/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:51:34,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:51:34,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:51:34,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:51:34,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:51:34,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:51:34,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:51:34,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:51:34,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:51:34,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:51:34,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:51:34,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:51:34,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:51:34,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:51:34,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:51:34,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:51:34,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:51:34,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:51:34,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:51:34,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:51:34,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:51:34,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:51:34,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:51:34,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:51:34,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:51:34,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:51:34,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:51:34,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:51:34,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:51:34,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:51:34,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:51:34,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:51:34,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:51:34,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:51:34,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:51:34,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:51:34,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:51:34,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:51:34,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:51:34,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:51:34,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:51:34,319 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 [2020-08-21 18:51:34,341 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:51:34,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:51:34,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:51:34,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:51:34,343 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:51:34,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:51:34,343 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:51:34,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:51:34,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:51:34,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:51:34,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:51:34,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:51:34,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:51:34,345 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:51:34,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:51:34,345 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:51:34,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:51:34,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:51:34,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:51:34,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:51:34,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:51:34,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:51:34,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:51:34,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:51:34,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:51:34,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:51:34,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:51:34,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:51:34,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:51:34,348 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 18:51:34,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:51:34,674 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:51:34,677 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:51:34,679 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:51:34,679 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:51:34,680 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2020-08-21 18:51:34,749 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9de3a5f80/0eef077241324143861f446b553f6764/FLAG43a1c89a6 [2020-08-21 18:51:35,233 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:51:35,234 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2020-08-21 18:51:35,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9de3a5f80/0eef077241324143861f446b553f6764/FLAG43a1c89a6 [2020-08-21 18:51:35,530 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9de3a5f80/0eef077241324143861f446b553f6764 [2020-08-21 18:51:35,538 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:51:35,539 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:51:35,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:51:35,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:51:35,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:51:35,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:51:35" (1/1) ... [2020-08-21 18:51:35,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7503bbdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:35, skipping insertion in model container [2020-08-21 18:51:35,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:51:35" (1/1) ... [2020-08-21 18:51:35,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:51:35,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:51:35,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:51:35,981 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:51:36,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:51:36,234 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:51:36,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:36 WrapperNode [2020-08-21 18:51:36,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:51:36,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:51:36,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:51:36,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:51:36,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:36" (1/1) ... [2020-08-21 18:51:36,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:36" (1/1) ... [2020-08-21 18:51:36,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:36" (1/1) ... [2020-08-21 18:51:36,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:36" (1/1) ... [2020-08-21 18:51:36,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:36" (1/1) ... [2020-08-21 18:51:36,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:36" (1/1) ... [2020-08-21 18:51:36,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:36" (1/1) ... [2020-08-21 18:51:36,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:51:36,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:51:36,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:51:36,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:51:36,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:36" (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 [2020-08-21 18:51:36,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:51:36,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:51:36,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 18:51:36,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 18:51:36,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 18:51:36,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 18:51:36,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 18:51:36,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 18:51:36,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 18:51:36,443 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 18:51:36,443 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 18:51:36,444 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 18:51:36,444 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 18:51:36,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:51:36,444 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 18:51:36,444 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 18:51:36,445 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 18:51:36,445 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 18:51:36,445 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 18:51:36,445 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 18:51:36,445 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 18:51:36,445 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 18:51:36,446 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 18:51:36,446 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 18:51:36,446 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 18:51:36,446 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 18:51:36,446 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 18:51:36,446 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 18:51:36,447 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 18:51:36,447 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 18:51:36,447 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 18:51:36,447 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 18:51:36,447 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 18:51:36,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 18:51:36,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 18:51:36,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 18:51:36,448 