/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:26:08,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:26:08,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:26:08,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:26:08,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:26:08,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:26:08,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:26:08,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:26:08,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:26:08,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:26:08,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:26:08,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:26:08,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:26:08,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:26:08,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:26:08,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:26:08,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:26:08,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:26:08,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:26:08,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:26:08,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:26:08,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:26:08,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:26:08,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:26:08,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:26:08,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:26:08,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:26:08,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:26:08,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:26:08,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:26:08,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:26:08,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:26:08,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:26:08,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:26:08,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:26:08,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:26:08,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:26:08,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:26:08,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:26:08,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:26:08,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:26:08,401 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 23:26:08,424 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:26:08,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:26:08,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:26:08,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:26:08,426 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:26:08,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:26:08,427 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:26:08,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:26:08,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:26:08,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:26:08,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:26:08,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:26:08,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:26:08,428 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:26:08,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:26:08,428 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:26:08,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:26:08,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:26:08,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:26:08,429 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:26:08,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:26:08,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:26:08,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:26:08,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:26:08,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:26:08,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:26:08,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:26:08,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:26:08,431 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:26:08,431 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:26:08,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:26:08,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:26:08,740 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:26:08,742 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:26:08,742 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:26:08,743 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c [2020-08-18 23:26:08,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6aa2d2384/43540c338ca6467d9170e36836f54683/FLAG34fbe863b [2020-08-18 23:26:09,333 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:26:09,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c [2020-08-18 23:26:09,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6aa2d2384/43540c338ca6467d9170e36836f54683/FLAG34fbe863b [2020-08-18 23:26:09,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6aa2d2384/43540c338ca6467d9170e36836f54683 [2020-08-18 23:26:09,609 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:26:09,611 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:26:09,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:26:09,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:26:09,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:26:09,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:26:09" (1/1) ... [2020-08-18 23:26:09,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29125003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:26:09, skipping insertion in model container [2020-08-18 23:26:09,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:26:09" (1/1) ... [2020-08-18 23:26:09,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:26:09,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:26:10,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:26:10,146 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:26:10,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:26:10,250 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:26:10,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:26:10 WrapperNode [2020-08-18 23:26:10,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:26:10,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:26:10,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:26:10,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:26:10,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:26:10" (1/1) ... [2020-08-18 23:26:10,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:26:10" (1/1) ... [2020-08-18 23:26:10,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:26:10" (1/1) ... [2020-08-18 23:26:10,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:26:10" (1/1) ... [2020-08-18 23:26:10,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:26:10" (1/1) ... [2020-08-18 23:26:10,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:26:10" (1/1) ... [2020-08-18 23:26:10,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:26:10" (1/1) ... [2020-08-18 23:26:10,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:26:10,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:26:10,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:26:10,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:26:10,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:26:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:26:10,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:26:10,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:26:10,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 23:26:10,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 23:26:10,443 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 23:26:10,443 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 23:26:10,443 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 23:26:10,443 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 23:26:10,443 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:26:10,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 23:26:10,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 23:26:10,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 23:26:10,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 23:26:10,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 23:26:10,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 23:26:10,444 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 23:26:10,445 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 23:26:10,445 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 23:26:10,445 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 23:26:10,445 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 23:26:10,445 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 23:26:10,445 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 23:26:10,446 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 23:26:10,446 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 23:26:10,446 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 23:26:10,446 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 23:26:10,446 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 23:26:10,446 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 23:26:10,447 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 23:26:10,447 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 23:26:10,447 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 23:26:10,447 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 23:26:10,447 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 23:26:10,447 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 23:26:10,447 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 23:26:10,448 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 23:26:10,448 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 23:26:10,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 23:26:10,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 23:26:10,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 23:26:10,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:26:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 23:26:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 23:26:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 23:26:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 23:26:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 