/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:12:53,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:12:53,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:12:53,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:12:53,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:12:53,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:12:53,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:12:53,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:12:53,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:12:53,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:12:53,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:12:53,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:12:53,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:12:53,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:12:53,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:12:53,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:12:53,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:12:53,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:12:53,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:12:53,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:12:53,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:12:53,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:12:53,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:12:53,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:12:53,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:12:53,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:12:53,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:12:53,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:12:53,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:12:53,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:12:53,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:12:53,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:12:53,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:12:53,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:12:53,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:12:53,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:12:53,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:12:53,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:12:53,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:12:53,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:12:53,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:12:53,687 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 [2020-08-22 01:12:53,728 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:12:53,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:12:53,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:12:53,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:12:53,731 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:12:53,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:12:53,732 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:12:53,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:12:53,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:12:53,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:12:53,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:12:53,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:12:53,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:12:53,734 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:12:53,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:12:53,734 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:12:53,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:12:53,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:12:53,735 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:12:53,735 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:12:53,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:12:53,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:12:53,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:12:53,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:12:53,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:12:53,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:12:53,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:12:53,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:12:53,737 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:12:53,737 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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:12:54,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:12:54,142 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:12:54,148 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:12:54,149 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:12:54,150 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:12:54,150 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c [2020-08-22 01:12:54,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6da9d57fb/bbf251fcdf204669ac93a0cd9f967513/FLAGb831fc8e0 [2020-08-22 01:12:54,762 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:12:54,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c [2020-08-22 01:12:54,799 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6da9d57fb/bbf251fcdf204669ac93a0cd9f967513/FLAGb831fc8e0 [2020-08-22 01:12:55,208 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6da9d57fb/bbf251fcdf204669ac93a0cd9f967513 [2020-08-22 01:12:55,234 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:12:55,236 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:12:55,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:12:55,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:12:55,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:12:55,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:12:55" (1/1) ... [2020-08-22 01:12:55,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20abf48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:12:55, skipping insertion in model container [2020-08-22 01:12:55,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:12:55" (1/1) ... [2020-08-22 01:12:55,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:12:55,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:12:55,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:12:55,973 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:12:56,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:12:56,090 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:12:56,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:12:56 WrapperNode [2020-08-22 01:12:56,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:12:56,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:12:56,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:12:56,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:12:56,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:12:56" (1/1) ... [2020-08-22 01:12:56,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:12:56" (1/1) ... [2020-08-22 01:12:56,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:12:56" (1/1) ... [2020-08-22 01:12:56,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:12:56" (1/1) ... [2020-08-22 01:12:56,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:12:56" (1/1) ... [2020-08-22 01:12:56,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:12:56" (1/1) ... [2020-08-22 01:12:56,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:12:56" (1/1) ... [2020-08-22 01:12:56,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:12:56,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:12:56,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:12:56,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:12:56,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:12:56" (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 [2020-08-22 01:12:56,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:12:56,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:12:56,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 01:12:56,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-22 01:12:56,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-22 01:12:56,283 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 01:12:56,283 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 01:12:56,283 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 01:12:56,283 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 01:12:56,284 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 01:12:56,284 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 01:12:56,284 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 01:12:56,284 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 01:12:56,284 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 01:12:56,284 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 01:12:56,285 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 01:12:56,285 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 01:12:56,285 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 01:12:56,285 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 01:12:56,286 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 01:12:56,286 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 01:12:56,286 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 01:12:56,286 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 01:12:56,286 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 01:12:56,286 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 01:12:56,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 01:12:56,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 01:12:56,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 01:12:56,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 01:12:56,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 01:12:56,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 01:12:56,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 01:12:56,288 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 01:12:56,288 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 01:12:56,288 