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-efa34d5 [2019-09-16 17:09:38,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:09:38,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:09:38,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:09:38,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:09:38,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:09:38,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:09:38,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:09:38,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:09:38,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:09:38,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:09:38,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:09:38,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:09:38,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:09:38,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:09:38,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:09:38,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:09:38,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:09:38,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:09:38,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:09:38,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:09:38,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:09:38,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:09:38,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:09:38,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:09:38,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:09:38,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:09:38,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:09:38,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:09:38,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:09:38,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:09:38,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:09:38,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:09:38,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:09:38,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:09:38,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:09:38,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:09:38,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:09:38,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:09:38,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:09:38,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:09:38,813 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 [2019-09-16 17:09:38,838 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:09:38,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:09:38,840 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:09:38,840 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:09:38,841 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:09:38,841 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:09:38,841 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:09:38,841 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:09:38,842 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:09:38,842 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:09:38,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:09:38,844 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:09:38,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:09:38,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:09:38,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:09:38,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:09:38,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:09:38,846 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:09:38,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:09:38,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:09:38,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:09:38,847 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:09:38,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:09:38,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:09:38,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:09:38,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:09:38,848 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:09:38,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:09:38,848 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:09:38,848 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:09:38,896 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:09:38,910 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:09:38,913 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:09:38,915 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:09:38,915 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:09:38,916 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c [2019-09-16 17:09:38,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/531c855b2/fa7e58493db04d929ee8fb88b69572dc/FLAGa8cc409e7 [2019-09-16 17:09:39,512 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:09:39,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c [2019-09-16 17:09:39,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/531c855b2/fa7e58493db04d929ee8fb88b69572dc/FLAGa8cc409e7 [2019-09-16 17:09:39,815 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/531c855b2/fa7e58493db04d929ee8fb88b69572dc [2019-09-16 17:09:39,824 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:09:39,826 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:09:39,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:09:39,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:09:39,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:09:39,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:09:39" (1/1) ... [2019-09-16 17:09:39,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24847820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:39, skipping insertion in model container [2019-09-16 17:09:39,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:09:39" (1/1) ... [2019-09-16 17:09:39,844 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:09:39,905 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:09:40,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:09:40,425 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:09:40,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:09:40,557 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:09:40,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:40 WrapperNode [2019-09-16 17:09:40,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:09:40,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:09:40,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:09:40,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:09:40,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:40" (1/1) ... [2019-09-16 17:09:40,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:40" (1/1) ... [2019-09-16 17:09:40,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:40" (1/1) ... [2019-09-16 17:09:40,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:40" (1/1) ... [2019-09-16 17:09:40,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:40" (1/1) ... [2019-09-16 17:09:40,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:40" (1/1) ... [2019-09-16 17:09:40,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:40" (1/1) ... [2019-09-16 17:09:40,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:09:40,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:09:40,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:09:40,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:09:40,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:40" (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 [2019-09-16 17:09:40,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:09:40,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:09:40,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-16 17:09:40,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-16 17:09:40,778 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-16 17:09:40,778 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-16 17:09:40,779 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-16 17:09:40,779 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-16 17:09:40,779 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:09:40,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-16 17:09:40,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-16 17:09:40,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-16 17:09:40,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-16 17:09:40,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-16 17:09:40,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-16 17:09:40,783 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-16 