23:26:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 23:26:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 23:26:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 23:26:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 23:26:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 23:26:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 23:26:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 23:26:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 23:26:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 23:26:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 23:26:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 23:26:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:26:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 23:26:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 23:26:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 23:26:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 23:26:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 23:26:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 23:26:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 23:26:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 23:26:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 23:26:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 23:26:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 23:26:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 23:26:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 23:26:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 23:26:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 23:26:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 23:26:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 23:26:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 23:26:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 23:26:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 23:26:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 23:26:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 23:26:10,455 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 23:26:10,455 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 23:26:10,455 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 23:26:10,455 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 23:26:10,455 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 23:26:10,455 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 23:26:10,456 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 23:26:10,456 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 23:26:10,456 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 23:26:10,456 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 23:26:10,456 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 23:26:10,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:26:10,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 23:26:10,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:26:11,504 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:26:11,505 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 23:26:11,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:26:11 BoogieIcfgContainer [2020-08-18 23:26:11,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:26:11,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:26:11,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:26:11,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:26:11,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:26:09" (1/3) ... [2020-08-18 23:26:11,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9109be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:26:11, skipping insertion in model container [2020-08-18 23:26:11,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:26:10" (2/3) ... [2020-08-18 23:26:11,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9109be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:26:11, skipping insertion in model container [2020-08-18 23:26:11,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:26:11" (3/3) ... [2020-08-18 23:26:11,518 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product35.cil.c [2020-08-18 23:26:11,528 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:26:11,536 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:26:11,551 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:26:11,576 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:26:11,576 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:26:11,576 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:26:11,576 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:26:11,577 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:26:11,577 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:26:11,577 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:26:11,577 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:26:11,600 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states. [2020-08-18 23:26:11,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 23:26:11,610 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:26:11,611 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:26:11,611 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:26:11,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:26:11,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1963515353, now seen corresponding path program 1 times [2020-08-18 23:26:11,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:26:11,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413595690] [2020-08-18 23:26:11,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:26:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:12,270 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:26:12,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:12,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:26:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:12,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:12,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:12,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:26:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:12,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:12,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:26:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:12,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:12,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 23:26:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:12,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 23:26:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:12,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 23:26:12,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413595690] [2020-08-18 23:26:12,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:26:12,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:26:12,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110886408] [2020-08-18 23:26:12,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:26:12,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:26:12,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:26:12,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:26:12,456 INFO L87 Difference]: Start difference. First operand 167 states. Second operand 4 states. [2020-08-18 23:26:13,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:26:13,455 INFO L93 Difference]: Finished difference Result 276 states and 357 transitions. [2020-08-18 23:26:13,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 23:26:13,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 23:26:13,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:26:13,480 INFO L225 Difference]: With dead ends: 276 [2020-08-18 23:26:13,481 INFO L226 Difference]: Without dead ends: 153 [2020-08-18 23:26:13,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:26:13,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-18 23:26:13,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 124. [2020-08-18 23:26:13,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-18 23:26:13,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 145 transitions. [2020-08-18 23:26:13,648 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 145 transitions. Word has length 59 [2020-08-18 23:26:13,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:26:13,648 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 145 transitions. [2020-08-18 23:26:13,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:26:13,649 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 145 transitions. [2020-08-18 23:26:13,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 23:26:13,659 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:26:13,659 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:26:13,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:26:13,661 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:26:13,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:26:13,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1851002156, now seen corresponding path program 1 times [2020-08-18 23:26:13,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:26:13,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889711154] [2020-08-18 23:26:13,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:26:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:14,095 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:26:14,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:14,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:26:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:14,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:14,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:14,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:26:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:14,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:14,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 23:26:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:14,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:14,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 23:26:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:14,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 23:26:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:14,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 23:26:14,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889711154] [2020-08-18 23:26:14,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:26:14,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:26:14,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946206201] [2020-08-18 