/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=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:56:46,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:56:46,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:56:46,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:56:46,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:56:46,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:56:46,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:56:46,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:56:46,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:56:46,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:56:46,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:56:46,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:56:46,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:56:46,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:56:46,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:56:46,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:56:46,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:56:46,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:56:46,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:56:46,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:56:46,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:56:46,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:56:46,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:56:46,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:56:46,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:56:46,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:56:46,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:56:46,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:56:46,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:56:46,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:56:46,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:56:46,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:56:46,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:56:46,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:56:46,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:56:46,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:56:46,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:56:46,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:56:46,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:56:46,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:56:46,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:56:46,372 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 00:56:46,394 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:56:46,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:56:46,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:56:46,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:56:46,396 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:56:46,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:56:46,396 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:56:46,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:56:46,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:56:46,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:56:46,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:56:46,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:56:46,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:56:46,398 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:56:46,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:56:46,398 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:56:46,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:56:46,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:56:46,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:56:46,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:56:46,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:56:46,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:56:46,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:56:46,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:56:46,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:56:46,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:56:46,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:56:46,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:56:46,401 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:56:46,401 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=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 00:56:46,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:56:46,729 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:56:46,733 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:56:46,734 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:56:46,735 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:56:46,735 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product37.cil.c [2020-08-19 00:56:46,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/752ffc484/9e96578f02b940c98c08084eb401eff5/FLAG700e592dd [2020-08-19 00:56:47,320 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:56:47,321 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product37.cil.c [2020-08-19 00:56:47,336 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/752ffc484/9e96578f02b940c98c08084eb401eff5/FLAG700e592dd [2020-08-19 00:56:47,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/752ffc484/9e96578f02b940c98c08084eb401eff5 [2020-08-19 00:56:47,630 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:56:47,632 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:56:47,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:56:47,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:56:47,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:56:47,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:56:47" (1/1) ... [2020-08-19 00:56:47,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:56:47, skipping insertion in model container [2020-08-19 00:56:47,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:56:47" (1/1) ... [2020-08-19 00:56:47,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:56:47,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:56:48,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:56:48,174 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:56:48,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:56:48,319 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:56:48,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:56:48 WrapperNode [2020-08-19 00:56:48,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:56:48,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:56:48,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:56:48,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:56:48,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:56:48" (1/1) ... [2020-08-19 00:56:48,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:56:48" (1/1) ... [2020-08-19 00:56:48,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:56:48" (1/1) ... [2020-08-19 00:56:48,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:56:48" (1/1) ... [2020-08-19 00:56:48,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:56:48" (1/1) ... [2020-08-19 00:56:48,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:56:48" (1/1) ... [2020-08-19 00:56:48,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:56:48" (1/1) ... [2020-08-19 00:56:48,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:56:48,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:56:48,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:56:48,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:56:48,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:56:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:56:48,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:56:48,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:56:48,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:56:48,494 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:56:48,494 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:56:48,494 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:56:48,494 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:56:48,495 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:56:48,495 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:56:48,496 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:56:48,496 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:56:48,496 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:56:48,496 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:56:48,496 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:56:48,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 00:56:48,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 00:56:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:56:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:56:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:56:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:56:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:56:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:56:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:56:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:56:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:56:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:56:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:56:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:56:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:56:48,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:56:48,501 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:56:48,501 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:56:48,501 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:56:48,501 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:56:48,501 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:56:48,502 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:56:48,502 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:56:48,502 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:56:48,502 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:56:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:56:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:56:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:56:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:56:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:56:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:56:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:56:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:56:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:56:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:56:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:56:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:56:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 