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_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:31:40,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:31:40,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:31:40,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:31:40,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:31:40,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:31:40,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:31:40,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:31:40,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:31:40,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:31:40,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:31:40,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:31:40,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:31:40,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:31:40,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:31:40,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:31:40,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:31:40,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:31:40,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:31:40,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:31:40,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:31:40,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:31:40,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:31:40,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:31:40,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:31:40,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:31:40,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:31:40,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:31:40,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:31:40,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:31:40,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:31:40,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:31:40,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:31:40,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:31:40,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:31:40,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:31:40,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:31:40,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:31:40,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:31:40,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:31:40,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:31:40,744 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 13:31:40,759 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:31:40,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:31:40,760 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:31:40,760 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:31:40,761 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:31:40,761 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:31:40,761 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:31:40,762 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:31:40,762 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:31:40,762 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:31:40,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:31:40,763 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:31:40,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:31:40,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:31:40,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:31:40,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:31:40,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:31:40,764 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:31:40,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:31:40,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:31:40,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:31:40,765 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:31:40,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:31:40,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:31:40,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:31:40,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:31:40,766 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:31:40,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:31:40,766 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:31:40,767 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:31:40,795 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:31:40,807 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:31:40,811 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:31:40,812 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:31:40,812 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:31:40,813 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c [2019-09-20 13:31:40,880 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e26679177/39e86cfcc3a14a5f9b3c89277421302d/FLAGd083bf724 [2019-09-20 13:31:41,472 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:31:41,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c [2019-09-20 13:31:41,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e26679177/39e86cfcc3a14a5f9b3c89277421302d/FLAGd083bf724 [2019-09-20 13:31:41,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e26679177/39e86cfcc3a14a5f9b3c89277421302d [2019-09-20 13:31:41,730 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:31:41,732 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:31:41,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:41,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:31:41,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:31:41,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:41" (1/1) ... [2019-09-20 13:31:41,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2476905b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:41, skipping insertion in model container [2019-09-20 13:31:41,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:41" (1/1) ... [2019-09-20 13:31:41,754 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:31:41,825 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:31:42,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:42,336 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:31:42,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:42,479 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:31:42,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:42 WrapperNode [2019-09-20 13:31:42,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:42,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:31:42,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:31:42,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:31:42,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:42" (1/1) ... [2019-09-20 13:31:42,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:42" (1/1) ... [2019-09-20 13:31:42,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:42" (1/1) ... [2019-09-20 13:31:42,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:42" (1/1) ... [2019-09-20 13:31:42,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:42" (1/1) ... [2019-09-20 13:31:42,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:42" (1/1) ... [2019-09-20 13:31:42,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:42" (1/1) ... [2019-09-20 13:31:42,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:31:42,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:31:42,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:31:42,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:31:42,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:42" (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 13:31:42,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:31:42,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:31:42,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:42,635 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:31:42,635 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:31:42,635 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:31:42,635 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:31:42,636 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:31:42,636 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:31:42,636 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:31:42,636 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:31:42,637 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:31:42,637 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:31:42,638 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:31:42,638 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-20 13:31:42,639 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:31:42,639 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:31:42,639 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:31:42,639 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:31:42,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:31:42,640 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:31:42,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:31:42,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:31:42,640 