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 01:12:56,288 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 01:12:56,288 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:12:56,289 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 01:12:56,289 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 01:12:56,289 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 01:12:56,289 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 01:12:56,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:12:56,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:12:56,289 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 01:12:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 01:12:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 01:12:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 01:12:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-22 01:12:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-22 01:12:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 01:12:56,291 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 01:12:56,291 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 01:12:56,291 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 01:12:56,291 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 01:12:56,291 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 01:12:56,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 01:12:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 01:12:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 01:12:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 01:12:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 01:12:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 01:12:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 01:12:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 01:12:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 01:12:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 01:12:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 01:12:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 01:12:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 01:12:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 01:12:56,294 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 01:12:56,294 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 01:12:56,294 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 01:12:56,294 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 01:12:56,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 01:12:56,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 01:12:56,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 01:12:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 01:12:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 01:12:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:12:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 01:12:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 01:12:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 01:12:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 01:12:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 01:12:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 01:12:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 01:12:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 01:12:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 01:12:56,297 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 01:12:56,297 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 01:12:56,297 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 01:12:56,297 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:12:56,297 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 01:12:56,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:12:56,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 01:12:56,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:12:57,421 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:12:57,421 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 01:12:57,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:12:57 BoogieIcfgContainer [2020-08-22 01:12:57,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:12:57,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:12:57,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:12:57,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:12:57,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:12:55" (1/3) ... [2020-08-22 01:12:57,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf94953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:12:57, skipping insertion in model container [2020-08-22 01:12:57,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:12:56" (2/3) ... [2020-08-22 01:12:57,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf94953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:12:57, skipping insertion in model container [2020-08-22 01:12:57,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:12:57" (3/3) ... [2020-08-22 01:12:57,440 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product40.cil.c [2020-08-22 01:12:57,451 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:12:57,462 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:12:57,479 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:12:57,508 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:12:57,508 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:12:57,509 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:12:57,509 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:12:57,509 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:12:57,509 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:12:57,509 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:12:57,510 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:12:57,531 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-08-22 01:12:57,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 01:12:57,542 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:12:57,543 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] [2020-08-22 01:12:57,543 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:12:57,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:12:57,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1292486909, now seen corresponding path program 1 times [2020-08-22 01:12:57,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:12:57,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982594856] [2020-08-22 01:12:57,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:12:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:12:58,246 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:12:58,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:12:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:12:58,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:12:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:12:58,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:12:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:12:58,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:12:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:12:58,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:12:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:12:58,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:12:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:12:58,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 01:12:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:12:58,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 01:12:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:12:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:12:58,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982594856] [2020-08-22 01:12:58,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:12:58,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 01:12:58,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774549605] [2020-08-22 01:12:58,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 01:12:58,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:12:58,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 01:12:58,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:12:58,388 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 4 states. [2020-08-22 01:12:59,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:12:59,639 INFO L93 Difference]: Finished difference Result 311 states and 408 transitions. [2020-08-22 01:12:59,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 01:12:59,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-22 01:12:59,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:12:59,657 INFO L225 Difference]: With dead ends: 311 [2020-08-22 01:12:59,658 INFO L226 Difference]: Without dead ends: 174 [2020-08-22 01:12:59,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:12:59,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-22 01:12:59,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 138. [2020-08-22 01:12:59,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-22 01:12:59,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 163 transitions. [2020-08-22 01:12:59,762 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 163 transitions. Word has length 51 [2020-08-22 01:12:59,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:12:59,763 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 163 transitions. [2020-08-22 01:12:59,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 01:12:59,764 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 163 transitions. [2020-08-22 01:12:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 01:12:59,768 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:12:59,768 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] [2020-08-22 01:12:59,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:12:59,769 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:12:59,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:12:59,769 INFO L82 PathProgramCache]: