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 -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 02:50:55,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 02:50:55,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 02:50:55,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 02:50:55,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 02:50:55,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 02:50:55,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 02:50:55,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 02:50:55,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 02:50:55,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 02:50:55,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 02:50:55,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 02:50:55,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 02:50:55,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 02:50:55,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 02:50:55,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 02:50:55,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 02:50:55,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 02:50:55,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 02:50:55,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 02:50:55,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 02:50:55,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 02:50:55,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 02:50:55,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 02:50:55,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 02:50:55,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 02:50:55,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 02:50:55,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 02:50:55,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 02:50:55,771 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 02:50:55,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 02:50:55,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 02:50:55,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 02:50:55,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 02:50:55,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 02:50:55,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 02:50:55,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 02:50:55,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 02:50:55,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 02:50:55,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 02:50:55,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 02:50:55,779 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 02:50:55,800 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 02:50:55,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 02:50:55,801 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 02:50:55,801 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 02:50:55,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 02:50:55,802 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 02:50:55,802 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 02:50:55,802 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 02:50:55,802 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 02:50:55,803 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 02:50:55,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 02:50:55,804 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 02:50:55,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 02:50:55,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 02:50:55,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 02:50:55,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 02:50:55,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 02:50:55,805 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 02:50:55,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 02:50:55,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 02:50:55,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 02:50:55,806 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 02:50:55,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 02:50:55,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 02:50:55,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 02:50:55,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 02:50:55,807 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 02:50:55,807 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 02:50:55,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 02:50:55,807 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 02:50:55,840 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 02:50:55,851 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 02:50:55,855 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 02:50:55,856 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 02:50:55,857 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 02:50:55,857 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c [2019-09-10 02:50:55,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdb005915/8a26eac006ac4047bb3f4ef78e925025/FLAG9d3bf8c5c [2019-09-10 02:50:56,487 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 02:50:56,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c [2019-09-10 02:50:56,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdb005915/8a26eac006ac4047bb3f4ef78e925025/FLAG9d3bf8c5c [2019-09-10 02:50:56,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdb005915/8a26eac006ac4047bb3f4ef78e925025 [2019-09-10 02:50:56,761 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 02:50:56,763 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 02:50:56,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 02:50:56,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 02:50:56,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 02:50:56,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:50:56" (1/1) ... [2019-09-10 02:50:56,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47495e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:50:56, skipping insertion in model container [2019-09-10 02:50:56,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:50:56" (1/1) ... [2019-09-10 02:50:56,780 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 02:50:56,827 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 02:50:57,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:50:57,284 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 02:50:57,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:50:57,408 INFO L192 MainTranslator]: Completed translation [2019-09-10 02:50:57,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:50:57 WrapperNode [2019-09-10 02:50:57,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 02:50:57,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 02:50:57,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 02:50:57,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 02:50:57,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:50:57" (1/1) ... [2019-09-10 02:50:57,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:50:57" (1/1) ... [2019-09-10 02:50:57,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:50:57" (1/1) ... [2019-09-10 02:50:57,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:50:57" (1/1) ... [2019-09-10 02:50:57,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:50:57" (1/1) ... [2019-09-10 02:50:57,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:50:57" (1/1) ... [2019-09-10 02:50:57,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:50:57" (1/1) ... [2019-09-10 