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:31:42,640 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:31:42,641 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:31:42,642 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:31:42,642 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:31:42,642 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:31:42,642 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:31:42,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:31:42,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:42,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:42,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:42,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:42,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:42,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:42,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:31:42,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:31:42,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:31:42,644 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:31:42,644 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:31:42,644 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:31:42,644 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:31:42,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:31:42,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:31:42,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:31:42,645 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:31:42,645 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:31:42,645 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:31:42,645 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:31:42,645 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:31:42,645 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:31:42,646 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:31:42,646 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:31:42,646 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:31:42,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:31:42,646 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:31:42,647 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:31:42,647 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:31:42,647 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:31:42,647 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:31:42,647 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:31:42,647 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:31:42,648 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:42,648 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:42,648 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:31:42,649 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:31:42,649 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:31:42,649 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:31:42,649 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:31:42,649 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-20 13:31:42,649 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:31:42,650 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:31:42,650 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:31:42,651 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:31:42,651 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:31:42,651 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:31:42,651 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:31:42,652 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:31:42,652 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:42,652 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:31:42,652 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:31:42,652 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:31:42,653 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:42,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:31:42,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:31:42,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:31:42,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:31:42,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:42,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:31:42,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:42,655 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:42,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:31:42,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:31:42,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:31:42,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:31:42,656 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:31:42,656 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:31:42,656 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:31:42,656 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:31:42,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:31:42,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:31:42,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:31:43,736 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:31:43,736 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:31:43,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:43 BoogieIcfgContainer [2019-09-20 13:31:43,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:31:43,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:31:43,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:31:43,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:31:43,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:31:41" (1/3) ... [2019-09-20 13:31:43,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edea590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:43, skipping insertion in model container [2019-09-20 13:31:43,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:42" (2/3) ... [2019-09-20 13:31:43,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edea590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:43, skipping insertion in model container [2019-09-20 13:31:43,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:43" (3/3) ... [2019-09-20 13:31:43,751 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product56.cil.c [2019-09-20 13:31:43,762 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:31:43,775 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:31:43,793 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:31:43,829 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:31:43,829 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:31:43,830 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:31:43,830 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:31:43,830 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:31:43,830 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:31:43,831 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:31:43,831 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:31:43,852 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states. [2019-09-20 13:31:43,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:31:43,867 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:43,868 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 13:31:43,871 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:43,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:43,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1747867680, now seen corresponding path program 1 times [2019-09-20 13:31:43,879 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:43,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:43,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:43,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:43,937 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:44,291 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 13:31:44,293 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:44,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:31:44,294 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:44,298 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:44,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:44,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:44,315 INFO L87 Difference]: Start difference. First operand 209 states. Second operand 2 states. [2019-09-20 13:31:44,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:44,358 INFO L93 Difference]: Finished difference Result 177 states and 208 transitions. [2019-09-20 13:31:44,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:44,359 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:31:44,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:44,373 INFO L225 Difference]: With dead ends: 177 [2019-09-20 13:31:44,373 INFO L226 Difference]: Without dead ends: 166 [2019-09-20 13:31:44,375 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 13:31:44,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2019-09-20 13:31:44,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2019-09-20 13:31:44,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2019-09-20 