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_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:31:38,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:31:38,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:31:38,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:31:38,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:31:38,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:31:38,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:31:38,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:31:38,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:31:38,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:31:38,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:31:38,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:31:38,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:31:38,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:31:38,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:31:38,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:31:38,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:31:38,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:31:38,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:31:38,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:31:38,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:31:38,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:31:38,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:31:38,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:31:38,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:31:38,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:31:38,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:31:38,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:31:38,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:31:38,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:31:38,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:31:39,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:31:39,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:31:39,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:31:39,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:31:39,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:31:39,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:31:39,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:31:39,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:31:39,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:31:39,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:31:39,007 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 [2019-09-20 13:31:39,028 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:31:39,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:31:39,029 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:31:39,029 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:31:39,030 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:31:39,030 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:31:39,031 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:31:39,031 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:31:39,031 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:31:39,031 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:31:39,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:31:39,034 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:31:39,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:31:39,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:31:39,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:31:39,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:31:39,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:31:39,035 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:31:39,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:31:39,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:31:39,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:31:39,036 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:31:39,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:31:39,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:31:39,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:31:39,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:31:39,037 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:31:39,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:31:39,038 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:31:39,038 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:31:39,090 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:31:39,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:31:39,115 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:31:39,117 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:31:39,118 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:31:39,119 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c [2019-09-20 13:31:39,194 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86a17e199/68e9b65f7a1f41a2afb9662ba167fa67/FLAGbad59aea8 [2019-09-20 13:31:39,718 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:31:39,723 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c [2019-09-20 13:31:39,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86a17e199/68e9b65f7a1f41a2afb9662ba167fa67/FLAGbad59aea8 [2019-09-20 13:31:39,991 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86a17e199/68e9b65f7a1f41a2afb9662ba167fa67 [2019-09-20 13:31:40,002 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:31:40,004 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:31:40,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:40,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:31:40,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:31:40,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:39" (1/1) ... [2019-09-20 13:31:40,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@348f237d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:40, skipping insertion in model container [2019-09-20 13:31:40,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:39" (1/1) ... [2019-09-20 13:31:40,026 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:31:40,101 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:31:40,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:40,690 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:31:40,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:40,827 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:31:40,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:40 WrapperNode [2019-09-20 13:31:40,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:40,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:31:40,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:31:40,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:31:40,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:40" (1/1) ... [2019-09-20 13:31:40,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:40" (1/1) ... [2019-09-20 13:31:40,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:40" (1/1) ... [2019-09-20 13:31:40,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:40" (1/1) ... [2019-09-20 13:31:40,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:40" (1/1) ... [2019-09-20 13:31:40,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:40" (1/1) ... [2019-09-20 13:31:40,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:40" (1/1) ... [2019-09-20 13:31:40,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:31:40,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:31:40,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:31:40,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:31:40,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:40" (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 [2019-09-20 13:31:40,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:31:40,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:31:40,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:40,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:40,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:40,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:40,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:31:40,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:31:40,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:31:40,981 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:31:40,982 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:31:40,982 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:31:40,982 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-20 13:31:40,983 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:31:40,983 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:31:40,984 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:31:40,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:31:40,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:31:40,984 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:31:40,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:31:40,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:31:40,984 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:31:40,985 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:31:40,985 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:31:40,985 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:31:40,985 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:31:40,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:40,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:40,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:40,986 