/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:26:24,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:26:24,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:26:24,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:26:24,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:26:24,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:26:24,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:26:24,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:26:24,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:26:24,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:26:24,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:26:24,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:26:24,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:26:24,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:26:24,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:26:24,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:26:24,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:26:24,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:26:24,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:26:24,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:26:24,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:26:24,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:26:24,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:26:24,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:26:24,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:26:24,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:26:24,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:26:24,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:26:24,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:26:24,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:26:24,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:26:24,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:26:24,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:26:24,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:26:24,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:26:24,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:26:24,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:26:24,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:26:24,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:26:24,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:26:24,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:26:24,352 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 23:26:24,386 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:26:24,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:26:24,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:26:24,391 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:26:24,391 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:26:24,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:26:24,391 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:26:24,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:26:24,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:26:24,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:26:24,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:26:24,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:26:24,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:26:24,395 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:26:24,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:26:24,395 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:26:24,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:26:24,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:26:24,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:26:24,396 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:26:24,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:26:24,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:26:24,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:26:24,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:26:24,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:26:24,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:26:24,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:26:24,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:26:24,401 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:26:24,401 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:26:24,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:26:24,712 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:26:24,716 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:26:24,717 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:26:24,718 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:26:24,718 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product46.cil.c [2020-08-18 23:26:24,786 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7c6ff87b/95c02accff79478ab0da0a75190d9500/FLAGf89c54588 [2020-08-18 23:26:25,340 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:26:25,341 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product46.cil.c [2020-08-18 23:26:25,358 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7c6ff87b/95c02accff79478ab0da0a75190d9500/FLAGf89c54588 [2020-08-18 23:26:25,594 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7c6ff87b/95c02accff79478ab0da0a75190d9500 [2020-08-18 23:26:25,602 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:26:25,604 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:26:25,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:26:25,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:26:25,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:26:25,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:26:25" (1/1) ... [2020-08-18 23:26:25,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd92e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:26:25, skipping insertion in model container [2020-08-18 23:26:25,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:26:25" (1/1) ... [2020-08-18 23:26:25,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:26:25,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:26:26,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:26:26,111 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:26:26,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:26:26,249 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:26:26,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:26:26 WrapperNode [2020-08-18 23:26:26,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:26:26,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:26:26,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:26:26,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:26:26,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:26:26" (1/1) ... [2020-08-18 23:26:26,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:26:26" (1/1) ... [2020-08-18 23:26:26,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:26:26" (1/1) ... [2020-08-18 23:26:26,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:26:26" (1/1) ... [2020-08-18 23:26:26,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:26:26" (1/1) ... [2020-08-18 23:26:26,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:26:26" (1/1) ... [2020-08-18 23:26:26,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:26:26" (1/1) ... [2020-08-18 23:26:26,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:26:26,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:26:26,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:26:26,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:26:26,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:26:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:26:26,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:26:26,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:26:26,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 23:26:26,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 23:26:26,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 23:26:26,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 23:26:26,472 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 23:26:26,472 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 23:26:26,472 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 23:26:26,473 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 23:26:26,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:26:26,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 23:26:26,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 23:26:26,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 23:26:26,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 23:26:26,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 23:26:26,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 23:26:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 23:26:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 23:26:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 23:26:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 23:26:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 23:26:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 23:26:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 23:26:26,476 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 23:26:26,476 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 23:26:26,477 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 23:26:26,477 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 23:26:26,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 23:26:26,477 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 23:26:26,477 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 23:26:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 23:26:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 23:26:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 23:26:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 23:26:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 23:26:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 23:26:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 23:26:26,479 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 23:26:26,479 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 23:26:26,479 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 