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 18:51:36,448 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 18:51:36,448 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 18:51:36,448 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 18:51:36,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 18:51:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:51:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:51:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 18:51:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 18:51:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 18:51:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 18:51:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 18:51:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 18:51:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 18:51:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:51:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 18:51:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 18:51:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:51:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 18:51:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 18:51:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:51:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 18:51:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 18:51:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:51:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 18:51:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 18:51:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 18:51:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 18:51:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 18:51:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 18:51:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 18:51:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 18:51:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 18:51:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 18:51:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 18:51:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 18:51:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 18:51:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 18:51:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:51:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 18:51:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 18:51:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 18:51:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 18:51:36,455 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 18:51:36,455 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 18:51:36,455 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 18:51:36,455 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 18:51:36,455 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 18:51:36,455 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 18:51:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 18:51:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 18:51:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 18:51:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 18:51:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 18:51:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 18:51:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 18:51:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 18:51:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:51:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 18:51:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:51:37,629 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:51:37,630 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 18:51:37,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:51:37 BoogieIcfgContainer [2020-08-21 18:51:37,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:51:37,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:51:37,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:51:37,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:51:37,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:51:35" (1/3) ... [2020-08-21 18:51:37,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3fe7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:51:37, skipping insertion in model container [2020-08-21 18:51:37,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:51:36" (2/3) ... [2020-08-21 18:51:37,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3fe7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:51:37, skipping insertion in model container [2020-08-21 18:51:37,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:51:37" (3/3) ... [2020-08-21 18:51:37,643 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product43.cil.c [2020-08-21 18:51:37,654 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:51:37,662 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:51:37,675 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:51:37,700 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:51:37,700 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:51:37,700 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:51:37,700 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:51:37,700 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:51:37,701 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:51:37,701 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:51:37,701 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:51:37,722 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-21 18:51:37,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 18:51:37,732 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:51:37,733 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:51:37,734 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:51:37,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:51:37,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1951083148, now seen corresponding path program 1 times [2020-08-21 18:51:37,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:51:37,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440327293] [2020-08-21 18:51:37,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:51:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:38,395 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:51:38,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:38,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:51:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:38,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:51:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:38,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:38,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:51:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:38,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:51:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:38,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:51:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:38,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:38,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:51:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:38,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:51:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:38,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:51:38,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440327293] [2020-08-21 18:51:38,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:51:38,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:51:38,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870160028] [2020-08-21 18:51:38,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:51:38,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:51:38,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:51:38,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:51:38,604 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 4 states. [2020-08-21 18:51:39,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:51:39,686 INFO L93 Difference]: Finished difference Result 308 states and 391 transitions. [2020-08-21 18:51:39,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 18:51:39,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 18:51:39,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:51:39,702 INFO L225 Difference]: With dead ends: 308 [2020-08-21 18:51:39,703 INFO L226 Difference]: Without dead ends: 170 [2020-08-21 18:51:39,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:51:39,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-21 18:51:39,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 139. [2020-08-21 18:51:39,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-21 18:51:39,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 161 transitions. [2020-08-21 18:51:39,805 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 161 transitions. Word has length 59 [2020-08-21 18:51:39,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:51:39,806 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 161 transitions. [2020-08-21 18:51:39,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:51:39,806 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 161 transitions. [2020-08-21 18:51:39,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 18:51:39,810 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:51:39,810 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] [2020-08-21 18:51:39,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:51:39,811 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:51:39,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:51:39,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1220523940, now seen corresponding path program 1 times [2020-08-21 18:51:39,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:51:39,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857090683] [2020-08-21 18:51:39,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:51:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:40,140 