17:09:40,783 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-16 17:09:40,784 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-16 17:09:40,784 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-16 17:09:40,784 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-16 17:09:40,784 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-16 17:09:40,785 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-16 17:09:40,785 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-16 17:09:40,785 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-16 17:09:40,785 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-16 17:09:40,786 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-16 17:09:40,787 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-16 17:09:40,787 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-16 17:09:40,787 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-16 17:09:40,787 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-16 17:09:40,788 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-16 17:09:40,788 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-16 17:09:40,788 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-16 17:09:40,788 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-16 17:09:40,788 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-16 17:09:40,789 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-16 17:09:40,789 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-16 17:09:40,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-16 17:09:40,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-16 17:09:40,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-16 17:09:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:09:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:09:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-16 17:09:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-16 17:09:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-16 17:09:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-16 17:09:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-16 17:09:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-16 17:09:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-16 17:09:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-16 17:09:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-16 17:09:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-16 17:09:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-16 17:09:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-16 17:09:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-16 17:09:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-16 17:09:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-16 17:09:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:09:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-16 17:09:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:09:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:09:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-16 17:09:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:09:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:09:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:09:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:09:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-16 17:09:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:09:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-16 17:09:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-16 17:09:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:09:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-16 17:09:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-16 17:09:40,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:09:40,797 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-16 17:09:40,797 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-16 17:09:40,797 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-16 17:09:40,797 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-16 17:09:40,798 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-16 17:09:40,798 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-16 17:09:40,798 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-16 17:09:40,799 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-16 17:09:40,799 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-16 17:09:40,799 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-16 17:09:40,799 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-16 17:09:40,800 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-16 17:09:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-16 17:09:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-16 17:09:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-16 17:09:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-16 17:09:40,802 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-16 17:09:40,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:09:40,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:09:40,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:09:41,956 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:09:41,956 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-16 17:09:41,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:09:41 BoogieIcfgContainer [2019-09-16 17:09:41,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:09:41,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:09:41,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:09:41,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:09:41,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:09:39" (1/3) ... [2019-09-16 17:09:41,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ef6966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:09:41, skipping insertion in model container [2019-09-16 17:09:41,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:40" (2/3) ... [2019-09-16 17:09:41,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ef6966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:09:41, skipping insertion in model container [2019-09-16 17:09:41,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:09:41" (3/3) ... [2019-09-16 17:09:41,970 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product35.cil.c [2019-09-16 17:09:41,981 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:09:41,992 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:09:42,010 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:09:42,041 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:09:42,041 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:09:42,041 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:09:42,041 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:09:42,041 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:09:42,041 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:09:42,041 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:09:42,042 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:09:42,059 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states. [2019-09-16 17:09:42,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-16 17:09:42,073 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:42,074 INFO L407 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] [2019-09-16 17:09:42,076 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:42,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:42,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1963515353, now seen corresponding path program 1 times [2019-09-16 17:09:42,084 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:42,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:42,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:42,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:42,136 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:42,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:42,510 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:42,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:09:42,511 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:42,521 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:09:42,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:09:42,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:09:42,548 INFO L87 Difference]: Start difference. First operand 167 states. Second operand 2 states. [2019-09-16 17:09:42,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:42,603 INFO L93 Difference]: Finished difference Result 135 states and 157 transitions. [2019-09-16 17:09:42,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:09:42,605 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-16 17:09:42,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:42,631 INFO L225 Difference]: With dead ends: 