Analyzing trace with hash -11798802, now seen corresponding path program 1 times [2020-08-22 01:12:59,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:12:59,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249440668] [2020-08-22 01:12:59,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:12:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:00,172 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:13:00,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:13:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:00,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:13:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:00,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:13:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:00,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:13:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:00,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:13:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:00,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:13:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:00,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:13:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:00,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 01:13:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:00,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:13:00,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249440668] [2020-08-22 01:13:00,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:13:00,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:13:00,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999485306] [2020-08-22 01:13:00,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:13:00,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:13:00,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:13:00,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:13:00,232 INFO L87 Difference]: Start difference. First operand 138 states and 163 transitions. Second operand 5 states. [2020-08-22 01:13:00,721 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:13:01,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:13:01,722 INFO L93 Difference]: Finished difference Result 246 states and 307 transitions. [2020-08-22 01:13:01,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 01:13:01,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-22 01:13:01,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:13:01,726 INFO L225 Difference]: With dead ends: 246 [2020-08-22 01:13:01,727 INFO L226 Difference]: Without dead ends: 164 [2020-08-22 01:13:01,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:13:01,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-22 01:13:01,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 129. [2020-08-22 01:13:01,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-22 01:13:01,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 151 transitions. [2020-08-22 01:13:01,775 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 151 transitions. Word has length 52 [2020-08-22 01:13:01,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:13:01,775 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 151 transitions. [2020-08-22 01:13:01,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:13:01,776 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 151 transitions. [2020-08-22 01:13:01,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 01:13:01,778 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:13:01,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:13:01,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:13:01,779 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:13:01,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:13:01,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1490469892, now seen corresponding path program 1 times [2020-08-22 01:13:01,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:13:01,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345324741] [2020-08-22 01:13:01,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:13:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:02,137 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:13:02,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:13:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:02,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:13:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:02,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:13:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:02,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:13:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:02,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:13:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:02,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:13:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:02,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 01:13:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:02,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 01:13:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:02,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:13:02,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345324741] [2020-08-22 01:13:02,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:13:02,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:13:02,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48174767] [2020-08-22 01:13:02,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:13:02,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:13:02,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:13:02,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:13:02,260 INFO L87 Difference]: Start difference. First operand 129 states and 151 transitions. Second operand 9 states. [2020-08-22 01:13:02,620 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:13:02,939 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:13:03,230 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:13:03,472 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:13:04,277 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:13:06,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:13:06,283 INFO L93 Difference]: Finished difference Result 439 states and 556 transitions. [2020-08-22 01:13:06,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 01:13:06,286 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-22 01:13:06,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:13:06,292 INFO L225 Difference]: With dead ends: 439 [2020-08-22 01:13:06,293 INFO L226 Difference]: Without dead ends: 338 [2020-08-22 01:13:06,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-22 01:13:06,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-08-22 01:13:06,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 269. [2020-08-22 01:13:06,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-08-22 01:13:06,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 328 transitions. [2020-08-22 01:13:06,376 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 328 transitions. Word has length 57 [2020-08-22 01:13:06,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:13:06,377 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 328 transitions. [2020-08-22 01:13:06,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:13:06,377 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 328 transitions. [2020-08-22 01:13:06,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 01:13:06,380 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:13:06,380 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] [2020-08-22 01:13:06,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:13:06,381 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:13:06,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:13:06,381 INFO L82 PathProgramCache]: Analyzing trace with hash -512554003, now seen corresponding path program 1 times [2020-08-22 01:13:06,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:13:06,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681748559] [2020-08-22 01:13:06,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:13:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:06,718 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:13:06,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:13:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:06,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:13:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:06,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:13:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:06,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:13:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:06,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:13:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:06,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:13:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:06,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:13:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:06,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 01:13:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:06,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 01:13:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:06,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:13:06,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681748559] [2020-08-22 01:13:06,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:13:06,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:13:06,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649008656] [2020-08-22 01:13:06,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:13:06,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:13:06,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:13:06,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:13:06,847 