23:26:26,479 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 23:26:26,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:26:26,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 23:26:26,480 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 23:26:26,480 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 23:26:26,480 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 23:26:26,480 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 23:26:26,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 23:26:26,481 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 23:26:26,481 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 23:26:26,481 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 23:26:26,481 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 23:26:26,482 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 23:26:26,482 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 23:26:26,482 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 23:26:26,482 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 23:26:26,483 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 23:26:26,483 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 23:26:26,483 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 23:26:26,483 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 23:26:26,483 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 23:26:26,483 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 23:26:26,483 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:26:26,484 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 23:26:26,484 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 23:26:26,484 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 23:26:26,484 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 23:26:26,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 23:26:26,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 23:26:26,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 23:26:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 23:26:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 23:26:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 23:26:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 23:26:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 23:26:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 23:26:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 23:26:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 23:26:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 23:26:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 23:26:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 23:26:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 23:26:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 23:26:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 23:26:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 23:26:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 23:26:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 23:26:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 23:26:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 23:26:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 23:26:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 23:26:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 23:26:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 23:26:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 23:26:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:26:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 23:26:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:26:27,622 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:26:27,622 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 23:26:27,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:26:27 BoogieIcfgContainer [2020-08-18 23:26:27,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:26:27,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:26:27,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:26:27,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:26:27,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:26:25" (1/3) ... [2020-08-18 23:26:27,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3182e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:26:27, skipping insertion in model container [2020-08-18 23:26:27,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:26:26" (2/3) ... [2020-08-18 23:26:27,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3182e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:26:27, skipping insertion in model container [2020-08-18 23:26:27,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:26:27" (3/3) ... [2020-08-18 23:26:27,637 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product46.cil.c [2020-08-18 23:26:27,649 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:26:27,657 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:26:27,672 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:26:27,697 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:26:27,697 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:26:27,698 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:26:27,698 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:26:27,698 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:26:27,698 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:26:27,699 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:26:27,699 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:26:27,721 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-08-18 23:26:27,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 23:26:27,732 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:26:27,733 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] [2020-08-18 23:26:27,734 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:26:27,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:26:27,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1347369271, now seen corresponding path program 1 times [2020-08-18 23:26:27,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:26:27,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206588544] [2020-08-18 23:26:27,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:26:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:28,397 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:26:28,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:28,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:26:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:28,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:28,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:28,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:26:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:28,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:28,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:26:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:28,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:28,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 23:26:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:28,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 23:26:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:28,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 23:26:28,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206588544] [2020-08-18 23:26:28,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:26:28,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:26:28,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063969646] [2020-08-18 23:26:28,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:26:28,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:26:28,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:26:28,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:26:28,541 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 4 states. [2020-08-18 23:26:29,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:26:29,575 INFO L93 Difference]: Finished difference Result 325 states and 415 transitions. [2020-08-18 23:26:29,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 23:26:29,578 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 23:26:29,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:26:29,595 INFO L225 Difference]: With dead ends: 325 [2020-08-18 23:26:29,595 INFO L226 Difference]: Without dead ends: 179 [2020-08-18 23:26:29,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:26:29,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-18 23:26:29,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 147. [2020-08-18 23:26:29,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-08-18 23:26:29,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 172 transitions. [2020-08-18 23:26:29,719 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 172 transitions. Word has length 59 [2020-08-18 23:26:29,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:26:29,720 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 172 transitions. [2020-08-18 23:26:29,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:26:29,721 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 172 transitions. [2020-08-18 23:26:29,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 23:26:29,731 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:26:29,732 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] [2020-08-18 23:26:29,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:26:29,732 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:26:29,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:26:29,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1814034675, now seen corresponding path program 1 times [2020-08-18 23:26:29,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:26:29,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365683473] [2020-08-18 23:26:29,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:26:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:30,119 