/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain EqDomain -i ../sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:06:39,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:06:39,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:06:39,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:06:39,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:06:39,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:06:39,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:06:39,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:06:39,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:06:39,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:06:39,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:06:39,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:06:39,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:06:39,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:06:39,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:06:39,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:06:39,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:06:39,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:06:39,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:06:39,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:06:39,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:06:39,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:06:39,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:06:39,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:06:39,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:06:39,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:06:39,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:06:39,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:06:39,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:06:39,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:06:39,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:06:39,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:06:39,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:06:39,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:06:39,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:06:39,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:06:39,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:06:39,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:06:39,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:06:39,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:06:39,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:06:39,864 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 12:06:39,915 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:06:39,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:06:39,916 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:06:39,916 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:06:39,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:06:39,917 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:06:39,917 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:06:39,917 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:06:39,918 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:06:39,918 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:06:39,918 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:06:39,919 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:06:39,919 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:06:39,919 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:06:39,919 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:06:39,919 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:06:39,919 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:06:39,919 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:06:39,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:06:39,920 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:06:39,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:06:39,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:06:39,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:06:39,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:06:39,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:06:39,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:06:39,921 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:06:39,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:06:39,921 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:06:39,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:06:39,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:06:39,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:06:39,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:06:39,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:06:39,922 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:06:39,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:06:39,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:06:39,923 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:06:39,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:06:39,923 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:06:39,923 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:06:39,923 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:06:40,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:06:40,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:06:40,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:06:40,381 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:06:40,381 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:06:40,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c [2023-04-01 12:06:42,200 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:06:42,614 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:06:42,614 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c [2023-04-01 12:06:42,646 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/348d16324/dd9e3e0337d9424597223bbf4fd1945f/FLAG69be58593 [2023-04-01 12:06:42,680 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/348d16324/dd9e3e0337d9424597223bbf4fd1945f [2023-04-01 12:06:42,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:06:42,684 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:06:42,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:06:42,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:06:42,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:06:42,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:06:42" (1/1) ... [2023-04-01 12:06:42,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e1166e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:06:42, skipping insertion in model container [2023-04-01 12:06:42,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:06:42" (1/1) ... [2023-04-01 12:06:42,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:06:42,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:06:43,223 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c[11718,11731] [2023-04-01 12:06:43,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:06:43,331 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:06:43,407 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c[11718,11731] [2023-04-01 12:06:43,424 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:06:43,442 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:06:43,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:06:43 WrapperNode [2023-04-01 12:06:43,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:06:43,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:06:43,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:06:43,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:06:43,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:06:43" (1/1) ... [2023-04-01 12:06:43,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:06:43" (1/1) ... [2023-04-01 12:06:43,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:06:43" (1/1) ... [2023-04-01 12:06:43,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:06:43" (1/1) ... [2023-04-01 12:06:43,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:06:43" (1/1) ... [2023-04-01 12:06:43,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:06:43" (1/1) ... [2023-04-01 12:06:43,516 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:06:43" (1/1) ... [2023-04-01 12:06:43,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:06:43" (1/1) ... [2023-04-01 12:06:43,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:06:43,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:06:43,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:06:43,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:06:43,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:06:43" (1/1) ... [2023-04-01 12:06:43,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:06:43,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:06:43,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 12:06:43,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 12:06:43,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:06:43,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:06:43,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 12:06:43,694 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:06:43,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2023-04-01 12:06:43,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 12:06:43,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 12:06:43,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 12:06:43,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 12:06:43,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 12:06:43,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 12:06:43,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 12:06:43,695 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 12:06:43,695 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 12:06:43,695 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 12:06:43,695 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 12:06:43,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:06:43,695 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 12:06:43,695 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-01 12:06:43,696 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2023-04-01 12:06:43,696 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 12:06:43,696 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2023-04-01 12:06:43,696 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 12:06:43,696 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 12:06:43,696 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 12:06:43,696 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 12:06:43,696 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 12:06:43,696 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-01 12:06:43,697 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-04-01 12:06:43,697 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-04-01 12:06:43,697 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 12:06:43,697 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 12:06:43,697 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 12:06:43,697 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 12:06:43,697 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 12:06:43,698 