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:31:40,986 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:31:40,986 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:31:40,986 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:31:40,987 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:31:40,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:31:40,987 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:31:40,987 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:31:40,987 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:31:40,987 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:31:40,988 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:31:40,988 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:31:40,988 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:31:40,988 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:31:40,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:31:40,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:31:40,988 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:31:40,988 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:31:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:31:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:31:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:31:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:31:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:31:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:31:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:31:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:31:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:31:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:31:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:31:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:31:40,991 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:31:40,991 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:31:40,991 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:31:40,991 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:31:40,991 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:31:40,991 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:31:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:31:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:31:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:31:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:31:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:31:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:31:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:31:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:31:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:31:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-20 13:31:40,994 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:31:40,994 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:31:40,994 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:31:40,994 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:31:40,994 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:31:40,994 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:31:40,994 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:31:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:31:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:31:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:31:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:31:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:31:40,996 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:31:40,996 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:31:40,996 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:31:40,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:31:40,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:31:40,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:31:42,191 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:31:42,192 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:31:42,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:42 BoogieIcfgContainer [2019-09-20 13:31:42,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:31:42,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:31:42,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:31:42,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:31:42,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:31:39" (1/3) ... [2019-09-20 13:31:42,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f370bdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:42, skipping insertion in model container [2019-09-20 13:31:42,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:40" (2/3) ... [2019-09-20 13:31:42,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f370bdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:42, skipping insertion in model container [2019-09-20 13:31:42,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:42" (3/3) ... [2019-09-20 13:31:42,202 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product53.cil.c [2019-09-20 13:31:42,212 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:31:42,221 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:31:42,239 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:31:42,266 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:31:42,267 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:31:42,267 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:31:42,267 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:31:42,267 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:31:42,267 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:31:42,267 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:31:42,268 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:31:42,289 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2019-09-20 13:31:42,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:31:42,304 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:42,306 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] [2019-09-20 13:31:42,308 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:42,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:42,314 INFO L82 PathProgramCache]: Analyzing trace with hash 2103350570, now seen corresponding path program 1 times [2019-09-20 13:31:42,317 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:42,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:42,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:42,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:42,381 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:42,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:42,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:42,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:31:42,714 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:42,720 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:42,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:42,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:42,740 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 2 states. [2019-09-20 13:31:42,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:42,773 INFO L93 Difference]: Finished difference Result 167 states and 196 transitions. [2019-09-20 13:31:42,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:42,775 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:31:42,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:42,789 INFO L225 Difference]: With dead ends: 167 [2019-09-20 13:31:42,789 INFO L226 Difference]: Without dead ends: 156 [2019-09-20 13:31:42,791 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 [2019-09-20 13:31:42,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2019-09-20 13:31:42,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2019-09-20 13:31:42,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-09-20 13:31:42,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 184 transitions. [2019-09-20 13:31:42,848 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 184 transitions. Word has length 59 [2019-09-20 13:31:42,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:42,849 INFO L475 AbstractCegarLoop]: Abstraction has 156 states and 184 transitions. [2019-09-20 13:31:42,849 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:42,849 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 184 transitions. [2019-09-20 13:31:42,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:31:42,853 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:42,854 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] [2019-09-20 13:31:42,854 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:42,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:42,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1976637745, now seen corresponding path program 1 times [2019-09-20 13:31:42,855 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:42,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:42,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:42,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:42,858 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:42,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:42,957 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:42,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:31:42,958 