02:38:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:38:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 02:38:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 02:38:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:38:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:38:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:38:58,929 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:38:58,930 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 02:38:58,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:38:58 BoogieIcfgContainer [2020-08-19 02:38:58,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:38:58,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:38:58,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:38:58,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:38:58,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:38:56" (1/3) ... [2020-08-19 02:38:58,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644ef787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:38:58, skipping insertion in model container [2020-08-19 02:38:58,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:38:57" (2/3) ... [2020-08-19 02:38:58,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644ef787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:38:58, skipping insertion in model container [2020-08-19 02:38:58,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:38:58" (3/3) ... [2020-08-19 02:38:58,945 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product50.cil.c [2020-08-19 02:38:58,955 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:38:58,964 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:38:58,978 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:38:59,006 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:38:59,006 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:38:59,006 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:38:59,006 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:38:59,007 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:38:59,007 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:38:59,007 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:38:59,007 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:38:59,030 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-19 02:38:59,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 02:38:59,040 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:38:59,041 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] [2020-08-19 02:38:59,042 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:38:59,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:38:59,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1488722281, now seen corresponding path program 1 times [2020-08-19 02:38:59,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:38:59,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853585554] [2020-08-19 02:38:59,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:38:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:59,711 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:38:59,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:38:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:59,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:38:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:59,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:38:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:59,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:38:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:59,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:38:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:59,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:38:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:59,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:38:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:59,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:38:59,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853585554] [2020-08-19 02:38:59,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:38:59,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:38:59,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706110848] [2020-08-19 02:38:59,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:38:59,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:38:59,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:38:59,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:38:59,847 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 3 states. [2020-08-19 02:39:00,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:00,987 INFO L93 Difference]: Finished difference Result 306 states and 398 transitions. [2020-08-19 02:39:00,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:39:00,989 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 02:39:00,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:01,004 INFO L225 Difference]: With dead ends: 306 [2020-08-19 02:39:01,004 INFO L226 Difference]: Without dead ends: 165 [2020-08-19 02:39:01,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:39:01,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-19 02:39:01,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-08-19 02:39:01,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-19 02:39:01,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2020-08-19 02:39:01,100 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 46 [2020-08-19 02:39:01,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:01,100 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2020-08-19 02:39:01,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:39:01,100 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2020-08-19 02:39:01,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 02:39:01,104 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:01,104 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] [2020-08-19 02:39:01,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:39:01,105 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:01,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:01,105 INFO L82 PathProgramCache]: Analyzing trace with hash 469599371, now seen corresponding path program 1 times [2020-08-19 02:39:01,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:01,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834323108] [2020-08-19 02:39:01,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:01,436 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:01,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:01,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:01,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:01,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:01,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:01,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:39:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:01,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:39:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:01,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:39:01,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834323108] [2020-08-19 02:39:01,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:39:01,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:39:01,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728182103] [2020-08-19 02:39:01,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:39:01,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:01,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:39:01,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:39:01,481 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand 4 states. [2020-08-19 02:39:01,876 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:02,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:02,743 INFO L93 Difference]: Finished difference Result 235 states and 285 transitions. [2020-08-19 02:39:02,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 02:39:02,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 02:39:02,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:02,748 INFO L225 Difference]: With dead ends: 235 [2020-08-19 02:39:02,749 INFO L226 Difference]: Without dead ends: 149 [2020-08-19 02:39:02,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:39:02,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-19 02:39:02,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-19 02:39:02,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 02:39:02,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-08-19 02:39:02,814 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 47 [2020-08-19 02:39:02,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:02,815 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-08-19 02:39:02,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:39:02,816 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-08-19 02:39:02,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 02:39:02,826 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:02,826 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] [2020-08-19 02:39:02,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:39:02,826 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:02,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:02,827 INFO L82 PathProgramCache]: Analyzing trace with hash 305445596, now seen corresponding path program 1 times [2020-08-19 02:39:02,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:02,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263058320] [2020-08-19 02:39:02,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:03,183 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:03,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:03,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:03,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:03,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:03,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:03,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:39:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:03,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:39:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:03,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:39:03,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263058320] [2020-08-19 