02:50:57,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 02:50:57,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 02:50:57,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 02:50:57,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 02:50:57,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:50:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-09-10 02:50:57,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 02:50:57,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 02:50:57,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-10 02:50:57,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-10 02:50:57,585 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-10 02:50:57,586 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-10 02:50:57,586 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-10 02:50:57,586 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-10 02:50:57,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 02:50:57,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-10 02:50:57,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-10 02:50:57,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-10 02:50:57,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-10 02:50:57,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-10 02:50:57,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-10 02:50:57,589 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-10 02:50:57,589 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-10 02:50:57,590 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-10 02:50:57,590 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-10 02:50:57,590 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-10 02:50:57,591 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-10 02:50:57,591 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-10 02:50:57,591 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-10 02:50:57,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-10 02:50:57,591 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-10 02:50:57,592 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-10 02:50:57,592 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-10 02:50:57,592 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-10 02:50:57,593 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-10 02:50:57,593 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-10 02:50:57,593 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-10 02:50:57,593 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-10 02:50:57,593 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-10 02:50:57,593 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-10 02:50:57,593 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-10 02:50:57,594 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-10 02:50:57,594 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-10 02:50:57,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-10 02:50:57,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-10 02:50:57,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-10 02:50:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 02:50:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 02:50:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-10 02:50:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-10 02:50:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-10 02:50:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-10 02:50:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-10 02:50:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-10 02:50:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-10 02:50:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-10 02:50:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-10 02:50:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-10 02:50:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-10 02:50:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-10 02:50:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-10 02:50:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-10 02:50:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-10 02:50:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 02:50:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-10 02:50:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 02:50:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 02:50:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-10 02:50:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 02:50:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 02:50:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 02:50:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 02:50:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-10 02:50:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 02:50:57,600 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-10 02:50:57,600 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-10 02:50:57,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 02:50:57,600 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-10 02:50:57,600 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-10 02:50:57,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 02:50:57,601 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-10 02:50:57,601 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-10 02:50:57,602 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-10 02:50:57,602 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-10 02:50:57,602 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-10 02:50:57,603 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-10 02:50:57,603 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-10 02:50:57,603 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-10 02:50:57,603 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-10 02:50:57,603 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-10 02:50:57,603 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-10 02:50:57,604 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-10 02:50:57,604 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-10 02:50:57,605 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-10 02:50:57,605 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-10 02:50:57,606 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-10 02:50:57,606 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-10 02:50:57,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 02:50:57,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-10 02:50:57,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 02:50:58,709 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 02:50:58,710 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-10 02:50:58,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:50:58 BoogieIcfgContainer [2019-09-10 02:50:58,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 02:50:58,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 02:50:58,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 02:50:58,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 02:50:58,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 02:50:56" (1/3) ... [2019-09-10 02:50:58,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca54e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:50:58, skipping insertion in model container [2019-09-10 02:50:58,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:50:57" (2/3) ... [2019-09-10 02:50:58,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca54e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:50:58, skipping