00:56:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:56:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:56:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:56:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:56:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:56:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:56:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:56:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:56:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:56:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:56:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:56:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 00:56:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:56:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:56:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:56:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:56:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:56:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:56:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:56:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:56:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:56:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:56:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:56:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:56:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:56:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:56:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:56:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:56:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:56:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:56:48,513 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:56:48,514 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:56:48,514 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:56:48,514 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:56:48,515 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:56:48,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:56:48,515 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:56:48,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:56:48,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:56:48,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:56:49,601 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:56:49,601 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:56:49,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:56:49 BoogieIcfgContainer [2020-08-19 00:56:49,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:56:49,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:56:49,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:56:49,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:56:49,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:56:47" (1/3) ... [2020-08-19 00:56:49,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f4fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:56:49, skipping insertion in model container [2020-08-19 00:56:49,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:56:48" (2/3) ... [2020-08-19 00:56:49,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f4fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:56:49, skipping insertion in model container [2020-08-19 00:56:49,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:56:49" (3/3) ... [2020-08-19 00:56:49,624 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product37.cil.c [2020-08-19 00:56:49,635 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:56:49,644 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:56:49,660 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:56:49,688 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:56:49,689 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:56:49,689 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:56:49,689 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:56:49,689 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:56:49,690 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:56:49,690 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:56:49,690 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:56:49,712 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-08-19 00:56:49,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 00:56:49,723 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:56:49,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:56:49,725 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:56:49,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:56:49,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1991715745, now seen corresponding path program 1 times [2020-08-19 00:56:49,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:56:49,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700009640] [2020-08-19 00:56:49,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:56:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:50,438 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:56:50,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:56:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:50,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:56:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:50,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:56:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:50,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:56:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:50,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:56:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:50,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:56:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:50,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:56:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:50,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 00:56:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:50,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:56:50,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700009640] [2020-08-19 00:56:50,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:56:50,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:56:50,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522878597] [2020-08-19 00:56:50,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:56:50,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:56:50,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:56:50,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:56:50,604 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 4 states. [2020-08-19 00:56:51,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:56:51,705 INFO L93 Difference]: Finished difference Result 286 states and 375 transitions. [2020-08-19 00:56:51,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 00:56:51,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 00:56:51,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:56:51,721 INFO L225 Difference]: With dead ends: 286 [2020-08-19 00:56:51,721 INFO L226 Difference]: Without dead ends: 159 [2020-08-19 00:56:51,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:56:51,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-08-19 00:56:51,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 128. [2020-08-19 00:56:51,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-19 00:56:51,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 151 transitions. [2020-08-19 00:56:51,819 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 151 transitions. Word has length 51 [2020-08-19 00:56:51,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:56:51,820 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 151 transitions. [2020-08-19 00:56:51,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:56:51,820 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 151 transitions. [2020-08-19 00:56:51,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 00:56:51,828 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:56:51,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:56:51,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:56:51,828 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:56:51,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:56:51,829 INFO L82 PathProgramCache]: Analyzing trace with hash -392602955, now seen corresponding path program 1 times [2020-08-19 00:56:51,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:56:51,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006512152] [2020-08-19 00:56:51,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:56:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:52,206 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:56:52,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:56:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:52,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:56:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:52,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:56:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:52,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:56:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:52,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:56:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:52,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:56:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:52,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:56:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:52,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:56:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:52,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:56:52,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006512152] [2020-08-19 00:56:52,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:56:52,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 00:56:52,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265562765] [2020-08-19 00:56:52,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:56:52,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:56:52,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:56:52,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:56:52,260 INFO L87 Difference]: Start difference. First operand 128 states and 151 transitions. Second operand 5 states. [2020-08-19 00:56:52,687 