/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:05:39,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:05:39,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:05:39,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:05:39,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:05:39,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:05:39,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:05:39,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:05:39,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:05:39,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:05:39,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:05:39,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:05:39,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:05:39,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:05:39,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:05:39,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:05:39,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:05:39,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:05:39,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:05:39,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:05:39,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:05:39,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:05:39,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:05:39,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:05:39,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:05:39,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:05:39,822 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:05:39,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:05:39,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:05:39,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:05:39,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:05:39,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:05:39,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:05:39,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:05:39,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:05:39,834 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:05:39,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:05:39,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:05:39,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:05:39,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:05:39,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:05:39,839 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 [2020-09-21 10:05:39,891 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:05:39,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:05:39,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:05:39,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:05:39,894 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:05:39,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:05:39,894 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:05:39,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:05:39,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:05:39,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:05:39,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:05:39,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:05:39,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:05:39,896 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:05:39,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:05:39,896 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:05:39,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:05:39,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:05:39,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:05:39,897 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:05:39,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:05:39,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:05:39,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:05:39,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:05:39,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:05:39,898 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:05:39,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:05:39,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:05:39,899 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:05:39,899 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 -> false [2020-09-21 10:05:40,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:05:40,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:05:40,432 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:05:40,434 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:05:40,435 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:05:40,436 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c [2020-09-21 10:05:40,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd3156477/93b99576394744efa37bd51bb0f4b03c/FLAGcda441103 [2020-09-21 10:05:41,201 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:05:41,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c [2020-09-21 10:05:41,230 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd3156477/93b99576394744efa37bd51bb0f4b03c/FLAGcda441103 [2020-09-21 10:05:41,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd3156477/93b99576394744efa37bd51bb0f4b03c [2020-09-21 10:05:41,445 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:05:41,451 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:05:41,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:05:41,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:05:41,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:05:41,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:05:41" (1/1) ... [2020-09-21 10:05:41,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@156a129e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:41, skipping insertion in model container [2020-09-21 10:05:41,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:05:41" (1/1) ... [2020-09-21 10:05:41,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:05:41,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:05:42,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:05:42,046 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:05:42,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:05:42,198 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:05:42,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:42 WrapperNode [2020-09-21 10:05:42,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:05:42,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:05:42,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:05:42,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:05:42,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:42" (1/1) ... [2020-09-21 10:05:42,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:42" (1/1) ... [2020-09-21 10:05:42,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:42" (1/1) ... [2020-09-21 10:05:42,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:42" (1/1) ... [2020-09-21 10:05:42,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:42" (1/1) ... [2020-09-21 10:05:42,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:42" (1/1) ... [2020-09-21 10:05:42,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:42" (1/1) ... [2020-09-21 10:05:42,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:05:42,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:05:42,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:05:42,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:05:42,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:42" (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 [2020-09-21 10:05:42,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:05:42,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:05:42,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 10:05:42,385 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 10:05:42,385 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 10:05:42,385 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 10:05:42,386 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 10:05:42,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 10:05:42,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 10:05:42,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 10:05:42,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 10:05:42,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 10:05:42,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 10:05:42,387 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 10:05:42,387 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 10:05:42,387 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 10:05:42,388 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 10:05:42,388 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 10:05:42,388 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 10:05:42,388 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 10:05:42,389 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 10:05:42,389 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 10:05:42,389 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 10:05:42,389 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 10:05:42,389 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:05:42,389 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 10:05:42,389 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 10:05:42,390 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-21 10:05:42,390 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 10:05:42,390 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-21 10:05:42,390 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 10:05:42,390 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 10:05:42,390 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 10:05:42,391 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 10:05:42,391 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 10:05:42,391 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 10:05:42,391 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 10:05:42,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 10:05:42,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-21 10:05:42,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-21 10:05:42,392 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 10:05:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:05:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:05:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 10:05:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 10:05:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 10:05:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 10:05:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 10:05:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 