INFO L87 Difference]: Start difference. First operand 269 states and 328 transitions. Second operand 9 states. [2020-08-22 01:13:07,239 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:13:08,435 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:13:08,801 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:13:09,037 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:13:09,319 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:13:10,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:13:10,846 INFO L93 Difference]: Finished difference Result 864 states and 1152 transitions. [2020-08-22 01:13:10,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 01:13:10,847 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-22 01:13:10,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:13:10,853 INFO L225 Difference]: With dead ends: 864 [2020-08-22 01:13:10,853 INFO L226 Difference]: Without dead ends: 623 [2020-08-22 01:13:10,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-22 01:13:10,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-22 01:13:10,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 486. [2020-08-22 01:13:10,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-08-22 01:13:10,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 596 transitions. [2020-08-22 01:13:10,988 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 596 transitions. Word has length 62 [2020-08-22 01:13:10,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:13:10,989 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 596 transitions. [2020-08-22 01:13:10,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:13:10,989 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 596 transitions. [2020-08-22 01:13:10,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 01:13:10,993 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:13:10,993 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] [2020-08-22 01:13:10,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:13:10,993 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:13:10,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:13:10,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1361940215, now seen corresponding path program 1 times [2020-08-22 01:13:10,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:13:10,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310796116] [2020-08-22 01:13:10,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:13:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:11,369 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:13:11,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:13:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:11,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:13:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:11,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:13:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:11,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:13:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:11,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:13:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:11,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:13:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:11,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 01:13:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:11,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 01:13:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:11,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 01:13:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:11,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 01:13:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:11,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:13:11,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310796116] [2020-08-22 01:13:11,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:13:11,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 01:13:11,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115036320] [2020-08-22 01:13:11,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:13:11,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:13:11,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:13:11,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:13:11,491 INFO L87 Difference]: Start difference. First operand 486 states and 596 transitions. Second operand 10 states. [2020-08-22 01:13:11,948 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:13:13,096 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:13:13,446 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:13:13,724 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:13:14,412 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:13:15,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:13:15,768 INFO L93 Difference]: Finished difference Result 1373 states and 1890 transitions. [2020-08-22 01:13:15,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 01:13:15,768 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-22 01:13:15,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:13:15,776 INFO L225 Difference]: With dead ends: 1373 [2020-08-22 01:13:15,776 INFO L226 Difference]: Without dead ends: 915 [2020-08-22 01:13:15,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-22 01:13:15,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2020-08-22 01:13:15,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 709. [2020-08-22 01:13:15,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-08-22 01:13:15,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 863 transitions. [2020-08-22 01:13:15,934 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 863 transitions. Word has length 66 [2020-08-22 01:13:15,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:13:15,934 INFO L479 AbstractCegarLoop]: Abstraction has 709 states and 863 transitions. [2020-08-22 01:13:15,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:13:15,935 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 863 transitions. [2020-08-22 01:13:15,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 01:13:15,937 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:13:15,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:13:15,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:13:15,938 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:13:15,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:13:15,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1572074791, now seen corresponding path program 1 times [2020-08-22 01:13:15,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:13:15,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843446212] [2020-08-22 01:13:15,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:13:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:16,255 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:13:16,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:13:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:16,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:13:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:16,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:13:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:16,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:13:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:16,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:13:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:16,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:13:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:16,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 01:13:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:16,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 01:13:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:16,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:13:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:16,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:13:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:16,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:13:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:16,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:13:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:16,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 01:13:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:16,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 01:13:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:16,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:13:16,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843446212] [2020-08-22 01:13:16,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:13:16,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 01:13:16,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262494003] [2020-08-22 01:13:16,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:13:16,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:13:16,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:13:16,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:13:16,463 INFO L87 Difference]: Start difference. First operand 709 states and 863 transitions. Second operand 10 states. [2020-08-22 01:13:16,903 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:13:18,088 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:13:18,351 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 01:13:18,632 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:13:18,896 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:13:20,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:13:20,842 INFO L93 Difference]: Finished difference Result 2413 states and 3450 transitions. [2020-08-22 01:13:20,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 01:13:20,843 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-22 01:13:20,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:13:20,858 