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:26:30,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:30,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:26:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:30,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:30,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:30,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:26:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:30,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:30,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 23:26:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:30,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:30,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 23:26:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:30,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 23:26:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:30,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 23:26:30,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365683473] [2020-08-18 23:26:30,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:26:30,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 23:26:30,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390096033] [2020-08-18 23:26:30,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 23:26:30,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:26:30,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 23:26:30,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:26:30,183 INFO L87 Difference]: Start difference. First operand 147 states and 172 transitions. Second operand 5 states. [2020-08-18 23:26:30,643 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:31,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:26:31,574 INFO L93 Difference]: Finished difference Result 266 states and 323 transitions. [2020-08-18 23:26:31,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 23:26:31,576 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 23:26:31,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:26:31,580 INFO L225 Difference]: With dead ends: 266 [2020-08-18 23:26:31,580 INFO L226 Difference]: Without dead ends: 169 [2020-08-18 23:26:31,582 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 [2020-08-18 23:26:31,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-18 23:26:31,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 138. [2020-08-18 23:26:31,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-18 23:26:31,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 160 transitions. [2020-08-18 23:26:31,621 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 160 transitions. Word has length 60 [2020-08-18 23:26:31,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:26:31,621 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 160 transitions. [2020-08-18 23:26:31,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 23:26:31,622 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 160 transitions. [2020-08-18 23:26:31,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 23:26:31,623 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:26:31,624 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] [2020-08-18 23:26:31,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:26:31,624 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:26:31,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:26:31,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1518926539, now seen corresponding path program 1 times [2020-08-18 23:26:31,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:26:31,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090436693] [2020-08-18 23:26:31,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:26:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:31,990 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:26:31,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:32,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:26:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:32,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:32,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:32,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:26:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:32,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:32,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:26:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:32,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:32,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 23:26:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:32,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:26:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:32,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 23:26:32,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090436693] [2020-08-18 23:26:32,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:26:32,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:26:32,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960519409] [2020-08-18 23:26:32,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:26:32,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:26:32,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:26:32,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:26:32,139 INFO L87 Difference]: Start difference. First operand 138 states and 160 transitions. Second operand 9 states. [2020-08-18 23:26:32,518 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:26:32,827 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:26:33,109 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:26:33,346 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:26:34,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:26:34,603 INFO L93 Difference]: Finished difference Result 279 states and 342 transitions. [2020-08-18 23:26:34,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 23:26:34,604 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-18 23:26:34,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:26:34,607 INFO L225 Difference]: With dead ends: 279 [2020-08-18 23:26:34,608 INFO L226 Difference]: Without dead ends: 169 [2020-08-18 23:26:34,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 23:26:34,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-18 23:26:34,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 138. [2020-08-18 23:26:34,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-18 23:26:34,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 159 transitions. [2020-08-18 23:26:34,651 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 159 transitions. Word has length 65 [2020-08-18 23:26:34,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:26:34,652 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 159 transitions. [2020-08-18 23:26:34,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:26:34,652 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 159 transitions. [2020-08-18 23:26:34,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 23:26:34,654 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:26:34,654 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] [2020-08-18 23:26:34,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:26:34,655 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:26:34,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:26:34,655 INFO L82 PathProgramCache]: Analyzing trace with hash 793046871, now seen corresponding path program 1 times [2020-08-18 23:26:34,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:26:34,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933072758] [2020-08-18 23:26:34,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:26:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:34,967 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:26:34,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:35,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:26:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:35,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:35,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:35,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:26:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:35,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:35,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:26:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:35,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:35,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 23:26:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:35,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:35,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:35,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 23:26:35,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:35,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 23:26:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:35,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 23:26:35,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933072758] [2020-08-18 23:26:35,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:26:35,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 23:26:35,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621456874] [2020-08-18 23:26:35,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 23:26:35,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:26:35,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 23:26:35,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 23:26:35,072 INFO L87 Difference]: Start difference. First operand 138 states and 159 transitions. Second operand 7 states. [2020-08-18 23:26:35,436 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:26:36,978 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:37,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:26:37,537 INFO L93 Difference]: Finished difference Result 391 states and 483 transitions. [2020-08-18 23:26:37,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 23:26:37,538 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-08-18 23:26:37,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:26:37,542 INFO L225 Difference]: With dead ends: 391 [2020-08-18 23:26:37,543 INFO L226 Difference]: Without dead ends: 281 [2020-08-18 23:26:37,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 23:26:37,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-08-18 23:26:37,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 