23:26:14,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:26:14,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:26:14,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:26:14,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:26:14,242 INFO L87 Difference]: Start difference. First operand 124 states and 145 transitions. Second operand 9 states. [2020-08-18 23:26:14,617 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:26:14,962 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:26:15,236 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:26:15,481 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:26:16,525 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:17,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:26:17,714 INFO L93 Difference]: Finished difference Result 423 states and 533 transitions. [2020-08-18 23:26:17,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 23:26:17,715 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-18 23:26:17,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:26:17,721 INFO L225 Difference]: With dead ends: 423 [2020-08-18 23:26:17,721 INFO L226 Difference]: Without dead ends: 327 [2020-08-18 23:26:17,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 23:26:17,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-08-18 23:26:17,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 265. [2020-08-18 23:26:17,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-08-18 23:26:17,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 324 transitions. [2020-08-18 23:26:17,841 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 324 transitions. Word has length 64 [2020-08-18 23:26:17,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:26:17,842 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 324 transitions. [2020-08-18 23:26:17,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:26:17,842 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 324 transitions. [2020-08-18 23:26:17,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-18 23:26:17,848 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:26:17,849 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:26:17,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:26:17,849 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:26:17,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:26:17,850 INFO L82 PathProgramCache]: Analyzing trace with hash 2013051811, now seen corresponding path program 1 times [2020-08-18 23:26:17,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:26:17,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025143378] [2020-08-18 23:26:17,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:26:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:18,209 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:26:18,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:18,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:26:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:18,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:18,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:18,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:26:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:18,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:18,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 23:26:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:18,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:18,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 23:26:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:18,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:18,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 23:26:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:18,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 23:26:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:18,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 23:26:18,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025143378] [2020-08-18 23:26:18,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:26:18,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 23:26:18,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696811216] [2020-08-18 23:26:18,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 23:26:18,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:26:18,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 23:26:18,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 23:26:18,364 INFO L87 Difference]: Start difference. First operand 265 states and 324 transitions. Second operand 7 states. [2020-08-18 23:26:18,683 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:26:20,065 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:20,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:26:20,660 INFO L93 Difference]: Finished difference Result 782 states and 1053 transitions. [2020-08-18 23:26:20,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 23:26:20,661 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 72 [2020-08-18 23:26:20,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:26:20,669 INFO L225 Difference]: With dead ends: 782 [2020-08-18 23:26:20,669 INFO L226 Difference]: Without dead ends: 545 [2020-08-18 23:26:20,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-08-18 23:26:20,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-08-18 23:26:20,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 452. [2020-08-18 23:26:20,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2020-08-18 23:26:20,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 561 transitions. [2020-08-18 23:26:20,775 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 561 transitions. Word has length 72 [2020-08-18 23:26:20,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:26:20,776 INFO L479 AbstractCegarLoop]: Abstraction has 452 states and 561 transitions. [2020-08-18 23:26:20,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 23:26:20,776 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 561 transitions. [2020-08-18 23:26:20,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 23:26:20,777 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:26:20,778 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:26:20,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:26:20,778 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:26:20,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:26:20,779 INFO L82 PathProgramCache]: Analyzing trace with hash -601082987, now seen corresponding path program 1 times [2020-08-18 23:26:20,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:26:20,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179388745] [2020-08-18 23:26:20,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:26:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:21,086 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:26:21,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:21,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:26:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:21,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:21,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:21,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:26:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:21,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:21,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 23:26:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:21,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 23:26:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:21,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:21,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 23:26:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:21,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 23:26:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 23:26:21,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179388745] [2020-08-18 23:26:21,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:26:21,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:26:21,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584024876] [2020-08-18 23:26:21,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:26:21,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:26:21,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:26:21,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:26:21,199 INFO L87 Difference]: Start difference. First operand 452 states and 561 transitions. Second operand 9 states. [2020-08-18 23:26:21,634 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:26:22,271 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:26:23,089 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:26:23,475 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:23,893 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:26:24,128 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:26:24,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:26:24,732 INFO L93 Difference]: Finished difference Result 948 states and 1227 transitions. [2020-08-18 23:26:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 23:26:24,733 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-18 23:26:24,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:26:24,739 INFO L225 Difference]: With dead ends: 948 [2020-08-18 23:26:24,740 INFO L226 Difference]: Without dead ends: 524 [2020-08-18 23:26:24,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 23:26:24,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-08-18 23:26:24,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 449. [2020-08-18 23:26:24,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-08-18 23:26:24,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 552 transitions. [2020-08-18 23:26:24,859 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 552 transitions. Word has length 70 [2020-08-18 23:26:24,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:26:24,860 INFO L479 AbstractCegarLoop]: Abstraction has 449 states and 552 transitions. [2020-08-18 23:26:24,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:26:24,860 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 552 transitions. [2020-08-18 23:26:24,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 23:26:24,862 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:26:24,862 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:26:24,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 23:26:24,863 