/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:01:52,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:01:52,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:01:52,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:01:52,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:01:52,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:01:52,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:01:52,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:01:52,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:01:52,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:01:52,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:01:52,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:01:52,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:01:52,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:01:52,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:01:52,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:01:52,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:01:52,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:01:52,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:01:52,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:01:52,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:01:52,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:01:52,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:01:52,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:01:52,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:01:52,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:01:52,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:01:52,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:01:52,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:01:52,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:01:52,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:01:52,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:01:52,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:01:52,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:01:52,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:01:52,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:01:52,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:01:52,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:01:52,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:01:52,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:01:52,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:01:52,381 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 05:01:52,403 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:01:52,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:01:52,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:01:52,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:01:52,405 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:01:52,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:01:52,405 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:01:52,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:01:52,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:01:52,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:01:52,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:01:52,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:01:52,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:01:52,407 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:01:52,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:01:52,407 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:01:52,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:01:52,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:01:52,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:01:52,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:01:52,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:01:52,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:01:52,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:01:52,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:01:52,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:01:52,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:01:52,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:01:52,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:01:52,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:01:52,410 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=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; [2020-08-19 05:01:52,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:01:52,716 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:01:52,721 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:01:52,723 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:01:52,724 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:01:52,725 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-19 05:01:52,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ba69fe31/72940188427f4137bcd1cc708a11a791/FLAG1df6f43e5 [2020-08-19 05:01:53,336 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:01:53,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-19 05:01:53,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ba69fe31/72940188427f4137bcd1cc708a11a791/FLAG1df6f43e5 [2020-08-19 05:01:53,620 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ba69fe31/72940188427f4137bcd1cc708a11a791 [2020-08-19 05:01:53,630 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:01:53,632 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:01:53,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:01:53,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:01:53,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:01:53,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:01:53" (1/1) ... [2020-08-19 05:01:53,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ac45c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:53, skipping insertion in model container [2020-08-19 05:01:53,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:01:53" (1/1) ... [2020-08-19 05:01:53,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:01:53,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:01:54,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:01:54,178 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:01:54,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:01:54,303 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:01:54,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:54 WrapperNode [2020-08-19 05:01:54,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:01:54,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:01:54,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:01:54,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:01:54,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:54" (1/1) ... [2020-08-19 05:01:54,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:54" (1/1) ... [2020-08-19 05:01:54,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:54" (1/1) ... [2020-08-19 05:01:54,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:54" (1/1) ... [2020-08-19 05:01:54,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:54" (1/1) ... [2020-08-19 05:01:54,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:54" (1/1) ... [2020-08-19 05:01:54,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:54" (1/1) ... [2020-08-19 05:01:54,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:01:54,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:01:54,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:01:54,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:01:54,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:01:54,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:01:54,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:01:54,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 05:01:54,465 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 05:01:54,465 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 05:01:54,465 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 05:01:54,465 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 05:01:54,466 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:01:54,466 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 05:01:54,466 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 05:01:54,466 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 05:01:54,466 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 05:01:54,466 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 05:01:54,467 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 05:01:54,467 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 05:01:54,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 05:01:54,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 05:01:54,467 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 05:01:54,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 05:01:54,468 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 05:01:54,468 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 05:01:54,468 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 05:01:54,468 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 05:01:54,468 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 05:01:54,468 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 05:01:54,468 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 05:01:54,469 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 05:01:54,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 05:01:54,469 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 05:01:54,469 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 05:01:54,469 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 05:01:54,469 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 05:01:54,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 05:01:54,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 05:01:54,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 