13:31:44,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 196 transitions. [2019-09-20 13:31:44,438 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 196 transitions. Word has length 59 [2019-09-20 13:31:44,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:44,438 INFO L475 AbstractCegarLoop]: Abstraction has 166 states and 196 transitions. [2019-09-20 13:31:44,438 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:44,439 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 196 transitions. [2019-09-20 13:31:44,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:31:44,445 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:44,445 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 13:31:44,445 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:44,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:44,446 INFO L82 PathProgramCache]: Analyzing trace with hash 2102602730, now seen corresponding path program 1 times [2019-09-20 13:31:44,447 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:44,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:44,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:44,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:44,451 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:44,623 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 13:31:44,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:44,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:31:44,624 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:44,626 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:31:44,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:31:44,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:31:44,628 INFO L87 Difference]: Start difference. First operand 166 states and 196 transitions. Second operand 3 states. [2019-09-20 13:31:44,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:44,667 INFO L93 Difference]: Finished difference Result 157 states and 184 transitions. [2019-09-20 13:31:44,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:31:44,670 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:31:44,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:44,675 INFO L225 Difference]: With dead ends: 157 [2019-09-20 13:31:44,676 INFO L226 Difference]: Without dead ends: 157 [2019-09-20 13:31:44,677 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 13:31:44,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-09-20 13:31:44,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-09-20 13:31:44,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-09-20 13:31:44,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 184 transitions. [2019-09-20 13:31:44,710 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 184 transitions. Word has length 60 [2019-09-20 13:31:44,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:44,711 INFO L475 AbstractCegarLoop]: Abstraction has 157 states and 184 transitions. [2019-09-20 13:31:44,711 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:31:44,711 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 184 transitions. [2019-09-20 13:31:44,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-20 13:31:44,723 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:44,723 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] [2019-09-20 13:31:44,723 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:44,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:44,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1388581610, now seen corresponding path program 1 times [2019-09-20 13:31:44,724 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:44,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:44,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:44,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:44,727 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:44,905 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 13:31:44,905 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:44,906 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:44,906 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:44,907 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:44,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:44,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:44,908 INFO L87 Difference]: Start difference. First operand 157 states and 184 transitions. Second operand 7 states. [2019-09-20 13:31:45,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:45,619 INFO L93 Difference]: Finished difference Result 342 states and 412 transitions. [2019-09-20 13:31:45,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:31:45,620 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-20 13:31:45,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:45,627 INFO L225 Difference]: With dead ends: 342 [2019-09-20 13:31:45,627 INFO L226 Difference]: Without dead ends: 342 [2019-09-20 13:31:45,628 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 [2019-09-20 13:31:45,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2019-09-20 13:31:45,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 330. [2019-09-20 13:31:45,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2019-09-20 13:31:45,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 400 transitions. [2019-09-20 13:31:45,689 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 400 transitions. Word has length 65 [2019-09-20 13:31:45,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:45,690 INFO L475 AbstractCegarLoop]: Abstraction has 330 states and 400 transitions. [2019-09-20 13:31:45,691 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:45,691 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 400 transitions. [2019-09-20 13:31:45,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-20 13:31:45,694 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:45,694 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] [2019-09-20 13:31:45,695 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:45,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:45,697 INFO L82 PathProgramCache]: Analyzing trace with hash -262157671, now seen corresponding path program 1 times [2019-09-20 13:31:45,697 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:45,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:45,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:45,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:45,700 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:45,866 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 13:31:45,866 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:45,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:45,867 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:45,867 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:45,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:45,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:45,868 INFO L87 Difference]: Start difference. First operand 330 states and 400 transitions. Second operand 7 states. [2019-09-20 13:31:46,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:46,743 INFO L93 Difference]: Finished difference Result 530 states and 662 transitions. [2019-09-20 13:31:46,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:31:46,744 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-20 13:31:46,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:46,751 INFO L225 Difference]: With dead ends: 530 [2019-09-20 13:31:46,751 INFO L226 Difference]: Without dead ends: 530 [2019-09-20 13:31:46,752 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 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 13:31:46,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2019-09-20 13:31:46,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 476. [2019-09-20 13:31:46,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2019-09-20 13:31:46,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 573 transitions. [2019-09-20 13:31:46,794 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 573 transitions. Word has length 70 [2019-09-20 13:31:46,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:46,795 INFO L475 AbstractCegarLoop]: Abstraction has 476 states and 573 transitions. [2019-09-20 13:31:46,795 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:46,795 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 573 transitions. [2019-09-20 13:31:46,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-20 13:31:46,798 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:46,798 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] [2019-09-20 13:31:46,798 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:46,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:46,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1621424268, now seen corresponding path program 1 times [2019-09-20 13:31:46,799 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:46,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:46,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:46,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:46,805 