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:26:24,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:26:24,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1418290782, now seen corresponding path program 1 times [2020-08-18 23:26:24,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:26:24,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981483430] [2020-08-18 23:26:24,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:26:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:25,128 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:26:25,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:25,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:26:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:25,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:25,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:25,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:26:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:25,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:25,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 23:26:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:25,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:25,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 23:26:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:25,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:25,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:25,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:26:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:25,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 23:26:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:25,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 23:26:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:25,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 23:26:25,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981483430] [2020-08-18 23:26:25,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:26:25,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:26:25,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541066020] [2020-08-18 23:26:25,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:26:25,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:26:25,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:26:25,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:26:25,235 INFO L87 Difference]: Start difference. First operand 449 states and 552 transitions. Second operand 9 states. [2020-08-18 23:26:25,612 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:26:26,572 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:26:26,874 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:27,171 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:27,423 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:28,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:26:28,645 INFO L93 Difference]: Finished difference Result 1360 states and 1888 transitions. [2020-08-18 23:26:28,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 23:26:28,645 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-08-18 23:26:28,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:26:28,656 INFO L225 Difference]: With dead ends: 1360 [2020-08-18 23:26:28,657 INFO L226 Difference]: Without dead ends: 939 [2020-08-18 23:26:28,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 23:26:28,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-08-18 23:26:28,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 795. [2020-08-18 23:26:28,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-08-18 23:26:28,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 992 transitions. [2020-08-18 23:26:28,819 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 992 transitions. Word has length 87 [2020-08-18 23:26:28,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:26:28,821 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 992 transitions. [2020-08-18 23:26:28,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:26:28,821 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 992 transitions. [2020-08-18 23:26:28,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 23:26:28,825 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:26:28,825 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:26:28,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 23:26:28,825 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:26:28,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:26:28,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1655372524, now seen corresponding path program 1 times [2020-08-18 23:26:28,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:26:28,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624955075] [2020-08-18 23:26:28,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:26:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:29,057 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:26:29,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:29,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:26:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:29,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:29,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:29,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:26:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:29,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:29,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 23:26:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:29,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:29,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 23:26:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:29,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:29,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:29,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:26:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:29,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 23:26:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:29,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 23:26:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:29,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 23:26:29,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624955075] [2020-08-18 23:26:29,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:26:29,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 23:26:29,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183095103] [2020-08-18 23:26:29,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 23:26:29,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:26:29,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 23:26:29,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 23:26:29,132 INFO L87 Difference]: Start difference. First operand 795 states and 992 transitions. Second operand 6 states. [2020-08-18 23:26:29,620 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:30,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:26:30,522 INFO L93 Difference]: Finished difference Result 1342 states and 1669 transitions. [2020-08-18 23:26:30,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 23:26:30,523 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-08-18 23:26:30,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:26:30,530 INFO L225 Difference]: With dead ends: 1342 [2020-08-18 23:26:30,531 INFO L226 Difference]: Without dead ends: 783 [2020-08-18 23:26:30,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:26:30,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2020-08-18 23:26:30,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 681. [2020-08-18 23:26:30,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 681 states. [2020-08-18 23:26:30,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 812 transitions. [2020-08-18 23:26:30,663 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 812 transitions. Word has length 83 [2020-08-18 23:26:30,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:26:30,663 INFO L479 AbstractCegarLoop]: Abstraction has 681 states and 812 transitions. [2020-08-18 23:26:30,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 23:26:30,664 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 812 transitions. [2020-08-18 23:26:30,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 23:26:30,668 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:26:30,668 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:26:30,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 23:26:30,669 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:26:30,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:26:30,669 INFO L82 PathProgramCache]: Analyzing trace with hash 765386145, now seen corresponding path program 1 times [2020-08-18 23:26:30,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:26:30,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063353509] [2020-08-18 23:26:30,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:26:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:30,935 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:26:30,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:30,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:26:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:30,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:30,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:30,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:26:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:30,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:30,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 23:26:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:30,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:30,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 23:26:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:31,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:31,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:31,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:26:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:31,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 23:26:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:31,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 23:26:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:31,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 23:26:31,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063353509] [2020-08-18 23:26:31,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:26:31,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:26:31,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771088144] [2020-08-18 