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:42,959 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:31:42,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:31:42,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:31:42,960 INFO L87 Difference]: Start difference. First operand 156 states and 184 transitions. Second operand 3 states. [2019-09-20 13:31:42,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:42,978 INFO L93 Difference]: Finished difference Result 147 states and 172 transitions. [2019-09-20 13:31:42,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:31:42,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:31:42,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:42,981 INFO L225 Difference]: With dead ends: 147 [2019-09-20 13:31:42,982 INFO L226 Difference]: Without dead ends: 147 [2019-09-20 13:31:42,982 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 [2019-09-20 13:31:42,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-09-20 13:31:42,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2019-09-20 13:31:42,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-09-20 13:31:42,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 172 transitions. [2019-09-20 13:31:42,998 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 172 transitions. Word has length 60 [2019-09-20 13:31:42,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:42,998 INFO L475 AbstractCegarLoop]: Abstraction has 147 states and 172 transitions. [2019-09-20 13:31:42,999 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:31:42,999 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 172 transitions. [2019-09-20 13:31:43,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-20 13:31:43,001 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:43,002 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] [2019-09-20 13:31:43,002 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:43,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:43,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1329026362, now seen corresponding path program 1 times [2019-09-20 13:31:43,003 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:43,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:43,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:43,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:43,006 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:43,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:43,141 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:43,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:43,141 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:43,142 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:43,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:43,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:43,142 INFO L87 Difference]: Start difference. First operand 147 states and 172 transitions. Second operand 7 states. [2019-09-20 13:31:43,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:43,539 INFO L93 Difference]: Finished difference Result 147 states and 171 transitions. [2019-09-20 13:31:43,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:31:43,539 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-09-20 13:31:43,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:43,542 INFO L225 Difference]: With dead ends: 147 [2019-09-20 13:31:43,542 INFO L226 Difference]: Without dead ends: 147 [2019-09-20 13:31:43,543 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:31:43,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-09-20 13:31:43,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2019-09-20 13:31:43,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-09-20 13:31:43,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 171 transitions. [2019-09-20 13:31:43,566 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 171 transitions. Word has length 64 [2019-09-20 13:31:43,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:43,573 INFO L475 AbstractCegarLoop]: Abstraction has 147 states and 171 transitions. [2019-09-20 13:31:43,573 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:43,573 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 171 transitions. [2019-09-20 13:31:43,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-09-20 13:31:43,580 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:43,581 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] [2019-09-20 13:31:43,584 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:43,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:43,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1768093168, now seen corresponding path program 1 times [2019-09-20 13:31:43,585 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:43,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:43,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:43,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:43,590 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:43,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:43,799 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:43,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:31:43,799 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:43,800 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:31:43,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:31:43,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:31:43,802 INFO L87 Difference]: Start difference. First operand 147 states and 171 transitions. Second operand 5 states. [2019-09-20 13:31:44,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:44,387 INFO L93 Difference]: Finished difference Result 256 states and 296 transitions. [2019-09-20 13:31:44,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:31:44,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2019-09-20 13:31:44,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:44,391 INFO L225 Difference]: With dead ends: 256 [2019-09-20 13:31:44,391 INFO L226 Difference]: Without dead ends: 256 [2019-09-20 13:31:44,392 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:31:44,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2019-09-20 13:31:44,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 238. [2019-09-20 13:31:44,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-09-20 13:31:44,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 272 transitions. [2019-09-20 13:31:44,411 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 272 transitions. Word has length 82 [2019-09-20 13:31:44,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:44,412 INFO L475 AbstractCegarLoop]: Abstraction has 238 states and 272 transitions. [2019-09-20 13:31:44,412 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:31:44,412 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 272 transitions. [2019-09-20 13:31:44,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-20 13:31:44,414 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:44,415 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, 1, 1, 1, 1, 1] [2019-09-20 13:31:44,415 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:44,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:44,415 INFO L82 PathProgramCache]: Analyzing trace with hash -856267590, now seen corresponding path program 1 times [2019-09-20 13:31:44,416 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:44,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:44,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:44,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:44,418 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:44,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:31:44,583 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:44,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:44,583 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:44,584 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:44,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:44,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:44,585 INFO L87 Difference]: Start difference. First operand 238 states and 272 transitions. Second operand 7 states. [2019-09-20 13:31:45,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:45,290 INFO L93 Difference]: Finished difference Result 255 states and 296 transitions. [2019-09-20 13:31:45,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:31:45,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-09-20 13:31:45,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:45,294 INFO L225 Difference]: With dead ends: 255 [2019-09-20 13:31:45,294 INFO L226 Difference]: Without dead ends: 255 [2019-09-20 13:31:45,294 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:31:45,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2019-09-20 13:31:45,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 237. [2019-09-20 13:31:45,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2019-09-20 13:31:45,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 269 transitions. [2019-09-20 13:31:45,309 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 269 transitions. Word has length 96 [2019-09-20 13:31:45,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:45,309 INFO L475 AbstractCegarLoop]: Abstraction has 237 states and 269 transitions. [2019-09-20 13:31:45,309 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:45,310 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 