insertion in model container [2019-09-10 02:50:58,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:50:58" (3/3) ... [2019-09-10 02:50:58,722 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product35.cil.c [2019-09-10 02:50:58,732 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 02:50:58,742 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 02:50:58,759 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 02:50:58,787 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 02:50:58,788 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 02:50:58,788 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 02:50:58,788 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 02:50:58,788 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 02:50:58,788 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 02:50:58,788 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 02:50:58,789 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 02:50:58,808 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states. [2019-09-10 02:50:58,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-10 02:50:58,821 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:50:58,822 INFO L399 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] [2019-09-10 02:50:58,825 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:50:58,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:50:58,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1963515353, now seen corresponding path program 1 times [2019-09-10 02:50:58,833 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:50:58,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:50:58,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:50:58,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:50:58,887 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:50:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:50:59,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:50:59,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:50:59,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 02:50:59,193 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:50:59,200 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:50:59,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:50:59,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:50:59,220 INFO L87 Difference]: Start difference. First operand 167 states. Second operand 2 states. [2019-09-10 02:50:59,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:50:59,251 INFO L93 Difference]: Finished difference Result 135 states and 157 transitions. [2019-09-10 02:50:59,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:50:59,253 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-10 02:50:59,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:50:59,266 INFO L225 Difference]: With dead ends: 135 [2019-09-10 02:50:59,267 INFO L226 Difference]: Without dead ends: 124 [2019-09-10 02:50:59,268 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:50:59,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2019-09-10 02:50:59,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2019-09-10 02:50:59,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-09-10 02:50:59,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 145 transitions. [2019-09-10 02:50:59,325 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 145 transitions. Word has length 59 [2019-09-10 02:50:59,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:50:59,325 INFO L475 AbstractCegarLoop]: Abstraction has 124 states and 145 transitions. [2019-09-10 02:50:59,325 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:50:59,326 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 145 transitions. [2019-09-10 02:50:59,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-10 02:50:59,329 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:50:59,330 INFO L399 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] [2019-09-10 02:50:59,330 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:50:59,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:50:59,331 INFO L82 PathProgramCache]: Analyzing trace with hash -653096167, now seen corresponding path program 1 times [2019-09-10 02:50:59,331 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:50:59,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:50:59,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:50:59,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:50:59,332 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:50:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:50:59,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:50:59,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:50:59,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 02:50:59,465 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:50:59,468 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 02:50:59,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 02:50:59,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 02:50:59,469 INFO L87 Difference]: Start difference. First operand 124 states and 145 transitions. Second operand 3 states. [2019-09-10 02:50:59,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:50:59,494 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2019-09-10 02:50:59,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 02:50:59,496 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-10 02:50:59,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:50:59,499 INFO L225 Difference]: With dead ends: 115 [2019-09-10 02:50:59,500 INFO L226 Difference]: Without dead ends: 115 [2019-09-10 02:50:59,503 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 02:50:59,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2019-09-10 02:50:59,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2019-09-10 02:50:59,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-09-10 02:50:59,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 133 transitions. [2019-09-10 02:50:59,532 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 133 transitions. Word has length 60 [2019-09-10 02:50:59,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:50:59,532 INFO L475 AbstractCegarLoop]: Abstraction has 115 states and 133 transitions. [2019-09-10 02:50:59,532 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 02:50:59,533 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 133 transitions. [2019-09-10 02:50:59,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-10 02:50:59,536 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:50:59,537 INFO L399 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] [2019-09-10 02:50:59,537 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:50:59,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:50:59,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1851002156, now seen corresponding path program 1 times [2019-09-10 02:50:59,540 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:50:59,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:50:59,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:50:59,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:50:59,542 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:50:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:50:59,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:50:59,743 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:50:59,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:50:59,743 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:50:59,744 