10:05:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:05:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:05:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 10:05:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:05:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:05:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:05:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:05:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 10:05:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:05:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 10:05:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 10:05:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:05:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 10:05:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 10:05:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:05:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 10:05:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 10:05:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 10:05:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 10:05:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 10:05:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 10:05:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 10:05:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 10:05:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 10:05:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 10:05:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 10:05:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 10:05:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 10:05:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-21 10:05:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 10:05:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 10:05:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:05:42,399 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 10:05:42,399 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 10:05:42,399 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 10:05:42,399 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 10:05:42,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-21 10:05:42,400 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 10:05:42,400 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 10:05:42,400 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 10:05:42,400 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-21 10:05:42,400 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 10:05:42,400 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-21 10:05:42,400 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 10:05:42,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:05:42,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:05:42,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:05:43,587 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:05:43,587 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 10:05:43,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:05:43 BoogieIcfgContainer [2020-09-21 10:05:43,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:05:43,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:05:43,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:05:43,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:05:43,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:05:41" (1/3) ... [2020-09-21 10:05:43,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b174d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:05:43, skipping insertion in model container [2020-09-21 10:05:43,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:42" (2/3) ... [2020-09-21 10:05:43,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b174d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:05:43, skipping insertion in model container [2020-09-21 10:05:43,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:05:43" (3/3) ... [2020-09-21 10:05:43,604 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product46.cil.c [2020-09-21 10:05:43,615 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:05:43,626 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:05:43,649 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:05:43,682 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:05:43,682 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:05:43,682 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:05:43,682 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:05:43,682 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:05:43,683 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:05:43,683 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:05:43,683 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:05:43,710 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-09-21 10:05:43,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-21 10:05:43,723 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:43,724 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] [2020-09-21 10:05:43,725 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:43,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:43,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1550424879, now seen corresponding path program 1 times [2020-09-21 10:05:43,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:43,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368826967] [2020-09-21 10:05:43,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:44,528 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:44,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:44,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:44,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:44,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:44,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:44,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:44,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:05:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:44,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 10:05:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:44,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:05:44,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368826967] [2020-09-21 10:05:44,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:44,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:05:44,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173670597] [2020-09-21 10:05:44,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:05:44,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:44,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:05:44,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:05:44,696 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 4 states. [2020-09-21 10:05:45,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:45,952 INFO L93 Difference]: Finished difference Result 312 states and 407 transitions. [2020-09-21 10:05:45,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:05:45,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-21 10:05:45,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:45,974 INFO L225 Difference]: With dead ends: 312 [2020-09-21 10:05:45,974 INFO L226 Difference]: Without dead ends: 174 [2020-09-21 10:05:45,980 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 [2020-09-21 10:05:46,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-21 10:05:46,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 139. [2020-09-21 10:05:46,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-09-21 10:05:46,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-09-21 10:05:46,116 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 51 [2020-09-21 10:05:46,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:46,117 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-09-21 10:05:46,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:05:46,117 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-09-21 10:05:46,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 10:05:46,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:46,128 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] [2020-09-21 10:05:46,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:05:46,129 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:46,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:46,129 INFO L82 PathProgramCache]: Analyzing trace with hash 2147140265, now seen corresponding path program 1 times [2020-09-21 10:05:46,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:46,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608632105] [2020-09-21 10:05:46,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:46,619 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:46,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:46,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:46,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:46,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:46,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:46,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:46,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:05:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:46,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:05:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:46,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:05:46,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608632105] [2020-09-21 10:05:46,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:46,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:05:46,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404713153] [2020-09-21 10:05:46,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:05:46,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:46,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:05:46,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:05:46,743 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 5 states. [2020-09-21 10:05:47,228 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:05:48,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:48,365 INFO L93 Difference]: Finished difference Result 253 states and 314 transitions. [2020-09-21 10:05:48,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 10:05:48,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-09-21 10:05:48,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:48,368 INFO L225 Difference]: With dead ends: 253 [2020-09-21 10:05:48,369 INFO L226 Difference]: Without dead ends: 164 [2020-09-21 10:05:48,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:05:48,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-21 10:05:48,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2020-09-21 10:05:48,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-09-21 10:05:48,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2020-09-21 10:05:48,414 