02:39:03,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:39:03,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:39:03,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6975654] [2020-08-19 02:39:03,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:39:03,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:03,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:39:03,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:39:03,263 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 8 states. [2020-08-19 02:39:03,620 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:03,976 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:04,246 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:04,485 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:05,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:05,730 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2020-08-19 02:39:05,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 02:39:05,731 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-19 02:39:05,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:05,735 INFO L225 Difference]: With dead ends: 248 [2020-08-19 02:39:05,735 INFO L226 Difference]: Without dead ends: 149 [2020-08-19 02:39:05,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:39:05,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-19 02:39:05,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-19 02:39:05,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 02:39:05,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2020-08-19 02:39:05,773 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 52 [2020-08-19 02:39:05,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:05,773 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2020-08-19 02:39:05,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:39:05,774 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2020-08-19 02:39:05,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 02:39:05,775 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:05,775 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] [2020-08-19 02:39:05,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:39:05,776 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:05,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:05,776 INFO L82 PathProgramCache]: Analyzing trace with hash 892474279, now seen corresponding path program 1 times [2020-08-19 02:39:05,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:05,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079475296] [2020-08-19 02:39:05,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:06,033 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:06,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:06,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:06,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:06,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:06,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:06,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:39:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:06,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:06,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:06,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 02:39:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:06,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 02:39:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:06,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:39:06,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079475296] [2020-08-19 02:39:06,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:39:06,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:39:06,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549485559] [2020-08-19 02:39:06,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:39:06,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:06,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:39:06,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:39:06,178 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand 6 states. [2020-08-19 02:39:06,519 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:07,705 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:08,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:08,396 INFO L93 Difference]: Finished difference Result 345 states and 425 transitions. [2020-08-19 02:39:08,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:39:08,397 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-19 02:39:08,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:08,403 INFO L225 Difference]: With dead ends: 345 [2020-08-19 02:39:08,403 INFO L226 Difference]: Without dead ends: 246 [2020-08-19 02:39:08,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:39:08,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-19 02:39:08,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 203. [2020-08-19 02:39:08,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-08-19 02:39:08,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 230 transitions. [2020-08-19 02:39:08,450 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 230 transitions. Word has length 65 [2020-08-19 02:39:08,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:08,450 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 230 transitions. [2020-08-19 02:39:08,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:39:08,451 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 230 transitions. [2020-08-19 02:39:08,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-19 02:39:08,452 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:08,452 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] [2020-08-19 02:39:08,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:39:08,453 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:08,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:08,453 INFO L82 PathProgramCache]: Analyzing trace with hash 861206730, now seen corresponding path program 1 times [2020-08-19 02:39:08,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:08,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290179089] [2020-08-19 02:39:08,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:08,763 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:08,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:08,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:08,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:08,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:08,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:08,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:39:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:08,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:08,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:08,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:08,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:08,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 02:39:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:08,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 02:39:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:08,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:39:08,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290179089] [2020-08-19 02:39:08,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:39:08,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 02:39:08,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364700752] [2020-08-19 02:39:08,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:39:08,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:08,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:39:08,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:39:08,892 INFO L87 Difference]: Start difference. First operand 203 states and 230 transitions. Second operand 12 states. [2020-08-19 02:39:09,537 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:09,851 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:10,100 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:10,333 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:10,904 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:11,793 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:12,080 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:12,314 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:12,602 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:12,876 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:13,129 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:14,482 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:14,819 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:15,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:15,396 INFO L93 Difference]: Finished difference Result 713 states and 919 transitions. [2020-08-19 02:39:15,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 02:39:15,396 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-19 02:39:15,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:15,403 INFO L225 Difference]: With dead ends: 713 [2020-08-19 02:39:15,403 INFO L226 Difference]: Without dead ends: 534 [2020-08-19 02:39:15,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 02:39:15,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-08-19 02:39:15,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 472. [2020-08-19 02:39:15,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-08-19 02:39:15,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 553 transitions. [2020-08-19 02:39:15,500 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 553 transitions. Word has length 79 [2020-08-19 02:39:15,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:15,501 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 553 transitions. [2020-08-19 