23:26:31,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:26:31,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:26:31,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:26:31,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:26:31,075 INFO L87 Difference]: Start difference. First operand 681 states and 812 transitions. Second operand 9 states. [2020-08-18 23:26:32,215 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:32,452 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:26:32,700 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:32,941 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:33,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:26:33,563 INFO L93 Difference]: Finished difference Result 1456 states and 1829 transitions. [2020-08-18 23:26:33,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 23:26:33,563 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-08-18 23:26:33,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:26:33,569 INFO L225 Difference]: With dead ends: 1456 [2020-08-18 23:26:33,569 INFO L226 Difference]: Without dead ends: 803 [2020-08-18 23:26:33,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 23:26:33,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-08-18 23:26:33,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 701. [2020-08-18 23:26:33,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-08-18 23:26:33,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 832 transitions. [2020-08-18 23:26:33,710 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 832 transitions. Word has length 87 [2020-08-18 23:26:33,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:26:33,712 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 832 transitions. [2020-08-18 23:26:33,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:26:33,712 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 832 transitions. [2020-08-18 23:26:33,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 23:26:33,715 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:26:33,716 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:26:33,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 23:26:33,716 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:26:33,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:26:33,717 INFO L82 PathProgramCache]: Analyzing trace with hash -2143377757, now seen corresponding path program 1 times [2020-08-18 23:26:33,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:26:33,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508522402] [2020-08-18 23:26:33,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:26:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:34,085 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:26:34,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:34,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:26:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:34,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:34,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:34,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:26:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:34,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:34,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 23:26:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:34,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:34,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 23:26:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:34,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:34,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:34,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:26:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:34,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 23:26:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:34,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 23:26:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:34,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 23:26:34,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508522402] [2020-08-18 23:26:34,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:26:34,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 23:26:34,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089989921] [2020-08-18 23:26:34,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 23:26:34,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:26:34,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 23:26:34,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:26:34,237 INFO L87 Difference]: Start difference. First operand 701 states and 832 transitions. Second operand 11 states. [2020-08-18 23:26:34,807 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:35,044 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:35,267 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:35,992 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:36,253 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:36,489 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:37,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:26:37,193 INFO L93 Difference]: Finished difference Result 1322 states and 1646 transitions. [2020-08-18 23:26:37,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 23:26:37,196 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-08-18 23:26:37,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:26:37,201 INFO L225 Difference]: With dead ends: 1322 [2020-08-18 23:26:37,201 INFO L226 Difference]: Without dead ends: 649 [2020-08-18 23:26:37,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 23:26:37,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2020-08-18 23:26:37,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 576. [2020-08-18 23:26:37,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-08-18 23:26:37,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 668 transitions. [2020-08-18 23:26:37,294 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 668 transitions. Word has length 87 [2020-08-18 23:26:37,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:26:37,295 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 668 transitions. [2020-08-18 23:26:37,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 23:26:37,296 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 668 transitions. [2020-08-18 23:26:37,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-18 23:26:37,299 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:26:37,299 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:26:37,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 23:26:37,300 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:26:37,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:26:37,300 INFO L82 PathProgramCache]: Analyzing trace with hash 858193610, now seen corresponding path program 1 times [2020-08-18 23:26:37,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:26:37,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265206631] [2020-08-18 23:26:37,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:26:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:37,676 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:26:37,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:37,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:26:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:37,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:37,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:37,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:26:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:37,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:37,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:26:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:37,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:26:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:37,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:37,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 23:26:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:37,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:37,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:37,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:26:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:37,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 23:26:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:37,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 23:26:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 23:26:37,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265206631] [2020-08-18 23:26:37,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:26:37,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 23:26:37,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143475596] [2020-08-18 23:26:37,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 23:26:37,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:26:37,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 23:26:37,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:26:37,915 INFO L87 Difference]: Start difference. First operand 576 states and 668 transitions. Second operand 12 states. [2020-08-18 23:26:38,390 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:26:39,053 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:26:39,754 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:26:40,128 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:26:40,367 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:26:40,654 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:26:40,917 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:26:42,130 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:26:42,424 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:43,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:26:43,012 INFO L93 Difference]: Finished difference Result 1645 states and 2041 transitions. [2020-08-18 23:26:43,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 23:26:43,013 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2020-08-18 23:26:43,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:26:43,022 INFO L225 Difference]: With dead ends: 1645 [2020-08-18 23:26:43,022 INFO L226 Difference]: Without dead ends: 1269 [2020-08-18 23:26:43,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 23:26:43,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2020-08-18 23:26:43,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1155. [2020-08-18 23:26:43,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2020-08-18 