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 52 [2020-09-21 10:05:48,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:48,414 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2020-09-21 10:05:48,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:05:48,415 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2020-09-21 10:05:48,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 10:05:48,416 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:48,417 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] [2020-09-21 10:05:48,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:05:48,417 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:48,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:48,418 INFO L82 PathProgramCache]: Analyzing trace with hash 871775649, now seen corresponding path program 1 times [2020-09-21 10:05:48,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:48,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669668903] [2020-09-21 10:05:48,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:48,854 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:48,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:48,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:48,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:48,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:49,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:49,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:49,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 10:05:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:49,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 10:05:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:49,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:05:49,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669668903] [2020-09-21 10:05:49,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:49,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:05:49,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145480647] [2020-09-21 10:05:49,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:05:49,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:49,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:05:49,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:05:49,048 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand 9 states. [2020-09-21 10:05:49,473 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:05:49,858 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:50,202 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:50,505 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:52,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:52,030 INFO L93 Difference]: Finished difference Result 266 states and 333 transitions. [2020-09-21 10:05:52,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:05:52,031 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-09-21 10:05:52,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:52,033 INFO L225 Difference]: With dead ends: 266 [2020-09-21 10:05:52,034 INFO L226 Difference]: Without dead ends: 164 [2020-09-21 10:05:52,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:05:52,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-21 10:05:52,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2020-09-21 10:05:52,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-09-21 10:05:52,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-09-21 10:05:52,085 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 57 [2020-09-21 10:05:52,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:52,086 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-09-21 10:05:52,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:05:52,088 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-09-21 10:05:52,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-21 10:05:52,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:52,089 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] [2020-09-21 10:05:52,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:05:52,089 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:52,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:52,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1442711131, now seen corresponding path program 1 times [2020-09-21 10:05:52,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:52,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246066953] [2020-09-21 10:05:52,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,504 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:52,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:05:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:05:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:05:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-21 10:05:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-21 10:05:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:52,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:05:52,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246066953] [2020-09-21 10:05:52,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:52,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 10:05:52,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066658407] [2020-09-21 10:05:52,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:05:52,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:52,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:05:52,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:05:52,641 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 7 states. [2020-09-21 10:05:52,993 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:05:54,305 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:05:55,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:55,037 INFO L93 Difference]: Finished difference Result 370 states and 466 transitions. [2020-09-21 10:05:55,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 10:05:55,038 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-09-21 10:05:55,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:55,043 INFO L225 Difference]: With dead ends: 370 [2020-09-21 10:05:55,043 INFO L226 Difference]: Without dead ends: 268 [2020-09-21 10:05:55,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-09-21 10:05:55,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-09-21 10:05:55,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 219. [2020-09-21 10:05:55,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-09-21 10:05:55,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 251 transitions. [2020-09-21 10:05:55,105 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 251 transitions. Word has length 70 [2020-09-21 10:05:55,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:55,106 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 251 transitions. [2020-09-21 10:05:55,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:05:55,106 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 251 transitions. [2020-09-21 10:05:55,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-21 10:05:55,107 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:55,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:05:55,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:05:55,108 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:55,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:55,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1583652076, now seen corresponding path program 1 times [2020-09-21 10:05:55,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:55,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857270628] [2020-09-21 10:05:55,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,497 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:55,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:05:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:05:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:05:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:05:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:05:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-21 10:05:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-21 10:05:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:05:55,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857270628] [2020-09-21 10:05:55,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:55,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:05:55,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377216090] [2020-09-21 10:05:55,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:05:55,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:55,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:05:55,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:05:55,630 INFO L87 Difference]: Start difference. First operand 219 states and 251 transitions. Second operand 9 states. [2020-09-21 10:05:56,027 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:05:57,303 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:57,724 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:05:58,431 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:58,698 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:00,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:00,023 INFO L93 Difference]: Finished difference Result 653 states and 819 transitions. [2020-09-21 10:06:00,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-21 10:06:00,024 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-09-21 10:06:00,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:00,029 INFO L225 Difference]: With dead ends: 653 [2020-09-21 10:06:00,029 INFO L226 Difference]: Without dead ends: 462 [2020-09-21 10:06:00,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-09-21 10:06:00,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-09-21 10:06:00,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 386. [2020-09-21 10:06:00,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-09-21 10:06:00,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 442 transitions. [2020-09-21 10:06:00,139 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 442 transitions. Word has length 84 [2020-09-21 10:06:00,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:00,140 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 442 transitions. [2020-09-21 10:06:00,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:06:00,140 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 442 transitions. [2020-09-21 10:06:00,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-21 10:06:00,142 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:00,142 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] [2020-09-21 10:06:00,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:06:00,143 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:00,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:00,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1422526648, now