135 [2019-09-16 17:09:42,631 INFO L226 Difference]: Without dead ends: 124 [2019-09-16 17:09:42,634 INFO L636 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 [2019-09-16 17:09:42,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2019-09-16 17:09:42,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2019-09-16 17:09:42,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-09-16 17:09:42,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 145 transitions. [2019-09-16 17:09:42,693 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 145 transitions. Word has length 59 [2019-09-16 17:09:42,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:42,694 INFO L475 AbstractCegarLoop]: Abstraction has 124 states and 145 transitions. [2019-09-16 17:09:42,694 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:09:42,694 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 145 transitions. [2019-09-16 17:09:42,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-16 17:09:42,698 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:42,699 INFO L407 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] [2019-09-16 17:09:42,699 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:42,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:42,700 INFO L82 PathProgramCache]: Analyzing trace with hash -653096167, now seen corresponding path program 1 times [2019-09-16 17:09:42,700 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:42,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:42,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:42,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:42,704 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:42,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:42,852 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:42,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:09:42,853 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:42,855 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:09:42,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:09:42,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:09:42,856 INFO L87 Difference]: Start difference. First operand 124 states and 145 transitions. Second operand 3 states. [2019-09-16 17:09:42,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:42,890 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2019-09-16 17:09:42,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:09:42,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-16 17:09:42,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:42,896 INFO L225 Difference]: With dead ends: 115 [2019-09-16 17:09:42,896 INFO L226 Difference]: Without dead ends: 115 [2019-09-16 17:09:42,897 INFO L636 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 [2019-09-16 17:09:42,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2019-09-16 17:09:42,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2019-09-16 17:09:42,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-09-16 17:09:42,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 133 transitions. [2019-09-16 17:09:42,910 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 133 transitions. Word has length 60 [2019-09-16 17:09:42,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:42,910 INFO L475 AbstractCegarLoop]: Abstraction has 115 states and 133 transitions. [2019-09-16 17:09:42,910 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:09:42,910 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 133 transitions. [2019-09-16 17:09:42,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-16 17:09:42,912 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:42,913 INFO L407 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] [2019-09-16 17:09:42,913 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:42,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:42,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1851002156, now seen corresponding path program 1 times [2019-09-16 17:09:42,914 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:42,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:42,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:42,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:42,917 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:43,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:43,075 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:43,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:09:43,076 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:43,076 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:09:43,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:09:43,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:09:43,077 INFO L87 Difference]: Start difference. First operand 115 states and 133 transitions. Second operand 7 states. [2019-09-16 17:09:43,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:43,514 INFO L93 Difference]: Finished difference Result 258 states and 308 transitions. [2019-09-16 17:09:43,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:09:43,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-09-16 17:09:43,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:43,522 INFO L225 Difference]: With dead ends: 258 [2019-09-16 17:09:43,522 INFO L226 Difference]: Without dead ends: 258 [2019-09-16 17:09:43,524 INFO L636 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 [2019-09-16 17:09:43,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2019-09-16 17:09:43,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 238. [2019-09-16 17:09:43,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-09-16 17:09:43,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 286 transitions. [2019-09-16 17:09:43,582 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 286 transitions. Word has length 64 [2019-09-16 17:09:43,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:43,582 INFO L475 AbstractCegarLoop]: Abstraction has 238 states and 286 transitions. [2019-09-16 17:09:43,582 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:09:43,583 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 286 transitions. [2019-09-16 17:09:43,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-16 17:09:43,586 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:43,586 INFO L407 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] [2019-09-16 17:09:43,586 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:43,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:43,587 INFO L82 PathProgramCache]: Analyzing trace with hash -601082987, now seen corresponding path program 1 times [2019-09-16 17:09:43,587 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:43,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:43,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:43,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:43,591 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-16 17:09:43,765 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:43,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:09:43,765 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:43,766 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:09:43,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:09:43,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:09:43,767 INFO L87 Difference]: Start difference. First operand 238 states and 286 transitions. Second operand 6 states. [2019-09-16 17:09:43,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:43,986 INFO L93 Difference]: Finished difference Result 345 states and 413 transitions. [2019-09-16 17:09:43,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:09:43,987 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2019-09-16 17:09:43,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:43,991 INFO L225 Difference]: With dead ends: 345 [2019-09-16 17:09:43,991 INFO L226 Difference]: Without dead ends: 345 [2019-09-16 17:09:43,991 INFO L636 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 [2019-09-16 17:09:43,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2019-09-16 17:09:44,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 335. [2019-09-16 17:09:44,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2019-09-16 17:09:44,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 403 transitions. [2019-09-16 17:09:44,020 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 403 transitions. Word has length 70 [2019-09-16 17:09:44,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:44,021 INFO L475 AbstractCegarLoop]: Abstraction has 335 states and 403 transitions. [2019-09-16 17:09:44,021 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:09:44,021 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 403 transitions. [2019-09-16 