235. [2020-08-18 23:26:37,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-08-18 23:26:37,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 267 transitions. [2020-08-18 23:26:37,629 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 267 transitions. Word has length 78 [2020-08-18 23:26:37,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:26:37,630 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 267 transitions. [2020-08-18 23:26:37,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 23:26:37,630 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 267 transitions. [2020-08-18 23:26:37,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 23:26:37,632 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:26:37,632 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] [2020-08-18 23:26:37,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 23:26:37,633 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:26:37,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:26:37,633 INFO L82 PathProgramCache]: Analyzing trace with hash -856462191, now seen corresponding path program 1 times [2020-08-18 23:26:37,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:26:37,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691443942] [2020-08-18 23:26:37,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:26:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:37,942 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:26:37,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:38,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:26:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:38,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:38,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:38,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:26:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:38,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:38,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:26:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:38,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:38,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 23:26:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:38,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:38,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:38,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:38,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:26:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:38,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 23:26:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:38,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 23:26:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 23:26:38,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691443942] [2020-08-18 23:26:38,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:26:38,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:26:38,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325095956] [2020-08-18 23:26:38,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:26:38,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:26:38,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:26:38,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:26:38,120 INFO L87 Difference]: Start difference. First operand 235 states and 267 transitions. Second operand 9 states. [2020-08-18 23:26:38,510 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:26:39,187 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:26:40,084 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:26:40,376 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:40,837 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:26:41,089 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:26:41,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:26:41,686 INFO L93 Difference]: Finished difference Result 487 states and 586 transitions. [2020-08-18 23:26:41,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 23:26:41,689 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-18 23:26:41,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:26:41,692 INFO L225 Difference]: With dead ends: 487 [2020-08-18 23:26:41,692 INFO L226 Difference]: Without dead ends: 280 [2020-08-18 23:26:41,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 23:26:41,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-08-18 23:26:41,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 234. [2020-08-18 23:26:41,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-08-18 23:26:41,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 264 transitions. [2020-08-18 23:26:41,742 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 264 transitions. Word has length 92 [2020-08-18 23:26:41,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:26:41,743 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 264 transitions. [2020-08-18 23:26:41,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:26:41,743 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 264 transitions. [2020-08-18 23:26:41,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 23:26:41,745 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:26:41,745 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, 1, 1] [2020-08-18 23:26:41,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 23:26:41,745 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:26:41,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:26:41,746 INFO L82 PathProgramCache]: Analyzing trace with hash -357754488, now seen corresponding path program 1 times [2020-08-18 23:26:41,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:26:41,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788446879] [2020-08-18 23:26:41,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:26:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:41,984 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:26:41,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:42,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:26:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:42,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:42,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:42,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:26:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:42,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:42,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:26:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:42,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:42,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 23:26:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:42,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:42,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:42,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:42,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:26:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:42,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:42,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:42,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:42,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 23:26:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:42,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 23:26:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:42,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 23:26:42,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788446879] [2020-08-18 23:26:42,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:26:42,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:26:42,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372342707] [2020-08-18 23:26:42,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:26:42,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:26:42,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:26:42,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:26:42,162 INFO L87 Difference]: Start difference. First operand 234 states and 264 transitions. Second operand 9 states. [2020-08-18 23:26:43,222 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:43,449 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:26:43,689 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:43,920 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:44,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:26:44,613 INFO L93 Difference]: Finished difference Result 487 states and 589 transitions. [2020-08-18 23:26:44,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 23:26:44,615 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-08-18 23:26:44,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:26:44,621 INFO L225 Difference]: With dead ends: 487 [2020-08-18 23:26:44,621 INFO L226 Difference]: Without dead ends: 281 [2020-08-18 23:26:44,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 23:26:44,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-08-18 23:26:44,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 239. [2020-08-18 23:26:44,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-18 23:26:44,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 269 transitions. [2020-08-18 23:26:44,688 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 269 transitions. Word has length 108 [2020-08-18 23:26:44,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:26:44,689 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 269 transitions. [2020-08-18 23:26:44,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:26:44,689 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 269 transitions. [2020-08-18 23:26:44,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 23:26:44,692 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:26:44,694 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, 1, 1] [2020-08-18 23:26:44,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 23:26:44,695 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:26:44,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:26:44,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1570518214, now seen corresponding path program 1 times [2020-08-18 