INFO L225 Difference]: With dead ends: 2413 [2020-08-22 01:13:20,859 INFO L226 Difference]: Without dead ends: 1732 [2020-08-22 01:13:20,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-22 01:13:20,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2020-08-22 01:13:21,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1279. [2020-08-22 01:13:21,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-08-22 01:13:21,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1554 transitions. [2020-08-22 01:13:21,323 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1554 transitions. Word has length 89 [2020-08-22 01:13:21,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:13:21,324 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 1554 transitions. [2020-08-22 01:13:21,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:13:21,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1554 transitions. [2020-08-22 01:13:21,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 01:13:21,328 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:13:21,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:13:21,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 01:13:21,328 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:13:21,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:13:21,329 INFO L82 PathProgramCache]: Analyzing trace with hash -153406106, now seen corresponding path program 1 times [2020-08-22 01:13:21,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:13:21,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316657254] [2020-08-22 01:13:21,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:13:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:21,632 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:13:21,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:13:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:21,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:13:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:21,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:13:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:21,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:13:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:21,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:13:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:21,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:13:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:21,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 01:13:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:21,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 01:13:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:21,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:13:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:21,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:13:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:21,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:13:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:21,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:13:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:21,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 01:13:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:21,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 01:13:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:21,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:13:21,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316657254] [2020-08-22 01:13:21,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:13:21,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 01:13:21,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441163527] [2020-08-22 01:13:21,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:13:21,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:13:21,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:13:21,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:13:21,805 INFO L87 Difference]: Start difference. First operand 1279 states and 1554 transitions. Second operand 10 states. [2020-08-22 01:13:22,969 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:13:23,220 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 01:13:23,512 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:13:23,821 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:13:25,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:13:25,272 INFO L93 Difference]: Finished difference Result 2983 states and 3988 transitions. [2020-08-22 01:13:25,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 01:13:25,273 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-22 01:13:25,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:13:25,293 INFO L225 Difference]: With dead ends: 2983 [2020-08-22 01:13:25,293 INFO L226 Difference]: Without dead ends: 1732 [2020-08-22 01:13:25,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-22 01:13:25,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2020-08-22 01:13:25,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1319. [2020-08-22 01:13:25,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-08-22 01:13:25,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1594 transitions. [2020-08-22 01:13:25,711 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1594 transitions. Word has length 89 [2020-08-22 01:13:25,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:13:25,712 INFO L479 AbstractCegarLoop]: Abstraction has 1319 states and 1594 transitions. [2020-08-22 01:13:25,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:13:25,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1594 transitions. [2020-08-22 01:13:25,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 01:13:25,716 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:13:25,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:13:25,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 01:13:25,717 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:13:25,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:13:25,717 INFO L82 PathProgramCache]: Analyzing trace with hash 548193768, now seen corresponding path program 1 times [2020-08-22 01:13:25,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:13:25,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125173955] [2020-08-22 01:13:25,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:13:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:26,021 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:13:26,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:13:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:26,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:13:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:26,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:13:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:26,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:13:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:26,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:13:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:26,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:13:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:26,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 01:13:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:26,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 01:13:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:26,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:13:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:26,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:13:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:26,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:13:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:26,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:13:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:26,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 01:13:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:26,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 01:13:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:13:26,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125173955] [2020-08-22 01:13:26,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:13:26,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 01:13:26,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386673607] [2020-08-22 01:13:26,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 01:13:26,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:13:26,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 01:13:26,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:13:26,188 INFO L87 Difference]: Start difference. First operand 1319 states and 1594 transitions. Second operand 12 states. [2020-08-22 01:13:26,817 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:13:27,106 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:13:27,351 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:13:28,224 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:13:28,532 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:13:28,831 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:13:30,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:13:30,267 INFO L93 Difference]: Finished difference Result 2667 states and 3530 transitions. [2020-08-22 01:13:30,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 01:13:30,268 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2020-08-22 01:13:30,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:13:30,279 INFO L225 Difference]: With dead ends: 2667 [2020-08-22 01:13:30,279 INFO L226 Difference]: Without dead ends: 1376 [2020-08-22 01:13:30,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-22 01:13:30,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-08-22 01:13:30,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1087. [2020-08-22 01:13:30,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1087 