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:51:40,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:40,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:51:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:40,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:51:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:40,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:40,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:51:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:40,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:51:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:40,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:51:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:40,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:40,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 18:51:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:40,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 18:51:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:40,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:51:40,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857090683] [2020-08-21 18:51:40,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:51:40,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:51:40,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796786126] [2020-08-21 18:51:40,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:51:40,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:51:40,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:51:40,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:51:40,200 INFO L87 Difference]: Start difference. First operand 139 states and 161 transitions. Second operand 5 states. [2020-08-21 18:51:40,652 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:41,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:51:41,563 INFO L93 Difference]: Finished difference Result 244 states and 293 transitions. [2020-08-21 18:51:41,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 18:51:41,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 18:51:41,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:51:41,568 INFO L225 Difference]: With dead ends: 244 [2020-08-21 18:51:41,568 INFO L226 Difference]: Without dead ends: 160 [2020-08-21 18:51:41,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:51:41,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-21 18:51:41,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 130. [2020-08-21 18:51:41,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-21 18:51:41,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2020-08-21 18:51:41,612 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 60 [2020-08-21 18:51:41,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:51:41,612 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2020-08-21 18:51:41,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:51:41,613 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2020-08-21 18:51:41,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 18:51:41,615 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:51:41,615 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:51:41,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:51:41,616 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:51:41,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:51:41,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1125066517, now seen corresponding path program 1 times [2020-08-21 18:51:41,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:51:41,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752032675] [2020-08-21 18:51:41,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:51:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:41,955 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:51:41,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:41,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:51:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:41,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:51:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:41,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:42,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:51:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:42,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:51:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:42,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:51:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:42,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:42,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 18:51:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:42,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 18:51:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:42,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:51:42,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752032675] [2020-08-21 18:51:42,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:51:42,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:51:42,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648536732] [2020-08-21 18:51:42,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:51:42,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:51:42,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:51:42,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:51:42,045 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 9 states. [2020-08-21 18:51:42,482 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:51:42,824 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:43,086 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:43,306 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:44,183 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:45,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:51:45,775 INFO L93 Difference]: Finished difference Result 435 states and 529 transitions. [2020-08-21 18:51:45,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 18:51:45,776 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-21 18:51:45,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:51:45,781 INFO L225 Difference]: With dead ends: 435 [2020-08-21 18:51:45,781 INFO L226 Difference]: Without dead ends: 333 [2020-08-21 18:51:45,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 18:51:45,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-08-21 18:51:45,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 268. [2020-08-21 18:51:45,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-21 18:51:45,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 318 transitions. [2020-08-21 18:51:45,863 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 318 transitions. Word has length 64 [2020-08-21 18:51:45,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:51:45,864 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 318 transitions. [2020-08-21 18:51:45,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:51:45,864 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 318 transitions. [2020-08-21 18:51:45,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 18:51:45,866 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:51:45,867 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:51:45,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:51:45,867 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:51:45,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:51:45,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1836372268, now seen corresponding path program 1 times [2020-08-21 18:51:45,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:51:45,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618794032] [2020-08-21 18:51:45,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:51:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,183 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:51:46,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:51:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:51:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:51:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:51:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:51:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 18:51:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 18:51:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:51:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:46,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 18:51:46,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618794032] [2020-08-21 18:51:46,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:51:46,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:51:46,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167617909] [2020-08-21 18:51:46,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:51:46,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:51:46,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:51:46,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:51:46,309 INFO L87 Difference]: Start difference. First operand 268 states and 318 transitions. Second operand 9 states. [2020-08-21 18:51:46,654 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:51:47,278 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:48,226 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:48,469 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:51:48,770 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:51:49,074 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:49,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:51:49,557 INFO L93 Difference]: Finished difference Result 679 states and 862 transitions. [2020-08-21 18:51:49,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 18:51:49,558 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-21 18:51:49,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:51:49,564 INFO L225 Difference]: With dead ends: 679 [2020-08-21 18:51:49,565 INFO