269 transitions. [2019-09-20 13:31:45,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-20 13:31:45,311 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:45,312 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, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:45,312 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:45,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:45,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1083119363, now seen corresponding path program 1 times [2019-09-20 13:31:45,313 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:45,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:45,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:45,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:45,316 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:45,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:45,429 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:45,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:31:45,430 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:45,430 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:31:45,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:31:45,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:31:45,431 INFO L87 Difference]: Start difference. First operand 237 states and 269 transitions. Second operand 6 states. [2019-09-20 13:31:45,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:45,460 INFO L93 Difference]: Finished difference Result 242 states and 274 transitions. [2019-09-20 13:31:45,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:31:45,460 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-09-20 13:31:45,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:45,463 INFO L225 Difference]: With dead ends: 242 [2019-09-20 13:31:45,463 INFO L226 Difference]: Without dead ends: 242 [2019-09-20 13:31:45,464 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 [2019-09-20 13:31:45,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2019-09-20 13:31:45,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2019-09-20 13:31:45,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2019-09-20 13:31:45,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 274 transitions. [2019-09-20 13:31:45,476 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 274 transitions. Word has length 97 [2019-09-20 13:31:45,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:45,477 INFO L475 AbstractCegarLoop]: Abstraction has 242 states and 274 transitions. [2019-09-20 13:31:45,477 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:31:45,477 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 274 transitions. [2019-09-20 13:31:45,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-20 13:31:45,479 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:45,479 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, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:45,479 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:45,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:45,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1010732805, now seen corresponding path program 1 times [2019-09-20 13:31:45,480 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:45,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:45,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:45,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:45,482 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:45,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:45,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:45,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:31:45,602 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:45,603 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:31:45,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:31:45,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:31:45,604 INFO L87 Difference]: Start difference. First operand 242 states and 274 transitions. Second operand 8 states. [2019-09-20 13:31:45,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:45,639 INFO L93 Difference]: Finished difference Result 249 states and 281 transitions. [2019-09-20 13:31:45,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:31:45,640 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2019-09-20 13:31:45,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:45,645 INFO L225 Difference]: With dead ends: 249 [2019-09-20 13:31:45,645 INFO L226 Difference]: Without dead ends: 249 [2019-09-20 13:31:45,646 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 [2019-09-20 13:31:45,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2019-09-20 13:31:45,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 246. [2019-09-20 13:31:45,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2019-09-20 13:31:45,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 278 transitions. [2019-09-20 13:31:45,662 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 278 transitions. Word has length 97 [2019-09-20 13:31:45,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:45,662 INFO L475 AbstractCegarLoop]: Abstraction has 246 states and 278 transitions. [2019-09-20 13:31:45,662 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:31:45,662 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 278 transitions. [2019-09-20 13:31:45,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-20 13:31:45,665 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:45,665 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, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:45,665 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:45,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:45,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1340498566, now seen corresponding path program 1 times [2019-09-20 13:31:45,666 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:45,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:45,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:45,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:45,670 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:45,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:45,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:31:45,793 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:45,793 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:31:45,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:31:45,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:31:45,796 INFO L87 Difference]: Start difference. First operand 246 states and 278 transitions. Second operand 4 states. [2019-09-20 13:31:46,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:46,053 INFO L93 Difference]: Finished difference Result 502 states and 590 transitions. [2019-09-20 13:31:46,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:31:46,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2019-09-20 13:31:46,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:46,061 INFO L225 Difference]: With dead ends: 502 [2019-09-20 13:31:46,061 INFO L226 Difference]: Without dead ends: 502 [2019-09-20 13:31:46,062 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 [2019-09-20 13:31:46,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2019-09-20 13:31:46,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 493. [2019-09-20 13:31:46,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2019-09-20 13:31:46,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 573 transitions. [2019-09-20 13:31:46,088 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 573 transitions. Word has length 97 [2019-09-20 13:31:46,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:46,089 INFO L475 AbstractCegarLoop]: Abstraction has 493 states and 573 transitions. [2019-09-20 13:31:46,089 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:31:46,089 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 573 transitions. [2019-09-20 13:31:46,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-09-20 13:31:46,092 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:46,092 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:46,092 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:46,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:46,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1424414732, now seen corresponding path program 1 times [2019-09-20 13:31:46,094 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:46,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:46,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:46,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:46,098 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:46,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:46,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:46,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:31:46,328 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:46,329 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:31:46,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:31:46,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:31:46,330 INFO L87 Difference]: Start difference. First operand 493 states and 573 transitions. Second operand 9 states. [2019-09-20 13:31:47,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:47,706 INFO L93 Difference]: Finished difference Result 892 states and 1040 transitions. [2019-09-20 