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:56:53,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:56:53,535 INFO L93 Difference]: Finished difference Result 231 states and 286 transitions. [2020-08-19 00:56:53,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 00:56:53,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 00:56:53,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:56:53,540 INFO L225 Difference]: With dead ends: 231 [2020-08-19 00:56:53,540 INFO L226 Difference]: Without dead ends: 149 [2020-08-19 00:56:53,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:56:53,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-19 00:56:53,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-08-19 00:56:53,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-19 00:56:53,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2020-08-19 00:56:53,582 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 52 [2020-08-19 00:56:53,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:56:53,582 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2020-08-19 00:56:53,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:56:53,583 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2020-08-19 00:56:53,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-19 00:56:53,585 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:56:53,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:56:53,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:56:53,586 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:56:53,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:56:53,586 INFO L82 PathProgramCache]: Analyzing trace with hash -368031557, now seen corresponding path program 1 times [2020-08-19 00:56:53,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:56:53,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946619401] [2020-08-19 00:56:53,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:56:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:53,891 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:56:53,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:56:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:53,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:56:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:53,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:56:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:53,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:56:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:53,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:56:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:53,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:56:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:53,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 00:56:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:53,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:56:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:53,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:56:53,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946619401] [2020-08-19 00:56:53,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:56:53,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:56:53,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494731388] [2020-08-19 00:56:53,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:56:53,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:56:53,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:56:53,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:56:53,975 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand 9 states. [2020-08-19 00:56:54,370 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:56:54,679 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:56:54,933 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:56:55,195 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:56:56,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:56:56,393 INFO L93 Difference]: Finished difference Result 240 states and 301 transitions. [2020-08-19 00:56:56,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 00:56:56,404 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-19 00:56:56,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:56:56,407 INFO L225 Difference]: With dead ends: 240 [2020-08-19 00:56:56,407 INFO L226 Difference]: Without dead ends: 149 [2020-08-19 00:56:56,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:56:56,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-19 00:56:56,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-08-19 00:56:56,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-19 00:56:56,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2020-08-19 00:56:56,444 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 56 [2020-08-19 00:56:56,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:56:56,444 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2020-08-19 00:56:56,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:56:56,445 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2020-08-19 00:56:56,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-19 00:56:56,446 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:56:56,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:56:56,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:56:56,447 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:56:56,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:56:56,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1230357120, now seen corresponding path program 1 times [2020-08-19 00:56:56,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:56:56,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583994609] [2020-08-19 00:56:56,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:56:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:56,737 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:56:56,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:56:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:56,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:56:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:56,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:56:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:56,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:56:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:56,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:56:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:56,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:56:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:56,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:56:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:56,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:56:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:56,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:56:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:56,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 00:56:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:56,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-19 00:56:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:56,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:56:56,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583994609] [2020-08-19 00:56:56,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:56:56,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 00:56:56,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037291876] [2020-08-19 00:56:56,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 00:56:56,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:56:56,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 00:56:56,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:56:56,862 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand 7 states. [2020-08-19 00:56:57,199 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:56:58,423 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:56:59,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:56:59,097 INFO L93 Difference]: Finished difference Result 334 states and 423 transitions. [2020-08-19 00:56:59,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:56:59,098 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-08-19 00:56:59,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:56:59,102 INFO L225 Difference]: With dead ends: 334 [2020-08-19 00:56:59,102 INFO L226 Difference]: Without dead ends: 243 [2020-08-19 00:56:59,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-19 00:56:59,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-08-19 00:56:59,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 197. [2020-08-19 00:56:59,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-08-19 00:56:59,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 227 transitions. [2020-08-19 00:56:59,162 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 227 transitions. Word has length 69 [2020-08-19 00:56:59,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:56:59,163 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 227 transitions. [2020-08-19 00:56:59,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 00:56:59,163 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 227 transitions. [2020-08-19 00:56:59,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 00:56:59,164 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:56:59,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:56:59,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:56:59,165 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:56:59,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:56:59,165 INFO L82 PathProgramCache]: Analyzing trace with hash 810215565, now seen corresponding path program 1 times [2020-08-19 00:56:59,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:56:59,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295001254] [2020-08-19 00:56:59,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:56:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:59,448 