L226 Difference]: Without dead ends: 439 [2020-08-21 18:51:49,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 18:51:49,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-08-21 18:51:49,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 379. [2020-08-21 18:51:49,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-21 18:51:49,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 451 transitions. [2020-08-21 18:51:49,647 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 451 transitions. Word has length 70 [2020-08-21 18:51:49,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:51:49,647 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 451 transitions. [2020-08-21 18:51:49,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:51:49,648 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 451 transitions. [2020-08-21 18:51:49,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-21 18:51:49,651 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:51:49,651 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, 1, 1] [2020-08-21 18:51:49,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:51:49,652 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:51:49,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:51:49,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1329110427, now seen corresponding path program 1 times [2020-08-21 18:51:49,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:51:49,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952347184] [2020-08-21 18:51:49,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:51:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:49,962 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:51:49,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:49,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:51:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:49,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:51:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:49,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:49,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:51:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:50,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:51:50,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:50,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:51:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:50,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:50,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:51:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:50,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:50,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:51:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:50,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:51:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:50,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:51:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:50,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:51:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:50,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:50,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 18:51:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:50,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 18:51:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:50,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:51:50,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952347184] [2020-08-21 18:51:50,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:51:50,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:51:50,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108650950] [2020-08-21 18:51:50,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:51:50,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:51:50,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:51:50,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:51:50,105 INFO L87 Difference]: Start difference. First operand 379 states and 451 transitions. Second operand 9 states. [2020-08-21 18:51:50,573 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:51:51,482 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:51,714 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:51:51,995 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:52,262 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:53,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:51:53,643 INFO L93 Difference]: Finished difference Result 1185 states and 1563 transitions. [2020-08-21 18:51:53,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 18:51:53,644 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-08-21 18:51:53,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:51:53,650 INFO L225 Difference]: With dead ends: 1185 [2020-08-21 18:51:53,650 INFO L226 Difference]: Without dead ends: 834 [2020-08-21 18:51:53,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-21 18:51:53,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-08-21 18:51:53,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 717. [2020-08-21 18:51:53,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2020-08-21 18:51:53,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 858 transitions. [2020-08-21 18:51:53,779 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 858 transitions. Word has length 102 [2020-08-21 18:51:53,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:51:53,780 INFO L479 AbstractCegarLoop]: Abstraction has 717 states and 858 transitions. [2020-08-21 18:51:53,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:51:53,780 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 858 transitions. [2020-08-21 18:51:53,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-21 18:51:53,783 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:51:53,784 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, 1, 1] [2020-08-21 18:51:53,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:51:53,784 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:51:53,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:51:53,785 INFO L82 PathProgramCache]: Analyzing trace with hash 359529404, now seen corresponding path program 1 times [2020-08-21 18:51:53,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:51:53,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965929167] [2020-08-21 18:51:53,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:51:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:54,035 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:51:54,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:54,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:51:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:54,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:51:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:54,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:54,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:51:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:54,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:51:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:54,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:51:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:54,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:54,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:51:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:54,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:54,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:51:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:54,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:51:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:54,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:51:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:54,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:51:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:54,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:54,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 18:51:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:54,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 18:51:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:54,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:51:54,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965929167] [2020-08-21 18:51:54,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:51:54,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:51:54,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273325207] [2020-08-21 18:51:54,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:51:54,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:51:54,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:51:54,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:51:54,149 INFO L87 Difference]: Start difference. First operand 717 states and 858 transitions. Second operand 9 states. [2020-08-21 18:51:55,221 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:55,473 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:51:55,752 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:56,012 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:56,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:51:56,687 INFO L93 Difference]: Finished difference Result 1536 states and 1964 transitions. [2020-08-21 18:51:56,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 18:51:56,688 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-08-21 18:51:56,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:51:56,696 INFO L225 Difference]: With dead ends: 1536 [2020-08-21 18:51:56,698 INFO L226 Difference]: Without dead ends: 847 [2020-08-21 18:51:56,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:51:56,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-08-21 18:51:56,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 737. [2020-08-21 18:51:56,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2020-08-21 