23:26:43,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1335 transitions. [2020-08-18 23:26:43,198 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1335 transitions. Word has length 91 [2020-08-18 23:26:43,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:26:43,199 INFO L479 AbstractCegarLoop]: Abstraction has 1155 states and 1335 transitions. [2020-08-18 23:26:43,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 23:26:43,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1335 transitions. [2020-08-18 23:26:43,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 23:26:43,202 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:26:43,204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:26:43,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 23:26:43,204 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:26:43,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:26:43,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1244109311, now seen corresponding path program 1 times [2020-08-18 23:26:43,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:26:43,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003836723] [2020-08-18 23:26:43,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:26:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:43,506 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:26:43,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:43,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:26:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:43,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:43,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:43,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:26:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:43,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:43,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:26:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:43,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:26:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:43,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:43,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:43,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:26:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:43,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:43,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:43,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:26:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:43,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 23:26:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:43,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:43,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 23:26:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:43,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:43,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 23:26:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:43,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 23:26:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:43,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:43,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 23:26:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:43,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 23:26:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:43,759 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-18 23:26:43,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003836723] [2020-08-18 23:26:43,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:26:43,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 23:26:43,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157559324] [2020-08-18 23:26:43,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 23:26:43,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:26:43,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 23:26:43,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 23:26:43,767 INFO L87 Difference]: Start difference. First operand 1155 states and 1335 transitions. Second operand 16 states. [2020-08-18 23:26:44,355 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:26:44,704 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 23:26:44,982 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 23:26:45,224 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 23:26:45,859 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:26:46,174 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:26:46,559 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 23:26:46,840 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 23:26:47,743 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:26:48,402 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:26:48,704 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:26:49,047 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:26:49,513 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 23:26:49,998 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 23:26:50,292 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:50,541 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:26:50,810 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:26:51,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:26:51,263 INFO L93 Difference]: Finished difference Result 2146 states and 2551 transitions. [2020-08-18 23:26:51,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-18 23:26:51,264 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 134 [2020-08-18 23:26:51,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:26:51,271 INFO L225 Difference]: With dead ends: 2146 [2020-08-18 23:26:51,271 INFO L226 Difference]: Without dead ends: 1185 [2020-08-18 23:26:51,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=548, Invalid=2002, Unknown=0, NotChecked=0, Total=2550 [2020-08-18 23:26:51,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2020-08-18 23:26:51,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1065. [2020-08-18 23:26:51,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2020-08-18 23:26:51,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1223 transitions. [2020-08-18 23:26:51,419 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1223 transitions. Word has length 134 [2020-08-18 23:26:51,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:26:51,419 INFO L479 AbstractCegarLoop]: Abstraction has 1065 states and 1223 transitions. [2020-08-18 23:26:51,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 23:26:51,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1223 transitions. [2020-08-18 23:26:51,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-08-18 23:26:51,425 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:26:51,425 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:26:51,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 23:26:51,426 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:26:51,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:26:51,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1284254506, now seen corresponding path program 1 times [2020-08-18 23:26:51,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:26:51,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021715746] [2020-08-18 23:26:51,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:26:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:51,763 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:26:51,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:51,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:26:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:51,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:51,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:51,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:26:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:51,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:51,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:26:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:51,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:26:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:51,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:51,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:51,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:26:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:51,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:51,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:51,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:26:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:51,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 23:26:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:51,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:51,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 23:26:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 23:26:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 23:26:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 23:26:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-18 23:26:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 23:26:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 23:26:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:26:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-08-18 23:26:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-18 23:26:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,379 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 76 proven. 