05:01:54,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 05:01:54,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 05:01:54,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 05:01:54,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 05:01:54,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:01:54,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:01:54,471 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 05:01:54,471 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 05:01:54,471 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 05:01:54,471 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 05:01:54,472 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 05:01:54,472 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 05:01:54,472 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 05:01:54,472 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 05:01:54,472 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 05:01:54,472 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 05:01:54,472 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 05:01:54,473 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 05:01:54,473 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 05:01:54,473 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:01:54,473 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 05:01:54,473 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 05:01:54,473 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 05:01:54,474 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 05:01:54,474 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 05:01:54,474 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 05:01:54,474 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 05:01:54,474 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 05:01:54,474 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 05:01:54,475 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 05:01:54,475 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 05:01:54,475 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 05:01:54,475 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 05:01:54,475 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 05:01:54,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:01:54,475 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 05:01:54,476 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 05:01:54,476 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 05:01:54,476 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 05:01:54,476 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 05:01:54,476 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 05:01:54,476 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 05:01:54,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 05:01:54,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 05:01:54,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:01:54,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 05:01:54,477 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 05:01:54,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:01:54,477 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 05:01:54,478 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 05:01:54,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:01:54,478 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 05:01:54,478 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 05:01:54,478 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 05:01:54,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:01:54,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 05:01:54,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:01:55,583 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:01:55,584 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 05:01:55,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:01:55 BoogieIcfgContainer [2020-08-19 05:01:55,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:01:55,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:01:55,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:01:55,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:01:55,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:01:53" (1/3) ... [2020-08-19 05:01:55,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbe44e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:01:55, skipping insertion in model container [2020-08-19 05:01:55,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:54" (2/3) ... [2020-08-19 05:01:55,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbe44e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:01:55, skipping insertion in model container [2020-08-19 05:01:55,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:01:55" (3/3) ... [2020-08-19 05:01:55,605 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product42.cil.c [2020-08-19 05:01:55,616 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:01:55,628 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:01:55,642 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:01:55,666 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:01:55,666 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:01:55,666 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:01:55,666 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:01:55,666 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:01:55,667 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:01:55,667 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:01:55,667 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:01:55,688 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-19 05:01:55,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 05:01:55,699 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:01:55,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:01:55,701 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:01:55,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:01:55,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1349332709, now seen corresponding path program 1 times [2020-08-19 05:01:55,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:01:55,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827757667] [2020-08-19 05:01:55,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:01:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:56,472 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:01:56,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:01:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:56,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:01:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:56,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:01:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:56,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:01:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:56,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:01:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:56,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:01:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:56,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:01:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:56,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:01:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:56,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:01:56,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827757667] [2020-08-19 05:01:56,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:01:56,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 05:01:56,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535876164] [2020-08-19 05:01:56,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 05:01:56,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:01:56,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 05:01:56,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:01:56,615 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-19 05:01:57,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:01:57,841 INFO L93 Difference]: Finished difference Result 296 states and 385 transitions. [2020-08-19 05:01:57,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 05:01:57,844 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 05:01:57,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:01:57,865 INFO L225 Difference]: With dead ends: 296 [2020-08-19 05:01:57,866 INFO L226 Difference]: Without dead ends: 160 [2020-08-19 05:01:57,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:01:57,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-19 05:01:58,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127. [2020-08-19 05:01:58,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-19 05:01:58,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2020-08-19 05:01:58,027 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 52 [2020-08-19 05:01:58,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:01:58,028 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2020-08-19 05:01:58,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 05:01:58,028 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2020-08-19 05:01:58,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 05:01:58,039 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:01:58,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:01:58,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:01:58,040 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:01:58,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:01:58,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1093164693, now seen corresponding path program 1 times [2020-08-19 05:01:58,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:01:58,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503287071] [2020-08-19 