18:51:56,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 878 transitions. [2020-08-21 18:51:56,867 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 878 transitions. Word has length 102 [2020-08-21 18:51:56,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:51:56,869 INFO L479 AbstractCegarLoop]: Abstraction has 737 states and 878 transitions. [2020-08-21 18:51:56,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:51:56,870 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 878 transitions. [2020-08-21 18:51:56,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-21 18:51:56,874 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:51:56,876 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, 1, 1] [2020-08-21 18:51:56,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 18:51:56,877 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:51:56,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:51:56,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1689858438, now seen corresponding path program 1 times [2020-08-21 18:51:56,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:51:56,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875583178] [2020-08-21 18:51:56,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:51:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:57,146 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:51:57,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:57,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:51:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:57,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:51:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:57,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:57,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:51:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:57,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:51:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:57,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:51:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:57,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:51:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:57,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:51:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:57,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:51:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:57,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:51:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:57,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:51:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:57,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:51:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:57,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:51:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:57,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:51:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:57,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 18:51:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:57,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 18:51:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:51:57,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:51:57,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875583178] [2020-08-21 18:51:57,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:51:57,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 18:51:57,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787763278] [2020-08-21 18:51:57,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 18:51:57,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:51:57,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 18:51:57,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:51:57,301 INFO L87 Difference]: Start difference. First operand 737 states and 878 transitions. Second operand 11 states. [2020-08-21 18:51:57,811 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:58,045 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:58,265 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:59,025 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:59,382 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:51:59,611 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:52:00,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:52:00,571 INFO L93 Difference]: Finished difference Result 1360 states and 1702 transitions. [2020-08-21 18:52:00,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 18:52:00,575 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-08-21 18:52:00,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:52:00,594 INFO L225 Difference]: With dead ends: 1360 [2020-08-21 18:52:00,595 INFO L226 Difference]: Without dead ends: 651 [2020-08-21 18:52:00,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 18:52:00,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2020-08-21 18:52:00,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 578. [2020-08-21 18:52:00,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-08-21 18:52:00,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 674 transitions. [2020-08-21 18:52:00,699 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 674 transitions. Word has length 102 [2020-08-21 18:52:00,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:52:00,699 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 674 transitions. [2020-08-21 18:52:00,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 18:52:00,699 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 674 transitions. [2020-08-21 18:52:00,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-08-21 18:52:00,703 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:52:00,703 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, 1, 1, 1, 1, 1, 1] [2020-08-21 18:52:00,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 18:52:00,704 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:52:00,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:52:00,704 INFO L82 PathProgramCache]: Analyzing trace with hash -764679949, now seen corresponding path program 1 times [2020-08-21 18:52:00,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:52:00,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324453531] [2020-08-21 18:52:00,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:52:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,182 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:52:01,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:52:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:52:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:52:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:52:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:52:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 18:52:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 18:52:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:52:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:52:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 18:52:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-21 18:52:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:01,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:52:01,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324453531] [2020-08-21 18:52:01,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:52:01,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 18:52:01,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319047551] [2020-08-21 18:52:01,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:52:01,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:52:01,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:52:01,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:52:01,377 INFO L87 Difference]: Start difference. First operand 578 states and 674 transitions. Second operand 12 states. [2020-08-21 18:52:01,815 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:52:02,427 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:52:03,083 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:03,403 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:03,642 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:03,924 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:04,188 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:05,496 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:52:05,779 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:52:06,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:52:06,369 INFO L93 Difference]: Finished difference Result 1691 states and 2129 transitions. [2020-08-21 18:52:06,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 18:52:06,370 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 106 [2020-08-21 18:52:06,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:52:06,378 INFO L225 Difference]: With dead ends: 1691 [2020-08-21 18:52:06,378 INFO L226 Difference]: Without dead ends: 1313 [2020-08-21 18:52:06,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 18:52:06,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2020-08-21 18:52:06,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1197. [2020-08-21 18:52:06,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-08-21 18:52:06,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1399 transitions. [2020-08-21 18:52:06,599 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1399 transitions. Word has length 106 [2020-08-21 18:52:06,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:52:06,602 INFO L479 AbstractCegarLoop]: Abstraction has 1197 states and 1399 transitions. [2020-08-21 18:52:06,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:52:06,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1399 transitions. [2020-08-21 18:52:06,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-21 18:52:06,606 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:52:06,607 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:52:06,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 