02:39:15,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:39:15,501 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 553 transitions. [2020-08-19 02:39:15,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-19 02:39:15,505 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:15,505 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:15,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:39:15,506 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:15,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:15,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1327678130, now seen corresponding path program 1 times [2020-08-19 02:39:15,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:15,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335184896] [2020-08-19 02:39:15,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:15,831 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:15,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:15,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:15,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:15,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:15,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:15,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:15,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:39:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:15,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:15,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:15,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:16,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:16,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:16,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:39:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:16,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:16,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 02:39:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:16,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 02:39:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:16,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 02:39:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:16,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:16,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:16,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:16,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 02:39:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:16,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-19 02:39:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-19 02:39:16,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335184896] [2020-08-19 02:39:16,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:16,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 02:39:16,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115011078] [2020-08-19 02:39:16,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 02:39:16,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:16,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 02:39:16,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-19 02:39:16,053 INFO L87 Difference]: Start difference. First operand 472 states and 553 transitions. Second operand 13 states. [2020-08-19 02:39:16,443 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:17,058 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:17,637 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:17,898 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 02:39:18,161 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:18,409 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:18,649 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:18,911 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 02:39:19,207 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:19,480 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:21,005 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:21,238 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:39:21,484 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:21,716 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:22,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:22,147 INFO L93 Difference]: Finished difference Result 957 states and 1212 transitions. [2020-08-19 02:39:22,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-19 02:39:22,148 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 138 [2020-08-19 02:39:22,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:22,153 INFO L225 Difference]: With dead ends: 957 [2020-08-19 02:39:22,153 INFO L226 Difference]: Without dead ends: 509 [2020-08-19 02:39:22,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-19 02:39:22,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-08-19 02:39:22,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 442. [2020-08-19 02:39:22,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-08-19 02:39:22,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 521 transitions. [2020-08-19 02:39:22,240 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 521 transitions. Word has length 138 [2020-08-19 02:39:22,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:22,241 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 521 transitions. [2020-08-19 02:39:22,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 02:39:22,241 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 521 transitions. [2020-08-19 02:39:22,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-19 02:39:22,244 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:22,244 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:22,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:39:22,244 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:22,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:22,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1681399932, now seen corresponding path program 1 times [2020-08-19 02:39:22,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:22,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368246194] [2020-08-19 02:39:22,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,531 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:22,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:39:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:39:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 02:39:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 02:39:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 02:39:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 02:39:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:22,737 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 02:39:22,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368246194] [2020-08-19 02:39:22,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:22,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 02:39:22,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013113745] [2020-08-19 02:39:22,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:39:22,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:22,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:39:22,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:39:22,740 INFO L87 Difference]: Start difference. First operand 442 states and 521 transitions. Second operand 12 states. [2020-08-19 02:39:23,140 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:23,385 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:23,600 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:24,162 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:24,394 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:24,615 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:25,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:25,499 INFO L93 Difference]: Finished difference Result 807 states and 985 transitions. [2020-08-19 02:39:25,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 02:39:25,502 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-19 02:39:25,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:25,505 INFO L225 Difference]: With dead ends: 807 [2020-08-19 02:39:25,505 INFO L226 Difference]: Without dead ends: 389 [2020-08-19 02:39:25,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:39:25,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-08-19 02:39:25,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 363. [2020-08-19 02:39:25,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-08-19 02:39:25,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 425 transitions. [2020-08-19 02:39:25,577 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 425 transitions. Word has length 130 [2020-08-19 02:39:25,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:25,577 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 425 transitions. [2020-08-19 02:39:25,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:39:25,577 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 425 transitions. [2020-08-19 02:39:25,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-19 02:39:25,580 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:25,580 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:25,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:39:25,580 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:25,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:25,581 INFO L82 PathProgramCache]: Analyzing trace with hash 34208085, now seen corresponding path program 1 times [2020-08-19 02:39:25,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:25,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443082078] [2020-08-19 02:39:25,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,821 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:25,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:39:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:39:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 02:39:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 02:39:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 02:39:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-19 