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:50:59,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:50:59,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:50:59,745 INFO L87 Difference]: Start difference. First operand 115 states and 133 transitions. Second operand 7 states. [2019-09-10 02:51:00,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:00,219 INFO L93 Difference]: Finished difference Result 258 states and 308 transitions. [2019-09-10 02:51:00,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 02:51:00,219 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-09-10 02:51:00,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:00,224 INFO L225 Difference]: With dead ends: 258 [2019-09-10 02:51:00,225 INFO L226 Difference]: Without dead ends: 258 [2019-09-10 02:51:00,225 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-10 02:51:00,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2019-09-10 02:51:00,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 238. [2019-09-10 02:51:00,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-09-10 02:51:00,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 286 transitions. [2019-09-10 02:51:00,269 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 286 transitions. Word has length 64 [2019-09-10 02:51:00,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:00,269 INFO L475 AbstractCegarLoop]: Abstraction has 238 states and 286 transitions. [2019-09-10 02:51:00,270 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:51:00,270 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 286 transitions. [2019-09-10 02:51:00,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-10 02:51:00,273 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:00,274 INFO L399 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] [2019-09-10 02:51:00,274 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:00,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:00,274 INFO L82 PathProgramCache]: Analyzing trace with hash -601082987, now seen corresponding path program 1 times [2019-09-10 02:51:00,275 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:00,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:00,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:00,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:00,276 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:00,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-10 02:51:00,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:00,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 02:51:00,468 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:00,468 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 02:51:00,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 02:51:00,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 02:51:00,469 INFO L87 Difference]: Start difference. First operand 238 states and 286 transitions. Second operand 6 states. [2019-09-10 02:51:00,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:00,668 INFO L93 Difference]: Finished difference Result 345 states and 413 transitions. [2019-09-10 02:51:00,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 02:51:00,669 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2019-09-10 02:51:00,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:00,673 INFO L225 Difference]: With dead ends: 345 [2019-09-10 02:51:00,673 INFO L226 Difference]: Without dead ends: 345 [2019-09-10 02:51:00,674 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-10 02:51:00,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2019-09-10 02:51:00,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 335. [2019-09-10 02:51:00,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2019-09-10 02:51:00,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 403 transitions. [2019-09-10 02:51:00,717 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 403 transitions. Word has length 70 [2019-09-10 02:51:00,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:00,721 INFO L475 AbstractCegarLoop]: Abstraction has 335 states and 403 transitions. [2019-09-10 02:51:00,722 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 02:51:00,722 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 403 transitions. [2019-09-10 02:51:00,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-09-10 02:51:00,729 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:00,729 INFO L399 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] [2019-09-10 02:51:00,729 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:00,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:00,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1418290782, now seen corresponding path program 1 times [2019-09-10 02:51:00,730 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:00,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:00,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:00,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:00,735 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:00,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:00,840 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:00,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 02:51:00,840 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:00,842 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 02:51:00,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 02:51:00,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 02:51:00,844 INFO L87 Difference]: Start difference. First operand 335 states and 403 transitions. Second operand 4 states. [2019-09-10 02:51:01,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:01,117 INFO L93 Difference]: Finished difference Result 921 states and 1161 transitions. [2019-09-10 02:51:01,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 02:51:01,118 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2019-09-10 02:51:01,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:01,125 INFO L225 Difference]: With dead ends: 921 [2019-09-10 02:51:01,125 INFO L226 Difference]: Without dead ends: 921 [2019-09-10 02:51:01,126 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 02:51:01,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2019-09-10 02:51:01,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 901. [2019-09-10 02:51:01,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2019-09-10 02:51:01,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1122 transitions. [2019-09-10 02:51:01,178 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1122 transitions. Word has length 87 [2019-09-10 02:51:01,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:01,179 INFO L475 AbstractCegarLoop]: Abstraction has 901 states and 1122 transitions. [2019-09-10 02:51:01,179 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 02:51:01,179 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1122 transitions. [2019-09-10 02:51:01,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-09-10 02:51:01,184 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:01,184 INFO L399 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] [2019-09-10 02:51:01,184 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:01,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:01,185 INFO L82 PathProgramCache]: Analyzing trace with hash 765386145, now seen corresponding path program 1 times [2019-09-10 02:51:01,185 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:01,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:01,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:01,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:01,186 