18:52:06,607 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:52:06,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:52:06,608 INFO L82 PathProgramCache]: Analyzing trace with hash -60868023, now seen corresponding path program 1 times [2020-08-21 18:52:06,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:52:06,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001987071] [2020-08-21 18:52:06,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:52:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:06,900 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:52:06,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:06,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:52:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:06,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:06,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:52:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:06,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:52:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:06,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:52:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:06,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:52:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:06,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:52:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:07,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:07,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:07,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:52:07,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:07,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:07,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:07,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:52:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:07,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:07,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:07,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:52:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:07,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 18:52:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:07,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:07,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-21 18:52:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:07,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:07,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:52:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:07,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 18:52:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:07,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:07,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-21 18:52:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:07,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-21 18:52:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:07,142 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-21 18:52:07,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001987071] [2020-08-21 18:52:07,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:52:07,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 18:52:07,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591601249] [2020-08-21 18:52:07,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 18:52:07,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:52:07,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 18:52:07,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 18:52:07,145 INFO L87 Difference]: Start difference. First operand 1197 states and 1399 transitions. Second operand 16 states. [2020-08-21 18:52:07,716 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:08,037 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 18:52:08,302 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 18:52:08,551 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 18:52:09,150 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:52:09,449 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:52:09,801 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:52:10,074 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:52:11,276 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:52:11,725 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:12,018 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:12,344 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:12,806 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:52:13,355 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:52:13,613 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:52:13,886 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:14,164 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:14,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:52:14,600 INFO L93 Difference]: Finished difference Result 2225 states and 2688 transitions. [2020-08-21 18:52:14,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-21 18:52:14,601 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 149 [2020-08-21 18:52:14,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:52:14,609 INFO L225 Difference]: With dead ends: 2225 [2020-08-21 18:52:14,609 INFO L226 Difference]: Without dead ends: 1222 [2020-08-21 18:52:14,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=548, Invalid=2002, Unknown=0, NotChecked=0, Total=2550 [2020-08-21 18:52:14,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2020-08-21 18:52:14,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1102. [2020-08-21 18:52:14,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-08-21 18:52:14,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1268 transitions. [2020-08-21 18:52:14,826 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1268 transitions. Word has length 149 [2020-08-21 18:52:14,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:52:14,827 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1268 transitions. [2020-08-21 18:52:14,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 18:52:14,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1268 transitions. [2020-08-21 18:52:14,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-08-21 18:52:14,838 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:52:14,839 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:52:14,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 18:52:14,840 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:52:14,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:52:14,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1576976523, now seen corresponding path program 1 times [2020-08-21 18:52:14,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:52:14,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862651776] [2020-08-21 18:52:14,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:52:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,187 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:52:15,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:52:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:52:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:52:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:52:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:52:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:52:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:52:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:52:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:52:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 18:52:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 18:52:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:52:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:52:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-21 18:52:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:52:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:52:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-21 18:52:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-21 18:52:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:52:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-21 18:52:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-21 18:52:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:52:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:52:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-21 18:52:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-21 18:52:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:15,840 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 104 proven. 