23:26:44,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:26:44,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86554649] [2020-08-18 23:26:44,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:26:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:45,003 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:26:45,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:45,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:26:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:45,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:45,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:45,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:26:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:45,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:45,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:26:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:45,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:45,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 23:26:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:45,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:45,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:45,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:45,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:26:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:45,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:45,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:45,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:45,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 23:26:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:45,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 23:26:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:45,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 23:26:45,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86554649] [2020-08-18 23:26:45,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:26:45,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 23:26:45,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672412051] [2020-08-18 23:26:45,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 23:26:45,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:26:45,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 23:26:45,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:26:45,175 INFO L87 Difference]: Start difference. First operand 239 states and 269 transitions. Second operand 11 states. [2020-08-18 23:26:46,270 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:26:46,502 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:46,727 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:47,464 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:47,728 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:47,983 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:48,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:26:48,970 INFO L93 Difference]: Finished difference Result 497 states and 600 transitions. [2020-08-18 23:26:48,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 23:26:48,970 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-18 23:26:48,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:26:48,973 INFO L225 Difference]: With dead ends: 497 [2020-08-18 23:26:48,974 INFO L226 Difference]: Without dead ends: 286 [2020-08-18 23:26:48,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 23:26:48,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-08-18 23:26:49,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 243. [2020-08-18 23:26:49,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-08-18 23:26:49,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 273 transitions. [2020-08-18 23:26:49,015 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 273 transitions. Word has length 108 [2020-08-18 23:26:49,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:26:49,016 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 273 transitions. [2020-08-18 23:26:49,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 23:26:49,016 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 273 transitions. [2020-08-18 23:26:49,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 23:26:49,018 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:26:49,018 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, 1, 1] [2020-08-18 23:26:49,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 23:26:49,019 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:26:49,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:26:49,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1329978085, now seen corresponding path program 1 times [2020-08-18 23:26:49,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:26:49,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561121086] [2020-08-18 23:26:49,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:26:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:49,317 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:26:49,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:49,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:26:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:49,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:49,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:49,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:26:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:49,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:49,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:26:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:49,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:49,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 23:26:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:49,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:49,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:49,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:49,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:26:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:49,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:49,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:49,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:49,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 23:26:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:49,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 23:26:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:49,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 23:26:49,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561121086] [2020-08-18 23:26:49,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:26:49,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 23:26:49,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237305775] [2020-08-18 23:26:49,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 23:26:49,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:26:49,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 23:26:49,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 23:26:49,500 INFO L87 Difference]: Start difference. First operand 243 states and 273 transitions. Second operand 7 states. [2020-08-18 23:26:49,901 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:26:50,408 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:26:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:26:52,198 INFO L93 Difference]: Finished difference Result 679 states and 838 transitions. [2020-08-18 23:26:52,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 23:26:52,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-08-18 23:26:52,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:26:52,202 INFO L225 Difference]: With dead ends: 679 [2020-08-18 23:26:52,203 INFO L226 Difference]: Without dead ends: 464 [2020-08-18 23:26:52,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 23:26:52,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-08-18 23:26:52,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 422. [2020-08-18 23:26:52,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-08-18 23:26:52,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 489 transitions. [2020-08-18 23:26:52,282 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 489 transitions. Word has length 108 [2020-08-18 23:26:52,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:26:52,282 INFO L479 AbstractCegarLoop]: Abstraction has 422 states and 489 transitions. [2020-08-18 23:26:52,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 23:26:52,283 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 489 transitions. [2020-08-18 23:26:52,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-18 23:26:52,286 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:26:52,286 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, 1, 1, 1, 1, 1, 1] [2020-08-18 23:26:52,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 23:26:52,286 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:26:52,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:26:52,287 INFO L82 PathProgramCache]: Analyzing trace with hash 825673247, now seen corresponding path program 1 times [2020-08-18 23:26:52,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:26:52,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853837721] [2020-08-18 23:26:52,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:26:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,609 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:26:52,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:26:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:26:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:26:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 23:26:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 23:26:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:26:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 23:26:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 23:26:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:52,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 23:26:52,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853837721] [2020-08-18 23:26:52,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:26:52,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 