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:56:59,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:56:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:59,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:56:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:59,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:56:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:59,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:56:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:59,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:56:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:59,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:56:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:59,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:56:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:59,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:56:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:59,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:56:59,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:59,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:59,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:56:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:59,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-19 00:56:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:59,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 00:56:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:59,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:56:59,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295001254] [2020-08-19 00:56:59,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:56:59,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:56:59,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243931799] [2020-08-19 00:56:59,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:56:59,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:56:59,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:56:59,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:56:59,586 INFO L87 Difference]: Start difference. First operand 197 states and 227 transitions. Second operand 9 states. [2020-08-19 00:56:59,920 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:01,128 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:01,393 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:01,632 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:01,848 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:02,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:02,747 INFO L93 Difference]: Finished difference Result 582 states and 737 transitions. [2020-08-19 00:57:02,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 00:57:02,747 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-19 00:57:02,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:02,754 INFO L225 Difference]: With dead ends: 582 [2020-08-19 00:57:02,754 INFO L226 Difference]: Without dead ends: 413 [2020-08-19 00:57:02,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 00:57:02,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-08-19 00:57:02,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 342. [2020-08-19 00:57:02,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-08-19 00:57:02,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 394 transitions. [2020-08-19 00:57:02,852 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 394 transitions. Word has length 83 [2020-08-19 00:57:02,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:02,853 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 394 transitions. [2020-08-19 00:57:02,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:57:02,853 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 394 transitions. [2020-08-19 00:57:02,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-19 00:57:02,855 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:02,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:02,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:57:02,856 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:02,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:02,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1817856655, now seen corresponding path program 1 times [2020-08-19 00:57:02,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:02,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309432043] [2020-08-19 00:57:02,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:03,143 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:03,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:03,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:03,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:03,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:03,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:03,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:03,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:57:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:03,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:57:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:03,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:03,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:03,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:57:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:03,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:57:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:03,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-19 00:57:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:03,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 00:57:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:03,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:03,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309432043] [2020-08-19 00:57:03,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:03,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:57:03,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066726716] [2020-08-19 00:57:03,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:57:03,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:03,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:57:03,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:57:03,261 INFO L87 Difference]: Start difference. First operand 342 states and 394 transitions. Second operand 10 states. [2020-08-19 00:57:03,656 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:04,756 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:05,004 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:05,241 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:05,519 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:06,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:06,622 INFO L93 Difference]: Finished difference Result 762 states and 947 transitions. [2020-08-19 00:57:06,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 00:57:06,623 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-08-19 00:57:06,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:06,631 INFO L225 Difference]: With dead ends: 762 [2020-08-19 00:57:06,631 INFO L226 Difference]: Without dead ends: 448 [2020-08-19 00:57:06,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-19 00:57:06,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-08-19 00:57:06,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 341. [2020-08-19 00:57:06,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-08-19 00:57:06,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 391 transitions. [2020-08-19 00:57:06,726 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 391 transitions. Word has length 87 [2020-08-19 00:57:06,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:06,727 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 391 transitions. [2020-08-19 00:57:06,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:57:06,727 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 391 transitions. [2020-08-19 00:57:06,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 00:57:06,729 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:06,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:06,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:57:06,729 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:06,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:06,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1046149773, now seen corresponding path program 1 times [2020-08-19 00:57:06,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:06,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354260998] [2020-08-19 00:57:06,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:06,990 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:06,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:07,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:07,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:07,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:07,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:07,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:07,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:57:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:07,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:57:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:07,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:07,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:07,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:57:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:07,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:57:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:07,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 00:57:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:07,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 00:57:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:07,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:07,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354260998] [2020-08-19 00:57:07,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:07,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:57:07,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514852254] [2020-08-19 00:57:07,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:57:07,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:07,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:57:07,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:57:07,153 INFO L87 Difference]: Start difference. First operand 341 states and 391 transitions. Second operand 10 states. [2020-08-19 00:57:08,045 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:08,291 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:57:08,526 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:08,754 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:09,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:09,762 INFO L93 Difference]: Finished difference Result 765 states and 956 transitions. [2020-08-19 00:57:09,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 00:57:09,764 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-19 00:57:09,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:09,767 