48 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2020-08-21 18:52:15,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862651776] [2020-08-21 18:52:15,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:52:15,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 18:52:15,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109107810] [2020-08-21 18:52:15,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 18:52:15,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:52:15,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 18:52:15,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-08-21 18:52:15,848 INFO L87 Difference]: Start difference. First operand 1102 states and 1268 transitions. Second operand 16 states. [2020-08-21 18:52:17,240 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:52:17,529 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:17,774 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:18,027 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:52:19,139 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:20,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:52:20,945 INFO L93 Difference]: Finished difference Result 3031 states and 3632 transitions. [2020-08-21 18:52:20,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 18:52:20,946 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 302 [2020-08-21 18:52:20,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:52:20,957 INFO L225 Difference]: With dead ends: 3031 [2020-08-21 18:52:20,957 INFO L226 Difference]: Without dead ends: 1752 [2020-08-21 18:52:20,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=333, Invalid=1073, Unknown=0, NotChecked=0, Total=1406 [2020-08-21 18:52:20,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2020-08-21 18:52:21,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1430. [2020-08-21 18:52:21,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1430 states. [2020-08-21 18:52:21,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1674 transitions. [2020-08-21 18:52:21,254 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1674 transitions. Word has length 302 [2020-08-21 18:52:21,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:52:21,255 INFO L479 AbstractCegarLoop]: Abstraction has 1430 states and 1674 transitions. [2020-08-21 18:52:21,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 18:52:21,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1674 transitions. [2020-08-21 18:52:21,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-08-21 18:52:21,270 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:52:21,270 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:52:21,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 18:52:21,271 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:52:21,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:52:21,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1865964208, now seen corresponding path program 1 times [2020-08-21 18:52:21,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:52:21,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975831700] [2020-08-21 18:52:21,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:52:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,622 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:52:21,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:52:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:52:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:52:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:52:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:52:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:52:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:52:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:52:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:52:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 18:52:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 18:52:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:52:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:52:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 18:52:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-21 18:52:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:52:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:52:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-21 18:52:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-21 18:52:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:52:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-21 18:52:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 18:52:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:52:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:52:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-21 18:52:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:21,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-21 18:52:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:22,179 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 111 proven. 44 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-08-21 18:52:22,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975831700] [2020-08-21 18:52:22,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:52:22,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 18:52:22,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965902498] [2020-08-21 18:52:22,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 18:52:22,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:52:22,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 18:52:22,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-08-21 18:52:22,182 INFO L87 Difference]: Start difference. First operand 1430 states and 1674 transitions. Second operand 17 states. [2020-08-21 18:52:23,611 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:52:23,949 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:24,217 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:24,476 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:52:25,172 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:26,213 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:26,478 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:26,986 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:52:27,694 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:28,379 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:28,635 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:52:29,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:52:29,465 INFO L93 Difference]: Finished difference Result 2555 states and 3056 transitions. [2020-08-21 18:52:29,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-21 18:52:29,465 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 308 [2020-08-21 18:52:29,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:52:29,475 INFO L225 Difference]: With dead ends: 2555 [2020-08-21 18:52:29,475 INFO L226 Difference]: Without dead ends: 1457 [2020-08-21 18:52:29,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=370, Invalid=1436, Unknown=0, NotChecked=0, Total=1806 [2020-08-21 18:52:29,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2020-08-21 18:52:29,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1403. [2020-08-21 18:52:29,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1403 states. [2020-08-21 18:52:29,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1626 transitions. [2020-08-21 18:52:29,731 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1626 transitions. Word has length 308 [2020-08-21 18:52:29,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:52:29,731 INFO L479 AbstractCegarLoop]: Abstraction has 1403 states and 1626 transitions. [2020-08-21 18:52:29,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 18:52:29,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1626 transitions. [2020-08-21 18:52:29,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-08-21 18:52:29,741 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:52:29,741 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:52:29,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 18:52:29,741 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:52:29,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:52:29,742 INFO L82 PathProgramCache]: Analyzing trace with hash 2055130084, now seen corresponding path program 1 times [2020-08-21 18:52:29,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:52:29,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498901507] [2020-08-21 18:52:29,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:52:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,038 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:52:30,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:52:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:52:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:52:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:52:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:52:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:52:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:52:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:52:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:52:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 18:52:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 18:52:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:52:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:52:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 18:52:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-21 18:52:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:52:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:52:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:52:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-08-21 18:52:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-08-21 18:52:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:52:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-21 18:52:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:52:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-21 18:52:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:52:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:52:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:52:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:52:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-21 18:52:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-21 18:52:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:52:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 82 proven. 4 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-08-21 18:52:30,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498901507] [2020-08-21 18:52:30,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:52:30,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 18:52:30,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809921660] [2020-08-21 18:52:30,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:52:30,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:52:30,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:52:30,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:52:30,355 INFO L87 Difference]: Start difference. First operand 1403 states and 1626 transitions. Second operand 9 states. [2020-08-21 18:52:31,300 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 189