05:01:58,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:01:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:58,448 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:01:58,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:01:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:58,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:01:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:58,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:01:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:58,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:01:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:58,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:01:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:58,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 05:01:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:58,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 05:01:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:58,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 05:01:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:58,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:01:58,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503287071] [2020-08-19 05:01:58,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:01:58,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:01:58,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638967214] [2020-08-19 05:01:58,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:01:58,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:01:58,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:01:58,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:01:58,496 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand 4 states. [2020-08-19 05:01:58,915 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:01:59,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:01:59,715 INFO L93 Difference]: Finished difference Result 225 states and 272 transitions. [2020-08-19 05:01:59,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:01:59,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 05:01:59,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:01:59,719 INFO L225 Difference]: With dead ends: 225 [2020-08-19 05:01:59,719 INFO L226 Difference]: Without dead ends: 144 [2020-08-19 05:01:59,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:01:59,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-19 05:01:59,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-19 05:01:59,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-19 05:01:59,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2020-08-19 05:01:59,754 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 53 [2020-08-19 05:01:59,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:01:59,754 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2020-08-19 05:01:59,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:01:59,755 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2020-08-19 05:01:59,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 05:01:59,757 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:01:59,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:01:59,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:01:59,757 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:01:59,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:01:59,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1756790423, now seen corresponding path program 1 times [2020-08-19 05:01:59,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:01:59,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921605660] [2020-08-19 05:01:59,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:01:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:00,118 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:00,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:00,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:00,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:00,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:00,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:00,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:02:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:00,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:02:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:00,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 05:02:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:00,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:02:00,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921605660] [2020-08-19 05:02:00,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:02:00,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:02:00,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864499338] [2020-08-19 05:02:00,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:02:00,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:00,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:02:00,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:02:00,221 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 8 states. [2020-08-19 05:02:00,594 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:00,915 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:01,183 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:01,408 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:02,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:02,537 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2020-08-19 05:02:02,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 05:02:02,538 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-19 05:02:02,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:02,540 INFO L225 Difference]: With dead ends: 238 [2020-08-19 05:02:02,540 INFO L226 Difference]: Without dead ends: 144 [2020-08-19 05:02:02,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:02:02,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-19 05:02:02,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-19 05:02:02,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-19 05:02:02,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2020-08-19 05:02:02,574 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 58 [2020-08-19 05:02:02,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:02,574 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2020-08-19 05:02:02,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:02:02,575 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2020-08-19 05:02:02,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-19 05:02:02,576 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:02,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:02:02,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:02:02,577 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:02,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:02,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1312872772, now seen corresponding path program 1 times [2020-08-19 05:02:02,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:02,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555059746] [2020-08-19 05:02:02,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:02,891 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:02,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:02,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:02,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:02,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:02,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:02,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:02:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:02,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:02,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-19 05:02:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:02,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-19 05:02:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:02,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-19 05:02:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:02,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:02:02,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555059746] [2020-08-19 05:02:02,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:02:02,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 05:02:02,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45217587] [2020-08-19 05:02:02,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 05:02:02,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:02,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 05:02:02,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:02:02,999 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand 6 states. [2020-08-19 05:02:03,353 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:04,525 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:05,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:05,127 INFO L93 Difference]: Finished difference Result 338 states and 414 transitions. [2020-08-19 05:02:05,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 05:02:05,128 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-08-19 05:02:05,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:05,134 INFO L225 Difference]: With dead ends: 338 [2020-08-19 05:02:05,135 INFO L226 Difference]: Without dead ends: 244 [2020-08-19 05:02:05,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:02:05,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-19 05:02:05,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 201. [2020-08-19 05:02:05,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-08-19 05:02:05,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2020-08-19 05:02:05,179 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 66 [2020-08-19 05:02:05,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:05,180 