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:46,941 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 13:31:46,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:46,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:31:46,942 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:46,945 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:31:46,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:31:46,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:31:46,946 INFO L87 Difference]: Start difference. First operand 476 states and 573 transitions. Second operand 6 states. [2019-09-20 13:31:46,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:46,980 INFO L93 Difference]: Finished difference Result 486 states and 583 transitions. [2019-09-20 13:31:46,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:31:46,980 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-09-20 13:31:46,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:46,984 INFO L225 Difference]: With dead ends: 486 [2019-09-20 13:31:46,984 INFO L226 Difference]: Without dead ends: 486 [2019-09-20 13:31:46,985 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 13:31:46,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2019-09-20 13:31:47,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 486. [2019-09-20 13:31:47,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2019-09-20 13:31:47,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 583 transitions. [2019-09-20 13:31:47,011 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 583 transitions. Word has length 98 [2019-09-20 13:31:47,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:47,012 INFO L475 AbstractCegarLoop]: Abstraction has 486 states and 583 transitions. [2019-09-20 13:31:47,012 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:31:47,012 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 583 transitions. [2019-09-20 13:31:47,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-20 13:31:47,015 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:47,015 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] [2019-09-20 13:31:47,015 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:47,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:47,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1693810826, now seen corresponding path program 1 times [2019-09-20 13:31:47,016 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:47,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:47,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:47,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:47,019 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:47,115 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 13:31:47,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:47,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:31:47,115 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:47,116 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:31:47,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:31:47,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:31:47,117 INFO L87 Difference]: Start difference. First operand 486 states and 583 transitions. Second operand 8 states. [2019-09-20 13:31:47,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:47,149 INFO L93 Difference]: Finished difference Result 500 states and 597 transitions. [2019-09-20 13:31:47,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:31:47,150 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2019-09-20 13:31:47,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:47,154 INFO L225 Difference]: With dead ends: 500 [2019-09-20 13:31:47,154 INFO L226 Difference]: Without dead ends: 500 [2019-09-20 13:31:47,155 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 13:31:47,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-09-20 13:31:47,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 494. [2019-09-20 13:31:47,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2019-09-20 13:31:47,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 591 transitions. [2019-09-20 13:31:47,176 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 591 transitions. Word has length 98 [2019-09-20 13:31:47,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:47,177 INFO L475 AbstractCegarLoop]: Abstraction has 494 states and 591 transitions. [2019-09-20 13:31:47,177 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:31:47,177 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 591 transitions. [2019-09-20 13:31:47,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-20 13:31:47,179 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:47,180 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] [2019-09-20 13:31:47,180 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:47,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:47,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1364045065, now seen corresponding path program 1 times [2019-09-20 13:31:47,180 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:47,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:47,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:47,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:47,183 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:47,265 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 13:31:47,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:47,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:31:47,266 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:47,267 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:31:47,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:31:47,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:31:47,268 INFO L87 Difference]: Start difference. First operand 494 states and 591 transitions. Second operand 4 states. [2019-09-20 13:31:47,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:47,549 INFO L93 Difference]: Finished difference Result 1112 states and 1381 transitions. [2019-09-20 13:31:47,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:31:47,549 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2019-09-20 13:31:47,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:47,556 INFO L225 Difference]: With dead ends: 1112 [2019-09-20 13:31:47,556 INFO L226 Difference]: Without dead ends: 1112 [2019-09-20 13:31:47,557 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 13:31:47,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2019-09-20 13:31:47,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1095. [2019-09-20 13:31:47,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2019-09-20 13:31:47,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1344 transitions. [2019-09-20 13:31:47,608 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1344 transitions. Word has length 98 [2019-09-20 13:31:47,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:47,609 INFO L475 AbstractCegarLoop]: Abstraction has 1095 states and 1344 transitions. [2019-09-20 13:31:47,609 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:31:47,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1344 transitions. [2019-09-20 13:31:47,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-20 13:31:47,612 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:47,612 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, 1] [2019-09-20 13:31:47,613 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:47,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:47,613 INFO L82 PathProgramCache]: Analyzing trace with hash 884836017, now seen corresponding path program 1 times [2019-09-20 13:31:47,613 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:47,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:47,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:47,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:47,616 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:47,834 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 13:31:47,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:47,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:31:47,835 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:47,836 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:31:47,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:31:47,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:31:47,837 INFO L87 Difference]: Start difference. First operand 1095 states and 1344 transitions. Second operand 9 states. [2019-09-20 13:31:49,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:49,193 INFO L93 Difference]: Finished difference Result 2111 states and 2589 transitions. [2019-09-20 13:31:49,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:31:49,194 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2019-09-20 13:31:49,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:49,208 INFO L225 Difference]: With dead ends: 2111 [2019-09-20 13:31:49,208 INFO L226 Difference]: Without dead ends: 2111 [2019-09-20 13:31:49,209 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:31:49,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2111 