31 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2020-08-18 23:26:52,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021715746] [2020-08-18 23:26:52,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:26:52,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 23:26:52,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323978414] [2020-08-18 23:26:52,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 23:26:52,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:26:52,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 23:26:52,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-08-18 23:26:52,385 INFO L87 Difference]: Start difference. First operand 1065 states and 1223 transitions. Second operand 16 states. [2020-08-18 23:26:53,686 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:53,946 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:26:54,218 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:26:54,468 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:26:54,735 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:26:55,396 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:26:55,964 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 23:26:56,470 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 23:26:57,128 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:26:58,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:26:58,956 INFO L93 Difference]: Finished difference Result 2947 states and 3535 transitions. [2020-08-18 23:26:58,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-18 23:26:58,956 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 241 [2020-08-18 23:26:58,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:26:58,967 INFO L225 Difference]: With dead ends: 2947 [2020-08-18 23:26:58,967 INFO L226 Difference]: Without dead ends: 1803 [2020-08-18 23:26:58,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=449, Invalid=1807, Unknown=0, NotChecked=0, Total=2256 [2020-08-18 23:26:58,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2020-08-18 23:26:59,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1431. [2020-08-18 23:26:59,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1431 states. [2020-08-18 23:26:59,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1658 transitions. [2020-08-18 23:26:59,220 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1658 transitions. Word has length 241 [2020-08-18 23:26:59,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:26:59,221 INFO L479 AbstractCegarLoop]: Abstraction has 1431 states and 1658 transitions. [2020-08-18 23:26:59,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 23:26:59,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1658 transitions. [2020-08-18 23:26:59,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-08-18 23:26:59,232 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:26:59,233 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:26:59,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 23:26:59,233 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:26:59,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:26:59,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1853664495, now seen corresponding path program 1 times [2020-08-18 23:26:59,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:26:59,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165920564] [2020-08-18 23:26:59,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:26:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,563 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:26:59,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:26:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:26:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:26:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:26:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:26:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:26:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 23:26:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:59,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 23:26:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 23:26:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 23:26:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 23:26:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 23:26:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-18 23:26:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-18 23:26:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-08-18 23:26:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:26:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-18 23:26:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-18 23:26:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,982 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 85 proven. 31 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-08-18 23:26:59,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165920564] [2020-08-18 23:26:59,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:26:59,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 23:26:59,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531232173] [2020-08-18 23:26:59,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 23:26:59,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:26:59,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 23:26:59,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-08-18 23:26:59,984 INFO L87 Difference]: Start difference. First operand 1431 states and 1658 transitions. Second operand 17 states. [2020-08-18 23:27:00,565 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:27:00,884 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:27:01,144 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:27:01,378 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:27:02,015 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:27:02,877 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:27:03,233 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:27:03,478 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:27:04,064 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:27:04,672 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:27:04,906 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:27:05,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:27:05,458 INFO L93 Difference]: Finished difference Result 2569 states and 3040 transitions. [2020-08-18 23:27:05,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-18 23:27:05,459 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 247 [2020-08-18 23:27:05,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:27:05,468 INFO L225 Difference]: With dead ends: 2569 [2020-08-18 23:27:05,468 INFO L226 Difference]: Without dead ends: 1456 [2020-08-18 23:27:05,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=370, Invalid=1436, Unknown=0, NotChecked=0, Total=1806 [2020-08-18 23:27:05,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2020-08-18 23:27:05,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1402. [2020-08-18 23:27:05,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1402 states. [2020-08-18 23:27:05,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 1608 transitions. [2020-08-18 23:27:05,801 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 1608 transitions. Word has length 247 [2020-08-18 23:27:05,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:27:05,803 INFO L479 AbstractCegarLoop]: Abstraction has 1402 states and 1608 transitions. [2020-08-18 23:27:05,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 23:27:05,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 1608 transitions. [2020-08-18 23:27:05,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-08-18 23:27:05,812 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:27:05,812 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:27:05,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 23:27:05,812 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:27:05,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:27:05,813 INFO L82 PathProgramCache]: Analyzing trace with hash -276065170, now seen corresponding path program 1 times [2020-08-18 23:27:05,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:27:05,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933927441] [2020-08-18 23:27:05,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:27:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,097 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:27:06,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:27:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:27:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:27:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:27:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:27:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:27:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:27:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:27:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:27:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:27:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:27:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:27:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:27:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 23:27:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 23:27:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:27:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:27:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:27:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 23:27:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:27:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:27:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 23:27:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-18 23:27:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:27:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:27:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:27:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 23:27:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:27:06,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:27:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-18 23:27:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-08-18 23:27:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:27:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 23:27:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:27:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:27:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-18 23:27:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 23:27:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:06,503 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 92 proven. 26 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-08-18 23:27:06,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933927441] [2020-08-18 23:27:06,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:27:06,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 23:27:06,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484354000] [2020-08-18 23:27:06,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 23:27:06,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:27:06,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 23:27:06,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-08-18 23:27:06,507 INFO L87 Difference]: Start difference. First operand 1402 states and 1608 transitions. Second operand 17 states. [2020-08-18 23:27:06,960 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189