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2020-08-19 05:02:05,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 05:02:05,180 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2020-08-19 05:02:05,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-08-19 05:02:05,181 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:05,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:02:05,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:02:05,182 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:05,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:05,183 INFO L82 PathProgramCache]: Analyzing trace with hash 362669874, now seen corresponding path program 1 times [2020-08-19 05:02:05,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:05,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572282263] [2020-08-19 05:02:05,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:05,437 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:05,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:05,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:05,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:05,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:05,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:05,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:02:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:05,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:05,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:05,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:02:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:05,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-19 05:02:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:05,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 05:02:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:05,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-19 05:02:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:05,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:02:05,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572282263] [2020-08-19 05:02:05,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:02:05,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:02:05,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122774766] [2020-08-19 05:02:05,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:02:05,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:05,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:02:05,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:02:05,537 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand 8 states. [2020-08-19 05:02:05,916 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:07,278 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:07,548 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:07,790 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:08,014 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:08,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:08,652 INFO L93 Difference]: Finished difference Result 555 states and 692 transitions. [2020-08-19 05:02:08,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 05:02:08,655 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-08-19 05:02:08,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:08,660 INFO L225 Difference]: With dead ends: 555 [2020-08-19 05:02:08,661 INFO L226 Difference]: Without dead ends: 378 [2020-08-19 05:02:08,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:02:08,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-08-19 05:02:08,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 335. [2020-08-19 05:02:08,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-19 05:02:08,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 389 transitions. [2020-08-19 05:02:08,768 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 389 transitions. Word has length 80 [2020-08-19 05:02:08,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:08,769 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 389 transitions. [2020-08-19 05:02:08,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:02:08,769 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 389 transitions. [2020-08-19 05:02:08,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 05:02:08,770 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:08,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:02:08,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:02:08,771 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:08,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:08,771 INFO L82 PathProgramCache]: Analyzing trace with hash 871612076, now seen corresponding path program 1 times [2020-08-19 05:02:08,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:08,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825998784] [2020-08-19 05:02:08,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:09,047 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:09,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:09,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:09,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:09,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:09,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:09,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:02:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:09,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 05:02:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:09,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:09,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:09,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:02:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:09,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 05:02:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:09,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 05:02:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:09,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 05:02:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:09,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:02:09,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825998784] [2020-08-19 05:02:09,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:02:09,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 05:02:09,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669407780] [2020-08-19 05:02:09,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 05:02:09,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:09,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 05:02:09,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:02:09,185 INFO L87 Difference]: Start difference. First operand 335 states and 389 transitions. Second operand 9 states. [2020-08-19 05:02:09,549 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:10,049 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:11,634 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:13,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:13,225 INFO L93 Difference]: Finished difference Result 815 states and 1039 transitions. [2020-08-19 05:02:13,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 05:02:13,225 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-19 05:02:13,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:13,238 INFO L225 Difference]: With dead ends: 815 [2020-08-19 05:02:13,238 INFO L226 Difference]: Without dead ends: 627 [2020-08-19 05:02:13,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-19 05:02:13,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-08-19 05:02:13,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 556. [2020-08-19 05:02:13,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-19 05:02:13,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 666 transitions. [2020-08-19 05:02:13,400 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 666 transitions. Word has length 84 [2020-08-19 05:02:13,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:13,401 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 666 transitions. [2020-08-19 05:02:13,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 05:02:13,401 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 666 transitions. [2020-08-19 05:02:13,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 05:02:13,403 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:13,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:02:13,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:02:13,403 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:13,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:13,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1201377837, now seen corresponding path program 1 times [2020-08-19 05:02:13,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:13,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734045205] [2020-08-19 05:02:13,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,634 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:13,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:02:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 05:02:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:02:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 05:02:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 05:02:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 05:02:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:02:13,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734045205] [2020-08-19 05:02:13,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:02:13,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:02:13,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897048369] [2020-08-19 05:02:13,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:02:13,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:13,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:02:13,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:02:13,788 