seen corresponding path program 1 times [2020-09-21 10:06:00,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:00,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309958121] [2020-09-21 10:06:00,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,514 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:00,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:06:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:06:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-21 10:06:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-21 10:06:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:00,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:06:00,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309958121] [2020-09-21 10:06:00,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:06:00,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 10:06:00,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009798930] [2020-09-21 10:06:00,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:06:00,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:00,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:06:00,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:06:00,683 INFO L87 Difference]: Start difference. First operand 386 states and 442 transitions. Second operand 10 states. [2020-09-21 10:06:01,097 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:02,523 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:03,816 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:04,121 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:04,445 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:05,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:05,048 INFO L93 Difference]: Finished difference Result 858 states and 1059 transitions. [2020-09-21 10:06:05,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-21 10:06:05,049 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-09-21 10:06:05,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:05,054 INFO L225 Difference]: With dead ends: 858 [2020-09-21 10:06:05,054 INFO L226 Difference]: Without dead ends: 500 [2020-09-21 10:06:05,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-09-21 10:06:05,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-09-21 10:06:05,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 385. [2020-09-21 10:06:05,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-09-21 10:06:05,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 439 transitions. [2020-09-21 10:06:05,144 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 439 transitions. Word has length 88 [2020-09-21 10:06:05,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:05,144 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 439 transitions. [2020-09-21 10:06:05,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:06:05,145 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 439 transitions. [2020-09-21 10:06:05,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-21 10:06:05,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:05,147 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:06:05,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:06:05,147 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:05,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:05,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1956386739, now seen corresponding path program 1 times [2020-09-21 10:06:05,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:05,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907406487] [2020-09-21 10:06:05,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:05,423 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:05,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:05,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:05,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:05,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:05,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:05,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:05,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:06:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:05,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:06:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:05,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:05,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:05,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:05,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:05,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:05,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:05,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:05,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-21 10:06:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:05,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-21 10:06:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:06:05,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907406487] [2020-09-21 10:06:05,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:06:05,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 10:06:05,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660201357] [2020-09-21 10:06:05,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:06:05,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:05,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:06:05,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:06:05,615 INFO L87 Difference]: Start difference. First operand 385 states and 439 transitions. Second operand 10 states. [2020-09-21 10:06:06,635 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:06,898 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:06:07,229 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:07,535 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:08,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:08,983 INFO L93 Difference]: Finished difference Result 865 states and 1088 transitions. [2020-09-21 10:06:08,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 10:06:08,984 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-09-21 10:06:08,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:08,989 INFO L225 Difference]: With dead ends: 865 [2020-09-21 10:06:08,989 INFO L226 Difference]: Without dead ends: 508 [2020-09-21 10:06:08,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:06:08,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-09-21 10:06:09,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 395. [2020-09-21 10:06:09,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-09-21 10:06:09,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 449 transitions. [2020-09-21 10:06:09,071 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 449 transitions. Word has length 104 [2020-09-21 10:06:09,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:09,071 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 449 transitions. [2020-09-21 10:06:09,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:06:09,072 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 449 transitions. [2020-09-21 10:06:09,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-21 10:06:09,073 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:09,074 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:06:09,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:06:09,074 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:09,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:09,075 INFO L82 PathProgramCache]: Analyzing trace with hash -28114037, now seen corresponding path program 1 times [2020-09-21 10:06:09,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:09,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852094498] [2020-09-21 10:06:09,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:09,470 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:09,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:09,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:09,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:09,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:09,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:09,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:09,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:06:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:09,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:06:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:09,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:09,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:09,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:09,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:09,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:09,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:09,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:09,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-21 10:06:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:09,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-21 10:06:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:09,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:06:09,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852094498] [2020-09-21 10:06:09,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:06:09,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-21 10:06:09,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347928780] [2020-09-21 10:06:09,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 10:06:09,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:09,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 10:06:09,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:06:09,793 INFO L87 Difference]: Start difference. First operand 395 states and 449 transitions. Second operand 12 states. [2020-09-21 10:06:10,517 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:10,823 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:11,123 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:11,930 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:12,266 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:12,605 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:14,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:14,253 INFO L93 Difference]: Finished difference Result 885 states and 1110 transitions. [2020-09-21 10:06:14,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 10:06:14,254 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2020-09-21 10:06:14,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:14,259 INFO L225 Difference]: With dead ends: 885 [2020-09-21 10:06:14,259 INFO L226 Difference]: Without dead ends: 518 [2020-09-21 10:06:14,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-09-21 10:06:14,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-09-21 