02:39:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:26,012 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-19 02:39:26,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443082078] [2020-08-19 02:39:26,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:26,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 02:39:26,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881500569] [2020-08-19 02:39:26,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:39:26,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:26,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:39:26,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:39:26,015 INFO L87 Difference]: Start difference. First operand 363 states and 425 transitions. Second operand 10 states. [2020-08-19 02:39:27,639 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:27,887 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:28,136 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:28,366 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:28,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:28,697 INFO L93 Difference]: Finished difference Result 670 states and 812 transitions. [2020-08-19 02:39:28,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:39:28,704 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-19 02:39:28,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:28,707 INFO L225 Difference]: With dead ends: 670 [2020-08-19 02:39:28,708 INFO L226 Difference]: Without dead ends: 394 [2020-08-19 02:39:28,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:39:28,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-08-19 02:39:28,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 368. [2020-08-19 02:39:28,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-19 02:39:28,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 430 transitions. [2020-08-19 02:39:28,780 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 430 transitions. Word has length 134 [2020-08-19 02:39:28,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:28,780 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 430 transitions. [2020-08-19 02:39:28,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:39:28,781 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 430 transitions. [2020-08-19 02:39:28,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-19 02:39:28,783 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:28,783 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:28,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:39:28,783 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:28,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:28,784 INFO L82 PathProgramCache]: Analyzing trace with hash -475265005, now seen corresponding path program 1 times [2020-08-19 02:39:28,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:28,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059094220] [2020-08-19 02:39:28,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,085 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:29,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:39:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:39:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 02:39:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 02:39:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 02:39:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-19 02:39:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:29,203 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-19 02:39:29,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059094220] [2020-08-19 02:39:29,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:29,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 02:39:29,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098719789] [2020-08-19 02:39:29,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:39:29,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:29,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:39:29,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:39:29,206 INFO L87 Difference]: Start difference. First operand 368 states and 430 transitions. Second operand 10 states. [2020-08-19 02:39:29,652 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:31,106 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:31,371 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:31,602 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:31,824 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:32,117 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:32,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:32,435 INFO L93 Difference]: Finished difference Result 401 states and 482 transitions. [2020-08-19 02:39:32,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 02:39:32,436 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-19 02:39:32,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:32,440 INFO L225 Difference]: With dead ends: 401 [2020-08-19 02:39:32,440 INFO L226 Difference]: Without dead ends: 398 [2020-08-19 02:39:32,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 02:39:32,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-08-19 02:39:32,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 368. [2020-08-19 02:39:32,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-19 02:39:32,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 429 transitions. [2020-08-19 02:39:32,500 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 429 transitions. Word has length 134 [2020-08-19 02:39:32,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:32,501 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 429 transitions. [2020-08-19 02:39:32,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:39:32,501 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 429 transitions. [2020-08-19 02:39:32,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-19 02:39:32,503 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:32,503 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:32,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:39:32,504 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:32,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:32,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1918338429, now seen corresponding path program 1 times [2020-08-19 02:39:32,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:32,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873104034] [2020-08-19 02:39:32,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,805 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:32,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:39:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:39:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 02:39:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 02:39:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 02:39:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-19 02:39:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:32,957 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 02:39:32,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873104034] [2020-08-19 02:39:32,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:32,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 02:39:32,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630566537] [2020-08-19 02:39:32,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:39:32,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:32,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:39:32,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:39:32,959 INFO L87 Difference]: Start difference. First operand 368 states and 429 transitions. Second operand 12 states. [2020-08-19 02:39:33,704 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:34,789 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:35,338 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:35,612 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:35,846 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:36,086 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:36,349 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:36,595 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:38,160 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:38,410 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:39,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:39,088 INFO L93 Difference]: Finished difference Result 881 states and 1104 transitions. [2020-08-19 02:39:39,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 02:39:39,088 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 138 [2020-08-19 02:39:39,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:39,094 INFO L225 Difference]: With dead ends: 881 [2020-08-19 02:39:39,094 INFO L226 Difference]: Without dead ends: 600 [2020-08-19 02:39:39,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-19 02:39:39,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-08-19 02:39:39,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 513. [2020-08-19 02:39:39,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-08-19 02:39:39,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 606 transitions. [2020-08-19 02:39:39,197 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 606 transitions. Word has length 138 [2020-08-19 02:39:39,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:39,198 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 606 transitions. [2020-08-19 02:39:39,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:39:39,198 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 606 transitions. [2020-08-19 02:39:39,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-08-19 02:39:39,201 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:39,202 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:39,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:39:39,202 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:39,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:39,203 INFO L82 PathProgramCache]: Analyzing trace with hash -169355685, now seen corresponding path program 2 times [2020-08-19 02:39:39,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:39,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735273555] [2020-08-19 02:39:39,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,527 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:39,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:39:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:39:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 02:39:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:39:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-19 02:39:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-19 02:39:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-08-19 02:39:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-19 02:39:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-19 02:39:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,831 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 39 proven. 