states. [2020-08-22 01:13:30,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1282 transitions. [2020-08-22 01:13:30,516 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1282 transitions. Word has length 89 [2020-08-22 01:13:30,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:13:30,516 INFO L479 AbstractCegarLoop]: Abstraction has 1087 states and 1282 transitions. [2020-08-22 01:13:30,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 01:13:30,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1282 transitions. [2020-08-22 01:13:30,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 01:13:30,520 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:13:30,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:13:30,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 01:13:30,521 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:13:30,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:13:30,521 INFO L82 PathProgramCache]: Analyzing trace with hash 81932175, now seen corresponding path program 1 times [2020-08-22 01:13:30,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:13:30,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563451941] [2020-08-22 01:13:30,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:13:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:30,902 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:13:30,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:13:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:30,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:13:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:30,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:13:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:30,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:13:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:30,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:13:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:30,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:13:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:30,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:13:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:30,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:13:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:30,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 01:13:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:31,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:13:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:31,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:13:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:31,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:13:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:31,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:13:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:31,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 01:13:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:31,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 01:13:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:31,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:13:31,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563451941] [2020-08-22 01:13:31,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:13:31,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 01:13:31,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648744915] [2020-08-22 01:13:31,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:13:31,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:13:31,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:13:31,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:13:31,044 INFO L87 Difference]: Start difference. First operand 1087 states and 1282 transitions. Second operand 8 states. [2020-08-22 01:13:31,529 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:13:34,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:13:34,402 INFO L93 Difference]: Finished difference Result 2185 states and 2908 transitions. [2020-08-22 01:13:34,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 01:13:34,403 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-22 01:13:34,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:13:34,417 INFO L225 Difference]: With dead ends: 2185 [2020-08-22 01:13:34,417 INFO L226 Difference]: Without dead ends: 2182 [2020-08-22 01:13:34,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-22 01:13:34,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2182 states. [2020-08-22 01:13:34,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2182 to 1684. [2020-08-22 01:13:34,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1684 states. [2020-08-22 01:13:34,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2013 transitions. [2020-08-22 01:13:34,757 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2013 transitions. Word has length 93 [2020-08-22 01:13:34,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:13:34,763 INFO L479 AbstractCegarLoop]: Abstraction has 1684 states and 2013 transitions. [2020-08-22 01:13:34,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:13:34,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2013 transitions. [2020-08-22 01:13:34,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 01:13:34,772 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:13:34,772 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:13:34,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 01:13:34,773 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:13:34,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:13:34,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1581752101, now seen corresponding path program 1 times [2020-08-22 01:13:34,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:13:34,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723303274] [2020-08-22 01:13:34,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:13:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,059 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:13:35,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:13:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:13:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:13:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:13:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:13:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:13:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:13:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:13:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 01:13:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:13:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:13:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:13:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:13:35,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:13:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:13:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:13:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 01:13:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 01:13:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 01:13:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:13:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:13:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 01:13:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:13:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 01:13:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 01:13:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:35,302 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-22 01:13:35,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723303274] [2020-08-22 01:13:35,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:13:35,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 01:13:35,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970052465] [2020-08-22 01:13:35,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:13:35,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:13:35,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:13:35,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:13:35,305 INFO L87 Difference]: Start difference. First operand 1684 states and 2013 transitions. Second operand 10 states. [2020-08-22 01:13:36,453 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:13:38,584 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:13:39,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:13:39,636 INFO L93 Difference]: Finished difference Result 5021 states and 6634 transitions. [2020-08-22 01:13:39,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 01:13:39,641 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-08-22 01:13:39,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:13:39,665 INFO L225 Difference]: With dead ends: 5021 [2020-08-22 01:13:39,665 INFO L226 Difference]: Without dead ends: 3689 [2020-08-22 01:13:39,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 62 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 01:13:39,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3689 states. [2020-08-22 01:13:40,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3689 to 3132. [2020-08-22 01:13:40,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3132 states. [2020-08-22 01:13:40,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 3769 transitions. [2020-08-22 01:13:40,388 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 3769 transitions. Word has length 152 [2020-08-22 01:13:40,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:13:40,388 INFO L479 AbstractCegarLoop]: Abstraction has 3132 states and 3769 transitions. [2020-08-22 01:13:40,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:13:40,388 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 3769 transitions. [2020-08-22 01:13:40,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 01:13:40,401 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:13:40,402 