INFO L87 Difference]: Start difference. First operand 556 states and 666 transitions. Second operand 8 states. [2020-08-19 05:02:14,659 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:14,879 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:15,109 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:15,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:15,909 INFO L93 Difference]: Finished difference Result 1006 states and 1249 transitions. [2020-08-19 05:02:15,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 05:02:15,910 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-19 05:02:15,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:15,914 INFO L225 Difference]: With dead ends: 1006 [2020-08-19 05:02:15,914 INFO L226 Difference]: Without dead ends: 601 [2020-08-19 05:02:15,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:02:15,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-08-19 05:02:16,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 556. [2020-08-19 05:02:16,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-19 05:02:16,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 665 transitions. [2020-08-19 05:02:16,039 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 665 transitions. Word has length 84 [2020-08-19 05:02:16,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:16,040 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 665 transitions. [2020-08-19 05:02:16,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:02:16,040 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 665 transitions. [2020-08-19 05:02:16,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 05:02:16,041 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:16,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:02:16,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 05:02:16,042 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:16,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:16,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1128991279, now seen corresponding path program 1 times [2020-08-19 05:02:16,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:16,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394891212] [2020-08-19 05:02:16,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,280 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:16,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:02:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 05:02:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:02:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 05:02:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 05:02:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 05:02:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:02:16,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394891212] [2020-08-19 05:02:16,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:02:16,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 05:02:16,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211695238] [2020-08-19 05:02:16,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:02:16,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:16,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:02:16,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:02:16,434 INFO L87 Difference]: Start difference. First operand 556 states and 665 transitions. Second operand 12 states. [2020-08-19 05:02:16,949 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:17,182 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:17,397 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:18,112 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:18,347 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:02:18,616 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:18,858 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:19,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:19,835 INFO L93 Difference]: Finished difference Result 1144 states and 1416 transitions. [2020-08-19 05:02:19,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 05:02:19,836 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-19 05:02:19,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:19,840 INFO L225 Difference]: With dead ends: 1144 [2020-08-19 05:02:19,841 INFO L226 Difference]: Without dead ends: 612 [2020-08-19 05:02:19,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-19 05:02:19,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-08-19 05:02:19,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 563. [2020-08-19 05:02:19,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-08-19 05:02:19,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 672 transitions. [2020-08-19 05:02:19,969 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 672 transitions. Word has length 84 [2020-08-19 05:02:19,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:19,969 INFO L479 AbstractCegarLoop]: Abstraction has 563 states and 672 transitions. [2020-08-19 05:02:19,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:02:19,970 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 672 transitions. [2020-08-19 05:02:19,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-19 05:02:19,971 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:19,971 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:02:19,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 05:02:19,972 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:19,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:19,972 INFO L82 PathProgramCache]: Analyzing trace with hash -482545033, now seen corresponding path program 1 times [2020-08-19 05:02:19,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:19,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047303617] [2020-08-19 05:02:19,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,239 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:20,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:02:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 05:02:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:02:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 05:02:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 05:02:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:02:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 05:02:20,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047303617] [2020-08-19 05:02:20,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:02:20,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 05:02:20,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108544023] [2020-08-19 05:02:20,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:02:20,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:20,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:02:20,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:02:20,475 INFO L87 Difference]: Start difference. First operand 563 states and 672 transitions. Second operand 12 states. [2020-08-19 05:02:20,902 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:21,594 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:22,398 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:02:22,699 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:02:22,980 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:02:23,229 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:02:23,520 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:02:23,792 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:02:24,282 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-19 05:02:24,564 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:02:24,866 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:02:25,148 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 05:02:27,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:27,206 INFO L93 Difference]: Finished difference Result 1664 states and 2066 transitions. [2020-08-19 05:02:27,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 05:02:27,209 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-19 05:02:27,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:27,217 INFO L225 Difference]: With dead ends: 1664 [2020-08-19 05:02:27,217 INFO L226 Difference]: Without dead ends: 1125 [2020-08-19 05:02:27,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-08-19 05:02:27,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-08-19 05:02:27,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1062. [2020-08-19 05:02:27,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1062 states. [2020-08-19 05:02:27,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1253 transitions. [2020-08-19 05:02:27,386 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1253 transitions. Word has length 96 [2020-08-19 05:02:27,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:27,386 INFO L479 AbstractCegarLoop]: Abstraction has 1062 states and 1253 transitions. [2020-08-19 05:02:27,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:02:27,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1253 transitions. [2020-08-19 05:02:27,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-19 05:02:27,389 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:27,389 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:02:27,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 05:02:27,390 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:27,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:27,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1334976659, now seen corresponding path program 1 times [2020-08-19 05:02:27,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:27,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207852528] [2020-08-19 05:02:27,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:27,648 