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:01,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:01,309 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:01,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 02:51:01,310 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:01,310 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 02:51:01,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 02:51:01,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 02:51:01,311 INFO L87 Difference]: Start difference. First operand 901 states and 1122 transitions. Second operand 6 states. [2019-09-10 02:51:01,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:01,350 INFO L93 Difference]: Finished difference Result 931 states and 1154 transitions. [2019-09-10 02:51:01,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 02:51:01,350 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2019-09-10 02:51:01,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:01,357 INFO L225 Difference]: With dead ends: 931 [2019-09-10 02:51:01,357 INFO L226 Difference]: Without dead ends: 931 [2019-09-10 02:51:01,358 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:51:01,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2019-09-10 02:51:01,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 931. [2019-09-10 02:51:01,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 931 states. [2019-09-10 02:51:01,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1154 transitions. [2019-09-10 02:51:01,406 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1154 transitions. Word has length 87 [2019-09-10 02:51:01,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:01,406 INFO L475 AbstractCegarLoop]: Abstraction has 931 states and 1154 transitions. [2019-09-10 02:51:01,406 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 02:51:01,407 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1154 transitions. [2019-09-10 02:51:01,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-09-10 02:51:01,410 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:01,410 INFO L399 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] [2019-09-10 02:51:01,410 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:01,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:01,411 INFO L82 PathProgramCache]: Analyzing trace with hash -2143377757, now seen corresponding path program 1 times [2019-09-10 02:51:01,411 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:01,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:01,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:01,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:01,412 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:01,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:01,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:01,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-10 02:51:01,516 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:01,517 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-10 02:51:01,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-10 02:51:01,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-10 02:51:01,518 INFO L87 Difference]: Start difference. First operand 931 states and 1154 transitions. Second operand 8 states. [2019-09-10 02:51:01,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:01,561 INFO L93 Difference]: Finished difference Result 813 states and 988 transitions. [2019-09-10 02:51:01,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 02:51:01,562 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2019-09-10 02:51:01,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:01,568 INFO L225 Difference]: With dead ends: 813 [2019-09-10 02:51:01,568 INFO L226 Difference]: Without dead ends: 813 [2019-09-10 02:51:01,569 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-10 02:51:01,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2019-09-10 02:51:01,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 813. [2019-09-10 02:51:01,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 813 states. [2019-09-10 02:51:01,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 988 transitions. [2019-09-10 02:51:01,607 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 988 transitions. Word has length 87 [2019-09-10 02:51:01,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:01,608 INFO L475 AbstractCegarLoop]: Abstraction has 813 states and 988 transitions. [2019-09-10 02:51:01,608 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-10 02:51:01,608 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 988 transitions. [2019-09-10 02:51:01,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-09-10 02:51:01,612 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:01,613 INFO L399 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] [2019-09-10 02:51:01,613 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:01,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:01,614 INFO L82 PathProgramCache]: Analyzing trace with hash 858193610, now seen corresponding path program 1 times [2019-09-10 02:51:01,614 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:01,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:01,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:01,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:01,615 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:01,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:01,831 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:01,831 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-09-10 02:51:01,832 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:01,835 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-10 02:51:01,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-10 02:51:01,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-09-10 02:51:01,838 INFO L87 Difference]: Start difference. First operand 813 states and 988 transitions. Second operand 11 states. [2019-09-10 02:51:02,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:02,795 INFO L93 Difference]: Finished difference Result 1550 states and 1910 transitions. [2019-09-10 02:51:02,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-10 02:51:02,800 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 91 [2019-09-10 02:51:02,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:02,810 INFO L225 Difference]: With dead ends: 1550 [2019-09-10 02:51:02,811 INFO L226 Difference]: Without dead ends: 1550 [2019-09-10 02:51:02,812 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-09-10 02:51:02,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2019-09-10 02:51:02,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1358. [2019-09-10 02:51:02,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1358 states. [2019-09-10 02:51:02,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1667 transitions. [2019-09-10 02:51:02,894 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1667 transitions. Word has length 91 [2019-09-10 02:51:02,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:02,894 INFO L475 AbstractCegarLoop]: Abstraction has 1358 states and 1667 transitions. [2019-09-10 02:51:02,894 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-10 02:51:02,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1667 transitions. [2019-09-10 02:51:02,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-09-10 02:51:02,898 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:02,899 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:51:02,899 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:02,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:02,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1244109311, now