INFO L225 Difference]: With dead ends: 765 [2020-08-19 00:57:09,768 INFO L226 Difference]: Without dead ends: 452 [2020-08-19 00:57:09,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:57:09,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-08-19 00:57:09,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 351. [2020-08-19 00:57:09,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-08-19 00:57:09,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 401 transitions. [2020-08-19 00:57:09,841 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 401 transitions. Word has length 88 [2020-08-19 00:57:09,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:09,842 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 401 transitions. [2020-08-19 00:57:09,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:57:09,842 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 401 transitions. [2020-08-19 00:57:09,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 00:57:09,843 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:09,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:09,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:57:09,844 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:09,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:09,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1747749647, now seen corresponding path program 1 times [2020-08-19 00:57:09,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:09,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248547018] [2020-08-19 00:57:09,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,146 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:10,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:57:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:57:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:57:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:57:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 00:57:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 00:57:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:10,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248547018] [2020-08-19 00:57:10,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:10,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 00:57:10,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140398379] [2020-08-19 00:57:10,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 00:57:10,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:10,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 00:57:10,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:57:10,314 INFO L87 Difference]: Start difference. First operand 351 states and 401 transitions. Second operand 12 states. [2020-08-19 00:57:10,908 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:11,297 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:11,521 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:12,128 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:12,382 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:12,629 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:13,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:13,813 INFO L93 Difference]: Finished difference Result 789 states and 998 transitions. [2020-08-19 00:57:13,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:57:13,817 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2020-08-19 00:57:13,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:13,821 INFO L225 Difference]: With dead ends: 789 [2020-08-19 00:57:13,822 INFO L226 Difference]: Without dead ends: 466 [2020-08-19 00:57:13,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 00:57:13,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-08-19 00:57:13,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 359. [2020-08-19 00:57:13,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-08-19 00:57:13,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 409 transitions. [2020-08-19 00:57:13,896 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 409 transitions. Word has length 88 [2020-08-19 00:57:13,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:13,896 INFO L479 AbstractCegarLoop]: Abstraction has 359 states and 409 transitions. [2020-08-19 00:57:13,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 00:57:13,897 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 409 transitions. [2020-08-19 00:57:13,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 00:57:13,898 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:13,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:13,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:57:13,899 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:13,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:13,899 INFO L82 PathProgramCache]: Analyzing trace with hash -821736752, now seen corresponding path program 1 times [2020-08-19 00:57:13,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:13,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483372500] [2020-08-19 00:57:13,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,188 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:14,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:57:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:57:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:57:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:57:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 00:57:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 00:57:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:14,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483372500] [2020-08-19 00:57:14,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:14,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:57:14,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116903874] [2020-08-19 00:57:14,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:57:14,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:14,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:57:14,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:57:14,323 INFO L87 Difference]: Start difference. First operand 359 states and 409 transitions. Second operand 8 states. [2020-08-19 00:57:14,740 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:15,284 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:17,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:17,542 INFO L93 Difference]: Finished difference Result 1108 states and 1449 transitions. [2020-08-19 00:57:17,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 00:57:17,543 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-08-19 00:57:17,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:17,549 INFO L225 Difference]: With dead ends: 1108 [2020-08-19 00:57:17,549 INFO L226 Difference]: Without dead ends: 777 [2020-08-19 00:57:17,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-19 00:57:17,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2020-08-19 00:57:17,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 645. [2020-08-19 00:57:17,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2020-08-19 00:57:17,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 763 transitions. [2020-08-19 00:57:17,686 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 763 transitions. Word has length 88 [2020-08-19 00:57:17,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:17,688 INFO L479 AbstractCegarLoop]: Abstraction has 645 states and 763 transitions. [2020-08-19 00:57:17,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:57:17,688 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 763 transitions. [2020-08-19 00:57:17,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 00:57:17,692 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:17,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:17,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:57:17,693 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:17,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:17,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1708334166, now seen corresponding path program 1 times [2020-08-19 00:57:17,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:17,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649870737] [2020-08-19 00:57:17,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:17,957 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:17,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:17,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:17,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:17,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:17,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:17,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:57:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:57:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:57:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:57:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:57:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 00:57:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 00:57:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:18,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649870737] [2020-08-19 00:57:18,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:18,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:57:18,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000694074] [2020-08-19 00:57:18,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:57:18,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:18,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:57:18,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:57:18,055 INFO L87 Difference]: Start difference. First operand 645 states and 763 transitions. Second operand 8 states. [2020-08-19 00:57:18,431 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:20,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:20,689 INFO L93 Difference]: Finished difference Result 1272 states and 1654 transitions. [2020-08-19 00:57:20,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 00:57:20,690 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-08-19 00:57:20,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:20,699 INFO L225 Difference]: With dead ends: 1272 [2020-08-19 00:57:20,699 INFO L226 Difference]: Without dead ends: 1269 [2020-08-19 00:57:20,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2020-08-19 00:57:20,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2020-08-19 00:57:20,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1071. [2020-08-19 