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:27,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:27,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:27,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:27,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:27,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:27,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:02:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:27,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 05:02:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:27,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:02:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:27,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:27,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:27,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:02:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:27,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:27,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:27,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 05:02:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:27,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-19 05:02:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:27,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 05:02:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:27,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 05:02:27,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207852528] [2020-08-19 05:02:27,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:02:27,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-19 05:02:27,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046840505] [2020-08-19 05:02:27,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 05:02:27,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:27,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 05:02:27,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:02:27,869 INFO L87 Difference]: Start difference. First operand 1062 states and 1253 transitions. Second operand 14 states. [2020-08-19 05:02:28,672 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:29,008 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:29,258 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:29,832 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:30,578 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:30,936 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:31,518 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:31,797 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:02:32,066 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:02:33,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:33,856 INFO L93 Difference]: Finished difference Result 2205 states and 2747 transitions. [2020-08-19 05:02:33,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 05:02:33,857 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 100 [2020-08-19 05:02:33,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:33,865 INFO L225 Difference]: With dead ends: 2205 [2020-08-19 05:02:33,865 INFO L226 Difference]: Without dead ends: 1167 [2020-08-19 05:02:33,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2020-08-19 05:02:33,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2020-08-19 05:02:34,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 978. [2020-08-19 05:02:34,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-08-19 05:02:34,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1149 transitions. [2020-08-19 05:02:34,112 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1149 transitions. Word has length 100 [2020-08-19 05:02:34,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:34,112 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1149 transitions. [2020-08-19 05:02:34,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 05:02:34,113 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1149 transitions. [2020-08-19 05:02:34,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-19 05:02:34,115 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:34,115 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:02:34,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 05:02:34,116 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:34,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:34,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1799494055, now seen corresponding path program 1 times [2020-08-19 05:02:34,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:34,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614880750] [2020-08-19 05:02:34,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:34,390 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:34,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:34,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:34,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:34,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:34,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:34,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:02:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:34,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 05:02:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:34,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:34,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:34,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:02:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:34,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:34,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:34,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:34,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 05:02:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:34,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-19 05:02:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:34,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 05:02:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:34,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 05:02:34,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614880750] [2020-08-19 05:02:34,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:02:34,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 05:02:34,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823972472] [2020-08-19 05:02:34,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 05:02:34,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:34,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 05:02:34,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-19 05:02:34,593 INFO L87 Difference]: Start difference. First operand 978 states and 1149 transitions. Second operand 13 states. [2020-08-19 05:02:35,353 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:35,583 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:35,810 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:36,955 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:37,453 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:37,783 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:02:38,068 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:02:38,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:38,776 INFO L93 Difference]: Finished difference Result 1688 states and 1988 transitions. [2020-08-19 05:02:38,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 05:02:38,777 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 100 [2020-08-19 05:02:38,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:38,779 INFO L225 Difference]: With dead ends: 1688 [2020-08-19 05:02:38,779 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 05:02:38,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-08-19 05:02:38,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 05:02:38,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 05:02:38,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 05:02:38,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 05:02:38,786 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 100 [2020-08-19 05:02:38,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:38,786 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 05:02:38,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 05:02:38,786 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 05:02:38,786 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 05:02:38,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 05:02:38,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 05:02:40,033 WARN L193 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-19 05:02:42,844 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 235 [2020-08-19 05:02:43,433 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 235 [2020-08-19 05:02:43,758 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-19 05:02:44,246 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-19 05:02:45,267 WARN L193 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-19 05:02:46,418 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 162 DAG size of output: 30 [2020-08-19 05:02:46,580 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-19 05:02:47,031 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 40 [2020-08-19 05:02:47,207 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 24 [2020-08-19 05:02:47,473 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 23 [2020-08-19 05:02:47,630 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-08-19 05:02:48,751 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 170 DAG size of output: 38 [2020-08-19 05:02:48,913 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-19 05:02:49,694 WARN L193 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-19 05:02:49,984 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 27 [2020-08-19 05:02:50,560 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 30