17:09:44,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-09-16 17:09:44,028 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:44,028 INFO L407 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] [2019-09-16 17:09:44,029 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:44,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:44,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1418290782, now seen corresponding path program 1 times [2019-09-16 17:09:44,029 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:44,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:44,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:44,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:44,033 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:44,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:44,206 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:44,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 17:09:44,206 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:44,207 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:09:44,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:09:44,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:09:44,208 INFO L87 Difference]: Start difference. First operand 335 states and 403 transitions. Second operand 4 states. [2019-09-16 17:09:44,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:44,499 INFO L93 Difference]: Finished difference Result 921 states and 1161 transitions. [2019-09-16 17:09:44,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:09:44,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2019-09-16 17:09:44,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:44,508 INFO L225 Difference]: With dead ends: 921 [2019-09-16 17:09:44,509 INFO L226 Difference]: Without dead ends: 921 [2019-09-16 17:09:44,509 INFO L636 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 [2019-09-16 17:09:44,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2019-09-16 17:09:44,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 901. [2019-09-16 17:09:44,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2019-09-16 17:09:44,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1122 transitions. [2019-09-16 17:09:44,580 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1122 transitions. Word has length 87 [2019-09-16 17:09:44,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:44,581 INFO L475 AbstractCegarLoop]: Abstraction has 901 states and 1122 transitions. [2019-09-16 17:09:44,581 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:09:44,581 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1122 transitions. [2019-09-16 17:09:44,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-09-16 17:09:44,585 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:44,585 INFO L407 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] [2019-09-16 17:09:44,586 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:44,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:44,586 INFO L82 PathProgramCache]: Analyzing trace with hash 765386145, now seen corresponding path program 1 times [2019-09-16 17:09:44,586 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:44,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:44,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:44,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:44,594 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:44,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:44,704 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:44,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:09:44,704 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:44,705 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:09:44,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:09:44,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:09:44,706 INFO L87 Difference]: Start difference. First operand 901 states and 1122 transitions. Second operand 6 states. [2019-09-16 17:09:44,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:44,747 INFO L93 Difference]: Finished difference Result 931 states and 1154 transitions. [2019-09-16 17:09:44,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:09:44,747 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2019-09-16 17:09:44,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:44,754 INFO L225 Difference]: With dead ends: 931 [2019-09-16 17:09:44,755 INFO L226 Difference]: Without dead ends: 931 [2019-09-16 17:09:44,755 INFO L636 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 [2019-09-16 17:09:44,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2019-09-16 17:09:44,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 931. [2019-09-16 17:09:44,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 931 states. [2019-09-16 17:09:44,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1154 transitions. [2019-09-16 17:09:44,827 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1154 transitions. Word has length 87 [2019-09-16 17:09:44,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:44,829 INFO L475 AbstractCegarLoop]: Abstraction has 931 states and 1154 transitions. [2019-09-16 17:09:44,829 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:09:44,829 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1154 transitions. [2019-09-16 17:09:44,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-09-16 17:09:44,837 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:44,837 INFO L407 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] [2019-09-16 17:09:44,838 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:44,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:44,838 INFO L82 PathProgramCache]: Analyzing trace with hash -2143377757, now seen corresponding path program 1 times [2019-09-16 17:09:44,838 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:44,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:44,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:44,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:44,841 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:44,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:44,946 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:44,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-16 17:09:44,947 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:44,947 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-16 17:09:44,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-16 17:09:44,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:09:44,948 INFO L87 Difference]: Start difference. First operand 931 states and 1154 transitions. Second operand 8 states. [2019-09-16 17:09:44,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:44,995 INFO L93 Difference]: Finished difference Result 813 states and 988 transitions. [2019-09-16 17:09:44,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:09:44,996 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2019-09-16 17:09:44,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:45,004 INFO L225 Difference]: With dead ends: 813 [2019-09-16 17:09:45,004 INFO L226 Difference]: Without dead ends: 813 [2019-09-16 17:09:45,006 INFO L636 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 [2019-09-16 17:09:45,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2019-09-16 17:09:45,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 813. [2019-09-16 17:09:45,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 813 states. [2019-09-16 17:09:45,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 988 transitions. [2019-09-16 17:09:45,043 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 988 transitions. Word has length 87 [2019-09-16 17:09:45,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:45,043 INFO L475 AbstractCegarLoop]: Abstraction has 813 states and 988 transitions. [2019-09-16 17:09:45,043 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-16 17:09:45,043 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 988 transitions. [2019-09-16 17:09:45,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-09-16 17:09:45,045 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:45,046 INFO L407 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] [2019-09-16 17:09:45,046 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:45,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:45,047 INFO L82 PathProgramCache]: Analyzing trace with hash 858193610, now seen corresponding path program 1 times [2019-09-16 17:09:45,047 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:45,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:45,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:45,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:45,050 