00:57:20,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2020-08-19 00:57:20,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1280 transitions. [2020-08-19 00:57:20,893 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1280 transitions. Word has length 92 [2020-08-19 00:57:20,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:20,893 INFO L479 AbstractCegarLoop]: Abstraction has 1071 states and 1280 transitions. [2020-08-19 00:57:20,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:57:20,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1280 transitions. [2020-08-19 00:57:20,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 00:57:20,906 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:20,908 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:20,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 00:57:20,909 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:20,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:20,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1546611492, now seen corresponding path program 1 times [2020-08-19 00:57:20,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:20,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125302493] [2020-08-19 00:57:20,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,234 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:21,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:57:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:57:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:57:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:57:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:57:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:57:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:57:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:57:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 00:57:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 00:57:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:57:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 00:57:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 00:57:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-19 00:57:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:21,661 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-19 00:57:21,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125302493] [2020-08-19 00:57:21,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:57:21,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 00:57:21,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766751319] [2020-08-19 00:57:21,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 00:57:21,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:21,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 00:57:21,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 00:57:21,666 INFO L87 Difference]: Start difference. First operand 1071 states and 1280 transitions. Second operand 19 states. [2020-08-19 00:57:22,531 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:22,895 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:57:23,150 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:57:23,422 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:57:24,102 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:25,204 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:25,589 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:26,879 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:27,150 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:27,431 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:27,729 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:27,991 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:28,264 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:28,566 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:28,825 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:29,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:29,560 INFO L93 Difference]: Finished difference Result 2024 states and 2482 transitions. [2020-08-19 00:57:29,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-08-19 00:57:29,561 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 150 [2020-08-19 00:57:29,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:29,567 INFO L225 Difference]: With dead ends: 2024 [2020-08-19 00:57:29,568 INFO L226 Difference]: Without dead ends: 981 [2020-08-19 00:57:29,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=510, Invalid=2352, Unknown=0, NotChecked=0, Total=2862 [2020-08-19 00:57:29,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2020-08-19 00:57:29,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 858. [2020-08-19 00:57:29,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2020-08-19 00:57:29,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 979 transitions. [2020-08-19 00:57:29,741 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 979 transitions. Word has length 150 [2020-08-19 00:57:29,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:29,744 INFO L479 AbstractCegarLoop]: Abstraction has 858 states and 979 transitions. [2020-08-19 00:57:29,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 00:57:29,744 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 979 transitions. [2020-08-19 00:57:29,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 00:57:29,747 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:29,748 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:29,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 00:57:29,748 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:29,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:29,749 INFO L82 PathProgramCache]: Analyzing trace with hash 182941043, now seen corresponding path program 1 times [2020-08-19 00:57:29,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:29,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534720588] [2020-08-19 00:57:29,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,191 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:30,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:57:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:57:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:57:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:57:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:57:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:57:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:57:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:57:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 00:57:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:57:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:57:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 00:57:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-19 00:57:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,498 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-19 00:57:30,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534720588] [2020-08-19 00:57:30,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:57:30,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 00:57:30,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191139160] [2020-08-19 00:57:30,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 00:57:30,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:30,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 00:57:30,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-19 00:57:30,501 INFO L87 Difference]: Start difference. First operand 858 states and 979 transitions. Second operand 13 states. [2020-08-19 00:57:31,303 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:31,622 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:31,849 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:32,785 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:34,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:34,331 INFO L93 Difference]: Finished difference Result 1517 states and 1820 transitions. [2020-08-19 00:57:34,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 00:57:34,331 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 150 [2020-08-19 00:57:34,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:34,332 INFO L225 Difference]: With dead ends: 1517 [2020-08-19 00:57:34,332 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 00:57:34,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2020-08-19 00:57:34,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 00:57:34,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 00:57:34,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 00:57:34,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 00:57:34,338 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 150 [2020-08-19 00:57:34,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:34,339 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 00:57:34,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 00:57:34,339 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 00:57:34,339 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 00:57:34,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 00:57:34,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 00:57:35,323 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2020-08-19 00:57:35,636 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 201 [2020-08-19 00:57:36,361 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 202 [2020-08-19 00:57:36,712 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2020-08-19 00:57:36,967 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 202 [2020-08-19 00:57:37,673 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 282 [2020-08-19 00:57:38,661 WARN L193 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 297 [2020-08-19 00:57:39,803 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2020-08-19 00:57:39,960 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 201 [2020-08-19 00:57:40,342 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 202 [2020-08-19 00:57:40,502 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2020-08-19 00:57:41,306 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 282 [2020-08-19 00:57:42,252 WARN L193 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 310 [2020-08-19 00:57:44,074 WARN L193 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 25 [2020-08-19 00:57:44,249 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 1 [2020-08-19 00:57:44,433 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 1 [2020-08-19 00:57:44,616 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 27 [2020-08-19 00:57:45,147 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 24