22 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-19 02:39:39,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735273555] [2020-08-19 02:39:39,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:39,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 02:39:39,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332355082] [2020-08-19 02:39:39,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 02:39:39,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:39,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 02:39:39,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:39:39,836 INFO L87 Difference]: Start difference. First operand 513 states and 606 transitions. Second operand 14 states. [2020-08-19 02:39:40,283 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:40,912 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:41,825 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:42,126 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:42,384 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:42,635 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:42,896 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:43,122 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:44,332 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:44,584 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:45,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:45,690 INFO L93 Difference]: Finished difference Result 1240 states and 1606 transitions. [2020-08-19 02:39:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-19 02:39:45,691 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 196 [2020-08-19 02:39:45,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:45,697 INFO L225 Difference]: With dead ends: 1240 [2020-08-19 02:39:45,698 INFO L226 Difference]: Without dead ends: 814 [2020-08-19 02:39:45,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2020-08-19 02:39:45,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2020-08-19 02:39:45,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 511. [2020-08-19 02:39:45,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-19 02:39:45,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 603 transitions. [2020-08-19 02:39:45,808 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 603 transitions. Word has length 196 [2020-08-19 02:39:45,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:45,809 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 603 transitions. [2020-08-19 02:39:45,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 02:39:45,809 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 603 transitions. [2020-08-19 02:39:45,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-19 02:39:45,815 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:45,815 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:45,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 02:39:45,816 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:45,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:45,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1150491295, now seen corresponding path program 3 times [2020-08-19 02:39:45,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:45,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338441478] [2020-08-19 02:39:45,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,126 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:46,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:39:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:39:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 02:39:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:39:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-19 02:39:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 02:39:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-19 02:39:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 02:39:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:46,478 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-19 02:39:46,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338441478] [2020-08-19 02:39:46,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:46,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 02:39:46,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752137919] [2020-08-19 02:39:46,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 02:39:46,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:46,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 02:39:46,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-19 02:39:46,488 INFO L87 Difference]: Start difference. First operand 511 states and 603 transitions. Second operand 13 states. [2020-08-19 02:39:47,609 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:47,884 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:49,363 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:39:49,633 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:49,878 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:50,311 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-19 02:39:51,880 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-19 02:39:52,140 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 02:39:52,430 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:39:52,697 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:39:53,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:53,680 INFO L93 Difference]: Finished difference Result 1408 states and 1753 transitions. [2020-08-19 02:39:53,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-19 02:39:53,681 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 192 [2020-08-19 02:39:53,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:53,688 INFO L225 Difference]: With dead ends: 1408 [2020-08-19 02:39:53,688 INFO L226 Difference]: Without dead ends: 982 [2020-08-19 02:39:53,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 74 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=299, Invalid=961, Unknown=0, NotChecked=0, Total=1260 [2020-08-19 02:39:53,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2020-08-19 02:39:53,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 833. [2020-08-19 02:39:53,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2020-08-19 02:39:53,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 968 transitions. [2020-08-19 02:39:53,885 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 968 transitions. Word has length 192 [2020-08-19 02:39:53,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:53,888 INFO L479 AbstractCegarLoop]: Abstraction has 833 states and 968 transitions. [2020-08-19 02:39:53,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 02:39:53,888 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 968 transitions. [2020-08-19 02:39:53,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-19 02:39:53,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:53,892 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:53,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 02:39:53,892 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:53,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:53,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1185901215, now seen corresponding path program 1 times [2020-08-19 02:39:53,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:53,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69694730] [2020-08-19 02:39:53,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,163 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:54,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:39:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:39:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 02:39:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:39:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-19 02:39:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 02:39:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-19 02:39:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 02:39:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:54,390 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 8 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-08-19 02:39:54,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69694730] [2020-08-19 02:39:54,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:54,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 02:39:54,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713090257] [2020-08-19 02:39:54,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 02:39:54,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:54,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 02:39:54,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-19 02:39:54,393 INFO L87 Difference]: Start difference. First operand 833 states and 968 transitions. Second operand 13 states. [2020-08-19 02:39:54,914 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:55,172 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:55,410 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187