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:13:40,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 01:13:40,403 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:13:40,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:13:40,403 INFO L82 PathProgramCache]: Analyzing trace with hash 688265763, now seen corresponding path program 1 times [2020-08-22 01:13:40,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:13:40,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916863831] [2020-08-22 01:13:40,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:13:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,724 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:13:40,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:13:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:13:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:13:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:13:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:13:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:13:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:13:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:13:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 01:13:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:13:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:13:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:13:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:13:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:13:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:13:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:13:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 01:13:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 01:13:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 01:13:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:13:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:13:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 01:13:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:13:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 01:13:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:40,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 01:13:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:41,030 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-22 01:13:41,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916863831] [2020-08-22 01:13:41,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:13:41,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 01:13:41,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061870105] [2020-08-22 01:13:41,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 01:13:41,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:13:41,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 01:13:41,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-22 01:13:41,033 INFO L87 Difference]: Start difference. First operand 3132 states and 3769 transitions. Second operand 19 states. [2020-08-22 01:13:42,271 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:13:42,721 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:13:42,998 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:13:43,241 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:13:43,998 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:13:44,666 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:13:45,080 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:13:47,754 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:13:48,012 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:13:48,317 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:13:48,610 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:13:48,869 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:13:49,185 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:13:49,465 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:13:49,707 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:13:50,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:13:50,931 INFO L93 Difference]: Finished difference Result 6032 states and 7600 transitions. [2020-08-22 01:13:50,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-22 01:13:50,933 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 152 [2020-08-22 01:13:50,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:13:50,953 INFO L225 Difference]: With dead ends: 6032 [2020-08-22 01:13:50,954 INFO L226 Difference]: Without dead ends: 2928 [2020-08-22 01:13:50,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=608, Invalid=2814, Unknown=0, NotChecked=0, Total=3422 [2020-08-22 01:13:50,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-08-22 01:13:51,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2436. [2020-08-22 01:13:51,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2436 states. [2020-08-22 01:13:51,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2436 states to 2436 states and 2848 transitions. [2020-08-22 01:13:51,557 INFO L78 Accepts]: Start accepts. Automaton has 2436 states and 2848 transitions. Word has length 152 [2020-08-22 01:13:51,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:13:51,558 INFO L479 AbstractCegarLoop]: Abstraction has 2436 states and 2848 transitions. [2020-08-22 01:13:51,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 01:13:51,558 INFO L276 IsEmpty]: Start isEmpty. Operand 2436 states and 2848 transitions. [2020-08-22 01:13:51,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-22 01:13:51,568 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:13:51,568 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, 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] [2020-08-22 01:13:51,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 01:13:51,569 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:13:51,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:13:51,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1034293868, now seen corresponding path program 1 times [2020-08-22 01:13:51,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:13:51,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333028642] [2020-08-22 01:13:51,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:13:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:51,972 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:13:51,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:13:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:51,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:13:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:51,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:13:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:51,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:13:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:52,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:13:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:52,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:13:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:52,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:13:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:52,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:13:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:52,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 01:13:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:52,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:13:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:52,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:13:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:52,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:13:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:52,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:13:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:52,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:13:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:52,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:13:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:52,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:13:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:52,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 01:13:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:52,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 01:13:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:52,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 01:13:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:52,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:13:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:52,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:13:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:52,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:13:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:52,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:13:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:52,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 01:13:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:52,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-22 01:13:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:13:52,193 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-22 01:13:52,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333028642] [2020-08-22 01:13:52,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:13:52,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 01:13:52,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877778534] [2020-08-22 01:13:52,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 01:13:52,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:13:52,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 01:13:52,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-22 01:13:52,196 INFO L87 Difference]: Start difference. First operand 2436 states and 2848 transitions. Second operand 14 states.