23:26:52,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797461212] [2020-08-18 23:26:52,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 23:26:52,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:26:52,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 23:26:52,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:26:52,825 INFO L87 Difference]: Start difference. First operand 422 states and 489 transitions. Second operand 12 states. [2020-08-18 23:26:53,188 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:26:53,829 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:26:54,831 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:26:55,119 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:26:55,377 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:26:55,644 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:26:55,905 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:26:57,262 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:26:57,523 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:26:58,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:26:58,326 INFO L93 Difference]: Finished difference Result 1174 states and 1444 transitions. [2020-08-18 23:26:58,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 23:26:58,329 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-08-18 23:26:58,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:26:58,336 INFO L225 Difference]: With dead ends: 1174 [2020-08-18 23:26:58,337 INFO L226 Difference]: Without dead ends: 854 [2020-08-18 23:26:58,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 23:26:58,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-08-18 23:26:58,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 732. [2020-08-18 23:26:58,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-08-18 23:26:58,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 840 transitions. [2020-08-18 23:26:58,550 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 840 transitions. Word has length 112 [2020-08-18 23:26:58,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:26:58,551 INFO L479 AbstractCegarLoop]: Abstraction has 732 states and 840 transitions. [2020-08-18 23:26:58,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 23:26:58,551 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 840 transitions. [2020-08-18 23:26:58,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-18 23:26:58,554 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:26:58,555 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:26:58,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 23:26:58,556 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:26:58,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:26:58,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1258980138, now seen corresponding path program 1 times [2020-08-18 23:26:58,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:26:58,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082053685] [2020-08-18 23:26:58,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:26:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:58,927 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:26:58,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:58,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:26:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:58,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:26:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:58,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:58,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:26:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:58,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:26:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:58,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:26:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:26:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:26:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:26:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:26:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 23:26:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-18 23:26:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:26:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-18 23:26:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 23:26:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:26:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 23:26:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:26:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 23:26:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-18 23:26:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:26:59,218 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-18 23:26:59,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082053685] [2020-08-18 23:26:59,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:26:59,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 23:26:59,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828618] [2020-08-18 23:26:59,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 23:26:59,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:26:59,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 23:26:59,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 23:26:59,221 INFO L87 Difference]: Start difference. First operand 732 states and 840 transitions. Second operand 16 states. [2020-08-18 23:27:00,307 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:27:00,690 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 23:27:00,954 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 23:27:01,212 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 23:27:01,883 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:27:02,157 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:27:02,992 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 23:27:03,645 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:27:04,143 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 23:27:04,572 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:27:04,823 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:27:05,122 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:27:05,671 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:27:06,063 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:27:06,437 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 23:27:07,161 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:27:07,431 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 23:27:08,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:27:08,204 INFO L93 Difference]: Finished difference Result 1607 states and 1899 transitions. [2020-08-18 23:27:08,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-18 23:27:08,205 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 172 [2020-08-18 23:27:08,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:27:08,211 INFO L225 Difference]: With dead ends: 1607 [2020-08-18 23:27:08,211 INFO L226 Difference]: Without dead ends: 973 [2020-08-18 23:27:08,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-18 23:27:08,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2020-08-18 23:27:08,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 880. [2020-08-18 23:27:08,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-08-18 23:27:08,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1018 transitions. [2020-08-18 23:27:08,363 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1018 transitions. Word has length 172 [2020-08-18 23:27:08,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:27:08,364 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 1018 transitions. [2020-08-18 23:27:08,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 23:27:08,364 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1018 transitions. [2020-08-18 23:27:08,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-08-18 23:27:08,371 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:27:08,371 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 23:27:08,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 23:27:08,372 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:27:08,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:27:08,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1319050440, now seen corresponding path program 1 times [2020-08-18 23:27:08,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:27:08,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981991508] [2020-08-18 23:27:08,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:27:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,688 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:27:08,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:27:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:27:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:27:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:27:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:27:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:27:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:27:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:27:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:27:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:27:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:27:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:27:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:27:08,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:27:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:27:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 23:27:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 23:27:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:27:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:27:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:27:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 23:27:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:27:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 23:27:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:27:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:08,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:27:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:09,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:09,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-08-18 