states. [2019-09-20 13:31:49,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2111 to 1872. [2019-09-20 13:31:49,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1872 states. [2019-09-20 13:31:49,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 2259 transitions. [2019-09-20 13:31:49,300 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 2259 transitions. Word has length 102 [2019-09-20 13:31:49,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:49,300 INFO L475 AbstractCegarLoop]: Abstraction has 1872 states and 2259 transitions. [2019-09-20 13:31:49,301 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:31:49,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 2259 transitions. [2019-09-20 13:31:49,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-09-20 13:31:49,306 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:49,306 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, 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 13:31:49,306 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:49,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:49,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1627137653, now seen corresponding path program 1 times [2019-09-20 13:31:49,307 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:49,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:49,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:49,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:49,310 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:49,512 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-20 13:31:49,513 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:31:49,513 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:31:49,514 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 181 with the following transitions: [2019-09-20 13:31:49,516 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [92], [94], [97], [101], [102], [103], [119], [123], [124], [125], [128], [130], [136], [140], [143], [144], [145], [154], [158], [162], [165], [168], [170], [176], [178], [184], [190], [198], [199], [209], [210], [211], [212], [213], [215], [220], [222], [223], [224], [225], [229], [232], [236], [242], [271], [275], [278], [281], [283], [286], [293], [296], [299], [303], [304], [307], [310], [312], [318], [322], [325], [326], [327], [328], [330], [331], [332], [334], [337], [339], [342], [345], [354], [356], [357], [358], [382], [384], [385], [452], [453], [463], [471], [472], [473], [474], [475], [476], [477], [478], [479], [513], [514], [515], [516], [519], [520], [521], [522], [523], [524], [531], [532], [535], [536], [537], [538], [539], [540], [541], [542], [543], [544], [549], [550], [551], [552], [555], [556], [557], [558], [561], [562], [563], [564], [565], [566], [567], [568], [569], [570], [571], [575], [576], [577], [579], [580], [585], [586], [587] [2019-09-20 13:31:49,575 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:31:49,576 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:31:49,674 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:31:49,676 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 13:31:49,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:49,683 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:31:49,789 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:31:49,789 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:31:49,794 INFO L420 sIntCurrentIteration]: We unified 179 AI predicates to 179 [2019-09-20 13:31:49,794 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:31:49,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:31:49,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-20 13:31:49,796 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:49,797 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:49,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:49,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:49,798 INFO L87 Difference]: Start difference. First operand 1872 states and 2259 transitions. Second operand 2 states. [2019-09-20 13:31:49,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:49,799 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:31:49,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:49,799 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 180 [2019-09-20 13:31:49,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:49,799 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:31:49,800 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:31:49,800 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 179 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 13:31:49,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:31:49,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:31:49,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:31:49,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:31:49,802 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 180 [2019-09-20 13:31:49,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:49,802 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:31:49,802 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:49,802 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:31:49,803 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:31:49,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:31:49 BoogieIcfgContainer [2019-09-20 13:31:49,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:31:49,813 INFO L168 Benchmark]: Toolchain (without parser) took 8079.49 ms. Allocated memory was 131.1 MB in the beginning and 347.6 MB in the end (delta: 216.5 MB). Free memory was 85.5 MB in the beginning and 234.1 MB in the end (delta: -148.6 MB). Peak memory consumption was 68.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:49,814 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 131.1 MB. Free memory was 105.4 MB in the beginning and 105.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:31:49,815 INFO L168 Benchmark]: CACSL2BoogieTranslator took 744.99 ms. Allocated memory was 131.1 MB in the beginning and 199.2 MB in the end (delta: 68.2 MB). Free memory was 85.3 MB in the beginning and 163.0 MB in the end (delta: -77.8 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:49,816 INFO L168 Benchmark]: Boogie Preprocessor took 90.28 ms. Allocated memory is still 199.2 MB. Free memory was 163.0 MB in the beginning and 159.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:49,817 INFO L168 Benchmark]: RCFGBuilder took 1167.52 ms. Allocated memory was 199.2 MB in the beginning and 219.7 MB in the end (delta: 20.4 MB). Free memory was 159.0 MB in the beginning and 185.8 MB in the end (delta: -26.7 MB). Peak memory consumption was 93.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:49,818 INFO L168 Benchmark]: TraceAbstraction took 6068.91 ms. Allocated memory was 219.7 MB in the beginning and 347.6 MB in the end (delta: 127.9 MB). Free memory was 185.8 MB in the beginning and 234.1 MB in the end (delta: -48.3 MB). Peak memory consumption was 79.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:49,823 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 131.1 MB. Free memory was 105.4 MB in the beginning and 105.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 744.99 ms. Allocated memory was 131.1 MB in the beginning and 199.2 MB in the end (delta: 68.2 MB). Free memory was 85.3 MB in the beginning and 163.0 MB in the end (delta: -77.8 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.28 ms. Allocated memory is still 199.2 MB. Free memory was 163.0 MB in the beginning and 159.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1167.52 ms. Allocated memory was 199.2 MB in the beginning and 219.7 MB in the end (delta: 20.4 MB). Free memory was 159.0 MB in the beginning and 185.8 MB in the end (delta: -26.7 MB). Peak memory consumption was 93.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6068.91 ms. Allocated memory was 219.7 MB in the beginning and 347.6 MB in the end (delta: 127.9 MB). Free memory was 185.8 MB in the beginning and 234.1 MB in the end (delta: -48.3 MB). Peak memory consumption was 79.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 521]: 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 45 procedures, 265 locations, 1 error locations. SAFE Result, 5.9s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 3.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1714 SDtfs, 1305 SDslu, 3842 SDs, 0 SdLazy, 1951 SolverSat, 379 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 268 GetRequests, 217 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1872occurred 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, 0.8044692737430168 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 328 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 830 NumberOfCodeBlocks, 830 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 821 ConstructedInterpolants, 0 QuantifiedInterpolants, 139017 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 62/71 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...