10:06:14,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 403. [2020-09-21 10:06:14,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-09-21 10:06:14,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 457 transitions. [2020-09-21 10:06:14,331 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 457 transitions. Word has length 104 [2020-09-21 10:06:14,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:14,331 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 457 transitions. [2020-09-21 10:06:14,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 10:06:14,331 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 457 transitions. [2020-09-21 10:06:14,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-21 10:06:14,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:14,333 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:06:14,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:06:14,334 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:14,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:14,334 INFO L82 PathProgramCache]: Analyzing trace with hash -268654166, now seen corresponding path program 1 times [2020-09-21 10:06:14,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:14,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927437542] [2020-09-21 10:06:14,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,677 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:14,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:06:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:06:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:14,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-21 10:06:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-21 10:06:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:06:14,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927437542] [2020-09-21 10:06:14,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:06:14,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:06:14,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639842411] [2020-09-21 10:06:14,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:06:14,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:14,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:06:14,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:06:14,891 INFO L87 Difference]: Start difference. First operand 403 states and 457 transitions. Second operand 8 states. [2020-09-21 10:06:15,288 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:15,952 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:18,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:18,881 INFO L93 Difference]: Finished difference Result 1233 states and 1597 transitions. [2020-09-21 10:06:18,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-21 10:06:18,882 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2020-09-21 10:06:18,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:18,889 INFO L225 Difference]: With dead ends: 1233 [2020-09-21 10:06:18,889 INFO L226 Difference]: Without dead ends: 858 [2020-09-21 10:06:18,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-09-21 10:06:18,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2020-09-21 10:06:19,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 713. [2020-09-21 10:06:19,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-09-21 10:06:19,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 835 transitions. [2020-09-21 10:06:19,060 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 835 transitions. Word has length 104 [2020-09-21 10:06:19,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:19,062 INFO L479 AbstractCegarLoop]: Abstraction has 713 states and 835 transitions. [2020-09-21 10:06:19,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:06:19,062 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 835 transitions. [2020-09-21 10:06:19,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-21 10:06:19,066 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:19,067 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:06:19,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:06:19,067 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:19,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:19,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1852641244, now seen corresponding path program 1 times [2020-09-21 10:06:19,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:19,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573554111] [2020-09-21 10:06:19,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,437 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:19,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:06:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:06:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 10:06:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-21 10:06:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-21 10:06:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 10:06:19,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573554111] [2020-09-21 10:06:19,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:06:19,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-21 10:06:19,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020134625] [2020-09-21 10:06:19,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-21 10:06:19,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:19,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-21 10:06:19,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:06:19,902 INFO L87 Difference]: Start difference. First operand 713 states and 835 transitions. Second operand 18 states. [2020-09-21 10:06:20,782 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:21,201 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:06:21,539 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:21,910 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:22,763 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:24,038 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:24,435 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:24,784 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:25,144 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:25,565 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:25,918 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:26,640 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-09-21 10:06:27,352 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-09-21 10:06:30,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:30,016 INFO L93 Difference]: Finished difference Result 1515 states and 1873 transitions. [2020-09-21 10:06:30,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-09-21 10:06:30,017 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 108 [2020-09-21 10:06:30,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:30,023 INFO L225 Difference]: With dead ends: 1515 [2020-09-21 10:06:30,023 INFO L226 Difference]: Without dead ends: 830 [2020-09-21 10:06:30,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=554, Invalid=2308, Unknown=0, NotChecked=0, Total=2862 [2020-09-21 10:06:30,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-09-21 10:06:30,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 694. [2020-09-21 10:06:30,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-09-21 10:06:30,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 803 transitions. [2020-09-21 10:06:30,188 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 803 transitions. Word has length 108 [2020-09-21 10:06:30,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:30,188 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 803 transitions. [2020-09-21 10:06:30,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-21 10:06:30,189 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 803 transitions. [2020-09-21 10:06:30,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-21 10:06:30,192 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:30,193 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:06:30,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 10:06:30,193 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:30,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:30,194 INFO L82 PathProgramCache]: Analyzing trace with hash 760447467, now seen corresponding path program 1 times [2020-09-21 10:06:30,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:30,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072153456] [2020-09-21 10:06:30,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,540 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:30,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:06:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 10:06:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:30,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 10:06:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-21 10:06:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-21 10:06:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-09-21 10:06:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-21 10:06:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-21 10:06:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:30,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-21 10:06:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:31,010 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-21 10:06:31,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072153456] [2020-09-21 10:06:31,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:06:31,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-21 10:06:31,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733410808] [2020-09-21 10:06:31,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-21 10:06:31,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:31,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-21 10:06:31,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-09-21 10:06:31,017 INFO L87 Difference]: Start difference. First operand 694 states and 803 transitions. Second operand 19 states. [2020-09-21 10:06:32,095 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:32,480 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:06:32,825 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:33,143 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:34,053 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:35,371 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:35,790 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:36,128 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:36,485 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:36,885 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:37,224 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:38,784 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 191