23:27:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:09,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:27:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:09,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:27:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:09,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:27:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:09,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 23:27:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:09,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:27:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:09,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:09,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 23:27:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:09,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 23:27:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:09,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:09,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-18 23:27:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:09,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:27:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:09,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-18 23:27:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:09,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:27:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:09,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:27:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:09,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:09,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:27:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:09,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:09,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:09,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:27:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:09,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-08-18 23:27:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:09,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-18 23:27:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:09,229 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 83 proven. 29 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2020-08-18 23:27:09,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981991508] [2020-08-18 23:27:09,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:27:09,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 23:27:09,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353879147] [2020-08-18 23:27:09,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 23:27:09,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:27:09,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 23:27:09,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 23:27:09,232 INFO L87 Difference]: Start difference. First operand 880 states and 1018 transitions. Second operand 15 states. [2020-08-18 23:27:10,799 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:27:11,073 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:27:11,314 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:27:11,561 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:27:13,025 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:27:14,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:27:14,207 INFO L93 Difference]: Finished difference Result 2336 states and 2809 transitions. [2020-08-18 23:27:14,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 23:27:14,208 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 303 [2020-08-18 23:27:14,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:27:14,217 INFO L225 Difference]: With dead ends: 2336 [2020-08-18 23:27:14,217 INFO L226 Difference]: Without dead ends: 1389 [2020-08-18 23:27:14,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 108 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-18 23:27:14,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2020-08-18 23:27:14,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1170. [2020-08-18 23:27:14,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1170 states. [2020-08-18 23:27:14,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1383 transitions. [2020-08-18 23:27:14,467 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1383 transitions. Word has length 303 [2020-08-18 23:27:14,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:27:14,468 INFO L479 AbstractCegarLoop]: Abstraction has 1170 states and 1383 transitions. [2020-08-18 23:27:14,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 23:27:14,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1383 transitions. [2020-08-18 23:27:14,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-08-18 23:27:14,475 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:27:14,475 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 23:27:14,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 23:27:14,476 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:27:14,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:27:14,476 INFO L82 PathProgramCache]: Analyzing trace with hash -919990225, now seen corresponding path program 1 times [2020-08-18 23:27:14,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:27:14,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475237838] [2020-08-18 23:27:14,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:27:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:14,876 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:27:14,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:27:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:14,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:27:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:14,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:27:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:14,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:27:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:14,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:27:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:14,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:27:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:14,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:27:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:14,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:27:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:27:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:27:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 23:27:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:27:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:27:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:27:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:27:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 23:27:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 23:27:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:27:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:27:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:27:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 23:27:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:27:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 23:27:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:27:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:27:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 23:27:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-18 23:27:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:27:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:27:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:27:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 23:27:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:27:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 23:27:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 23:27:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-18 23:27:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-18 23:27:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:27:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 23:27:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:27:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:27:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:27:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:27:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:27:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 23:27:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-18 23:27:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:27:15,486 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 91 proven. 38 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2020-08-18 23:27:15,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475237838] [2020-08-18 23:27:15,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:27:15,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 23:27:15,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145419338] [2020-08-18 23:27:15,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 23:27:15,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:27:15,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 23:27:15,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 23:27:15,491 INFO L87 Difference]: Start difference. First operand 1170 states and 1383 transitions. Second operand 16 states. [2020-08-18 23:27:16,446 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:27:16,814 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 23:27:17,161 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:27:17,515 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:27:18,279 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:27:19,235 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:27:19,505 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:27:20,008 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:27:20,668 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191