13:31:47,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:31:47,707 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2019-09-20 13:31:47,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:47,713 INFO L225 Difference]: With dead ends: 892 [2019-09-20 13:31:47,713 INFO L226 Difference]: Without dead ends: 892 [2019-09-20 13:31:47,714 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 [2019-09-20 13:31:47,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2019-09-20 13:31:47,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 816. [2019-09-20 13:31:47,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2019-09-20 13:31:47,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 937 transitions. [2019-09-20 13:31:47,754 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 937 transitions. Word has length 101 [2019-09-20 13:31:47,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:47,755 INFO L475 AbstractCegarLoop]: Abstraction has 816 states and 937 transitions. [2019-09-20 13:31:47,755 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:31:47,755 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 937 transitions. [2019-09-20 13:31:47,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-09-20 13:31:47,758 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:47,758 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:47,759 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:47,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:47,759 INFO L82 PathProgramCache]: Analyzing trace with hash -578790576, now seen corresponding path program 1 times [2019-09-20 13:31:47,759 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:47,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:47,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:47,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:47,762 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:47,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:47,938 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-20 13:31:47,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:31:47,939 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:31:47,940 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 179 with the following transitions: [2019-09-20 13:31:47,943 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [83], [85], [88], [92], [93], [94], [110], [114], [115], [116], [119], [121], [127], [131], [134], [135], [136], [145], [149], [153], [156], [159], [161], [167], [169], [172], [187], [188], [198], [199], [200], [202], [207], [209], [210], [211], [212], [213], [214], [218], [221], [225], [231], [260], [264], [265], [268], [270], [273], [280], [283], [286], [290], [291], [294], [297], [299], [305], [309], [312], [313], [314], [315], [317], [318], [319], [321], [324], [326], [329], [332], [341], [343], [344], [345], [369], [371], [372], [439], [440], [450], [458], [459], [460], [461], [462], [463], [464], [465], [466], [498], [499], [500], [501], [504], [505], [506], [507], [508], [509], [512], [513], [516], [517], [518], [519], [520], [521], [522], [523], [524], [525], [530], [531], [532], [533], [536], [537], [538], [539], [542], [543], [544], [545], [546], [547], [548], [549], [550], [551], [552], [556], [557], [558], [560], [561], [566], [567], [568] [2019-09-20 13:31:48,014 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:31:48,015 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:31:48,158 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:31:48,159 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 69 root evaluator evaluations with a maximum evaluation depth of 0. Performed 69 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-09-20 13:31:48,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:48,164 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:31:48,262 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:31:48,263 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:31:48,267 INFO L420 sIntCurrentIteration]: We unified 177 AI predicates to 177 [2019-09-20 13:31:48,268 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:31:48,268 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:31:48,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-20 13:31:48,269 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:48,269 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:48,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:48,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:48,270 INFO L87 Difference]: Start difference. First operand 816 states and 937 transitions. Second operand 2 states. [2019-09-20 13:31:48,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:48,271 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:31:48,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:48,271 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 178 [2019-09-20 13:31:48,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:48,271 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:31:48,271 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:31:48,272 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:48,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:31:48,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:31:48,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:31:48,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:31:48,273 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 178 [2019-09-20 13:31:48,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:48,273 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:31:48,273 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:48,273 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:31:48,274 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:31:48,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:31:48 BoogieIcfgContainer [2019-09-20 13:31:48,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:31:48,281 INFO L168 Benchmark]: Toolchain (without parser) took 8276.38 ms. Allocated memory was 135.8 MB in the beginning and 371.2 MB in the end (delta: 235.4 MB). Free memory was 82.8 MB in the beginning and 325.0 MB in the end (delta: -242.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:31:48,282 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 135.8 MB. Free memory was 101.8 MB in the beginning and 101.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:31:48,283 INFO L168 Benchmark]: CACSL2BoogieTranslator took 820.27 ms. Allocated memory was 135.8 MB in the beginning and 196.6 MB in the end (delta: 60.8 MB). Free memory was 82.6 MB in the beginning and 160.7 MB in the end (delta: -78.1 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:48,284 INFO L168 Benchmark]: Boogie Preprocessor took 88.59 ms. Allocated memory is still 196.6 MB. Free memory was 160.7 MB in the beginning and 156.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:48,285 INFO L168 Benchmark]: RCFGBuilder took 1276.54 ms. Allocated memory was 196.6 MB in the beginning and 212.9 MB in the end (delta: 16.3 MB). Free memory was 156.7 MB in the beginning and 183.3 MB in the end (delta: -26.6 MB). Peak memory consumption was 97.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:48,287 INFO L168 Benchmark]: TraceAbstraction took 6083.95 ms. Allocated memory was 212.9 MB in the beginning and 371.2 MB in the end (delta: 158.3 MB). Free memory was 183.3 MB in the beginning and 325.0 MB in the end (delta: -141.7 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:48,299 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 135.8 MB. Free memory was 101.8 MB in the beginning and 101.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 820.27 ms. Allocated memory was 135.8 MB in the beginning and 196.6 MB in the end (delta: 60.8 MB). Free memory was 82.6 MB in the beginning and 160.7 MB in the end (delta: -78.1 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.59 ms. Allocated memory is still 196.6 MB. Free memory was 160.7 MB in the beginning and 156.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1276.54 ms. Allocated memory was 196.6 MB in the beginning and 212.9 MB in the end (delta: 16.3 MB). Free memory was 156.7 MB in the beginning and 183.3 MB in the end (delta: -26.6 MB). Peak memory consumption was 97.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6083.95 ms. Allocated memory was 212.9 MB in the beginning and 371.2 MB in the end (delta: 158.3 MB). Free memory was 183.3 MB in the beginning and 325.0 MB in the end (delta: -141.7 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 902]: 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 43 procedures, 255 locations, 1 error locations. SAFE Result, 6.0s OverallTime, 10 OverallIterations, 3 TraceHistogramMax, 3.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1739 SDtfs, 1200 SDslu, 3452 SDs, 0 SdLazy, 1915 SolverSat, 422 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 285 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=816occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.8022598870056498 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 124 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 931 NumberOfCodeBlocks, 931 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 921 ConstructedInterpolants, 0 QuantifiedInterpolants, 159414 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 64/73 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...