seen corresponding path program 1 times [2019-09-10 02:51:02,900 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:02,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:02,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:02,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:02,901 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:03,047 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-10 02:51:03,048 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:51:03,048 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 02:51:03,049 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 135 with the following transitions: [2019-09-10 02:51:03,051 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [92], [108], [112], [113], [114], [117], [119], [122], [129], [132], [133], [134], [143], [147], [151], [154], [157], [159], [165], [167], [170], [195], [196], [197], [198], [199], [201], [206], [208], [209], [213], [216], [220], [226], [257], [261], [264], [268], [269], [272], [273], [274], [276], [277], [278], [280], [283], [285], [288], [291], [300], [302], [303], [304], [398], [399], [409], [417], [418], [419], [420], [421], [422], [423], [424], [425], [459], [460], [461], [462], [465], [466], [467], [468], [473], [474], [477], [478], [479], [480], [481], [482], [483], [484], [485], [486], [491], [492], [493], [494], [495], [496], [497], [501], [502], [503], [511], [512], [513] [2019-09-10 02:51:03,111 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:51:03,111 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:51:03,209 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 02:51:03,211 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 70 root evaluator evaluations with a maximum evaluation depth of 0. Performed 70 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-09-10 02:51:03,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:03,217 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 02:51:03,302 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-10 02:51:03,303 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 02:51:03,306 INFO L420 sIntCurrentIteration]: We unified 133 AI predicates to 133 [2019-09-10 02:51:03,307 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 02:51:03,307 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 02:51:03,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-10 02:51:03,308 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:03,308 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:51:03,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:51:03,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:51:03,309 INFO L87 Difference]: Start difference. First operand 1358 states and 1667 transitions. Second operand 2 states. [2019-09-10 02:51:03,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:03,310 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-10 02:51:03,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:51:03,310 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 134 [2019-09-10 02:51:03,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:03,310 INFO L225 Difference]: With dead ends: 2 [2019-09-10 02:51:03,310 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 02:51:03,311 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:51:03,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 02:51:03,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 02:51:03,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 02:51:03,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 02:51:03,312 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 134 [2019-09-10 02:51:03,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:03,312 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 02:51:03,312 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:51:03,312 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 02:51:03,312 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 02:51:03,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 02:51:03 BoogieIcfgContainer [2019-09-10 02:51:03,318 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 02:51:03,320 INFO L168 Benchmark]: Toolchain (without parser) took 6557.20 ms. Allocated memory was 135.3 MB in the beginning and 302.5 MB in the end (delta: 167.2 MB). Free memory was 90.2 MB in the beginning and 106.1 MB in the end (delta: -15.8 MB). Peak memory consumption was 151.4 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:03,321 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 135.3 MB. Free memory was 109.9 MB in the beginning and 109.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 02:51:03,322 INFO L168 Benchmark]: CACSL2BoogieTranslator took 646.20 ms. Allocated memory was 135.3 MB in the beginning and 201.9 MB in the end (delta: 66.6 MB). Free memory was 90.0 MB in the beginning and 166.8 MB in the end (delta: -76.8 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:03,323 INFO L168 Benchmark]: Boogie Preprocessor took 109.98 ms. Allocated memory is still 201.9 MB. Free memory was 166.8 MB in the beginning and 162.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:03,324 INFO L168 Benchmark]: RCFGBuilder took 1191.43 ms. Allocated memory was 201.9 MB in the beginning and 231.2 MB in the end (delta: 29.4 MB). Free memory was 162.3 MB in the beginning and 195.1 MB in the end (delta: -32.8 MB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:03,325 INFO L168 Benchmark]: TraceAbstraction took 4604.83 ms. Allocated memory was 231.2 MB in the beginning and 302.5 MB in the end (delta: 71.3 MB). Free memory was 193.8 MB in the beginning and 106.1 MB in the end (delta: 87.7 MB). Peak memory consumption was 159.0 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:03,330 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 135.3 MB. Free memory was 109.9 MB in the beginning and 109.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 646.20 ms. Allocated memory was 135.3 MB in the beginning and 201.9 MB in the end (delta: 66.6 MB). Free memory was 90.0 MB in the beginning and 166.8 MB in the end (delta: -76.8 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.98 ms. Allocated memory is still 201.9 MB. Free memory was 166.8 MB in the beginning and 162.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1191.43 ms. Allocated memory was 201.9 MB in the beginning and 231.2 MB in the end (delta: 29.4 MB). Free memory was 162.3 MB in the beginning and 195.1 MB in the end (delta: -32.8 MB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4604.83 ms. Allocated memory was 231.2 MB in the beginning and 302.5 MB in the end (delta: 71.3 MB). Free memory was 193.8 MB in the beginning and 106.1 MB in the end (delta: 87.7 MB). Peak memory consumption was 159.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 231 locations, 1 error locations. SAFE Result, 4.5s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1311 SDtfs, 1028 SDslu, 3130 SDs, 0 SdLazy, 1008 SolverSat, 275 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 214 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1358occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.8872180451127819 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 242 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 739 NumberOfCodeBlocks, 739 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 730 ConstructedInterpolants, 0 QuantifiedInterpolants, 107642 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 57/62 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...