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:45,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:45,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:45,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-16 17:09:45,230 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:45,231 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-16 17:09:45,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-16 17:09:45,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:09:45,233 INFO L87 Difference]: Start difference. First operand 813 states and 988 transitions. Second operand 9 states. [2019-09-16 17:09:46,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:46,584 INFO L93 Difference]: Finished difference Result 1622 states and 1973 transitions. [2019-09-16 17:09:46,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-16 17:09:46,587 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2019-09-16 17:09:46,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:46,595 INFO L225 Difference]: With dead ends: 1622 [2019-09-16 17:09:46,595 INFO L226 Difference]: Without dead ends: 1622 [2019-09-16 17:09:46,596 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-16 17:09:46,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2019-09-16 17:09:46,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1430. [2019-09-16 17:09:46,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1430 states. [2019-09-16 17:09:46,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1722 transitions. [2019-09-16 17:09:46,655 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1722 transitions. Word has length 91 [2019-09-16 17:09:46,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:46,656 INFO L475 AbstractCegarLoop]: Abstraction has 1430 states and 1722 transitions. [2019-09-16 17:09:46,656 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-16 17:09:46,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1722 transitions. [2019-09-16 17:09:46,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-09-16 17:09:46,659 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:46,660 INFO L407 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] [2019-09-16 17:09:46,660 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:46,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:46,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1244109311, now seen corresponding path program 1 times [2019-09-16 17:09:46,661 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:46,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:46,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:46,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:46,663 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:46,802 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-16 17:09:46,802 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:09:46,802 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:09:46,805 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 135 with the following transitions: [2019-09-16 17:09:46,807 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] [2019-09-16 17:09:46,847 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:09:46,847 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:09:46,924 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:09:46,926 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. [2019-09-16 17:09:46,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:46,931 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:09:47,000 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-16 17:09:47,000 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:09:47,010 INFO L420 sIntCurrentIteration]: We unified 133 AI predicates to 133 [2019-09-16 17:09:47,010 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:09:47,011 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:09:47,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-16 17:09:47,011 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:47,012 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:09:47,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:09:47,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:09:47,015 INFO L87 Difference]: Start difference. First operand 1430 states and 1722 transitions. Second operand 2 states. [2019-09-16 17:09:47,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:47,015 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-16 17:09:47,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:09:47,016 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 134 [2019-09-16 17:09:47,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:47,016 INFO L225 Difference]: With dead ends: 2 [2019-09-16 17:09:47,016 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:09:47,016 INFO L636 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 [2019-09-16 17:09:47,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:09:47,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:09:47,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:09:47,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:09:47,021 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 134 [2019-09-16 17:09:47,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:47,021 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:09:47,022 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:09:47,022 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:09:47,022 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:09:47,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:09:47 BoogieIcfgContainer [2019-09-16 17:09:47,028 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:09:47,031 INFO L168 Benchmark]: Toolchain (without parser) took 7203.45 ms. Allocated memory was 140.0 MB in the beginning and 323.5 MB in the end (delta: 183.5 MB). Free memory was 87.2 MB in the beginning and 145.4 MB in the end (delta: -58.2 MB). Peak memory consumption was 125.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:47,033 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 106.1 MB in the beginning and 105.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:09:47,035 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.28 ms. Allocated memory was 140.0 MB in the beginning and 198.7 MB in the end (delta: 58.7 MB). Free memory was 86.9 MB in the beginning and 164.7 MB in the end (delta: -77.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:47,036 INFO L168 Benchmark]: Boogie Preprocessor took 128.89 ms. Allocated memory is still 198.7 MB. Free memory was 164.7 MB in the beginning and 160.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:47,038 INFO L168 Benchmark]: RCFGBuilder took 1269.34 ms. Allocated memory was 198.7 MB in the beginning and 223.3 MB in the end (delta: 24.6 MB). Free memory was 160.4 MB in the beginning and 192.3 MB in the end (delta: -31.9 MB). Peak memory consumption was 90.6 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:47,044 INFO L168 Benchmark]: TraceAbstraction took 5068.46 ms. Allocated memory was 223.3 MB in the beginning and 323.5 MB in the end (delta: 100.1 MB). Free memory was 190.9 MB in the beginning and 145.4 MB in the end (delta: 45.6 MB). Peak memory consumption was 145.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:47,052 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 106.1 MB in the beginning and 105.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 732.28 ms. Allocated memory was 140.0 MB in the beginning and 198.7 MB in the end (delta: 58.7 MB). Free memory was 86.9 MB in the beginning and 164.7 MB in the end (delta: -77.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.89 ms. Allocated memory is still 198.7 MB. Free memory was 164.7 MB in the beginning and 160.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1269.34 ms. Allocated memory was 198.7 MB in the beginning and 223.3 MB in the end (delta: 24.6 MB). Free memory was 160.4 MB in the beginning and 192.3 MB in the end (delta: -31.9 MB). Peak memory consumption was 90.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5068.46 ms. Allocated memory was 223.3 MB in the beginning and 323.5 MB in the end (delta: 100.1 MB). Free memory was 190.9 MB in the beginning and 145.4 MB in the end (delta: 45.6 MB). Peak memory consumption was 145.7 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, 4.9s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 2.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1321 SDtfs, 816 SDslu, 3188 SDs, 0 SdLazy, 1144 SolverSat, 147 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 213 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1430occurred 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, 102962 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...