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 12:06:43,698 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-01 12:06:43,698 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 12:06:43,698 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 12:06:43,698 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 12:06:43,698 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 12:06:43,698 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 12:06:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:06:43,699 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:06:43,700 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:06:43,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:06:43,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 12:06:43,701 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 12:06:43,701 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 12:06:43,701 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 12:06:43,701 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 12:06:43,702 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2023-04-01 12:06:43,702 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 12:06:43,702 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 12:06:43,702 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 12:06:43,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 12:06:43,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 12:06:43,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:06:43,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 12:06:43,703 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 12:06:43,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:06:43,703 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 12:06:43,704 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 12:06:43,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:06:43,704 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 12:06:43,704 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 12:06:43,704 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 12:06:43,704 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 12:06:43,704 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 12:06:43,704 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 12:06:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 12:06:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 12:06:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 12:06:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 12:06:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 12:06:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 12:06:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 12:06:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 12:06:43,706 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 12:06:43,706 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:06:43,706 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 12:06:43,706 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 12:06:43,707 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 12:06:43,708 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-01 12:06:43,708 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 12:06:43,708 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 12:06:43,708 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-04-01 12:06:43,709 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-04-01 12:06:43,709 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 12:06:43,709 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-01 12:06:43,709 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-01 12:06:43,709 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2023-04-01 12:06:43,709 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 12:06:43,709 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2023-04-01 12:06:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 12:06:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:06:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:06:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:06:43,851 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:06:43,853 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:06:44,606 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:06:44,746 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:06:44,746 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 12:06:44,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:06:44 BoogieIcfgContainer [2023-04-01 12:06:44,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:06:44,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:06:44,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:06:44,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:06:44,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:06:42" (1/3) ... [2023-04-01 12:06:44,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39605ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:06:44, skipping insertion in model container [2023-04-01 12:06:44,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:06:43" (2/3) ... [2023-04-01 12:06:44,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39605ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:06:44, skipping insertion in model container [2023-04-01 12:06:44,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:06:44" (3/3) ... [2023-04-01 12:06:44,768 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product48.cil.c [2023-04-01 12:06:44,798 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:06:44,799 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:06:44,894 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:06:44,910 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c1f04ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:06:44,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:06:44,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 156 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 88 states have internal predecessors, (92), 50 states have call successors, (50), 31 states have call predecessors, (50), 31 states have return successors, (50), 45 states have call predecessors, (50), 50 states have call successors, (50) [2023-04-01 12:06:44,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-01 12:06:44,929 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:06:44,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:06:44,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:06:44,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:06:44,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1530436991, now seen corresponding path program 1 times [2023-04-01 12:06:44,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:06:44,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371700813] [2023-04-01 12:06:44,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:06:44,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:06:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:06:45,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:06:45,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:06:45,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371700813] [2023-04-01 12:06:45,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371700813] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:06:45,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:06:45,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 12:06:45,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003125796] [2023-04-01 12:06:45,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:06:45,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 12:06:45,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:06:45,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 12:06:45,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 12:06:45,434 INFO L87 Difference]: Start difference. First operand has 156 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 88 states have internal predecessors, (92), 50 states have call successors, (50), 31 states have call predecessors, (50), 31 states have return successors, (50), 45 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 12:06:45,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:06:45,553 INFO L93 Difference]: Finished difference Result 245 states and 298 transitions. [2023-04-01 12:06:45,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 12:06:45,556 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2023-04-01 12:06:45,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:06:45,566 INFO L225 Difference]: With dead ends: 245 [2023-04-01 12:06:45,566 INFO L226 Difference]: Without dead ends: 123 [2023-04-01 12:06:45,569 INFO L412 NwaCegarLoop]: 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 [2023-04-01 12:06:45,571 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:06:45,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:06:45,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-04-01 12:06:45,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2023-04-01 12:06:45,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 76 states have internal predecessors, (78), 35 states have call successors, (35), 29 states have call predecessors, (35), 24 states have return successors, (30), 25 states have call predecessors, (30), 30 states have call successors, (30) [2023-04-01 12:06:45,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2023-04-01 12:06:45,690 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 42 [2023-04-01 12:06:45,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:06:45,694 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2023-04-01 12:06:45,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 12:06:45,696 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2023-04-01 12:06:45,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-04-01 12:06:45,700 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:06:45,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:06:45,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:06:45,701 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:06:45,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:06:45,713 INFO L85 PathProgramCache]: Analyzing trace with hash 557277754, now seen corresponding path program 1 times [2023-04-01 12:06:45,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:06:45,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338775943] [2023-04-01 12:06:45,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:06:45,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:06:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:06:45,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:06:45,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:06:45,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338775943] [2023-04-01 12:06:45,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338775943] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:06:45,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:06:45,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:06:45,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392341359] [2023-04-01 12:06:45,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:06:45,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:06:45,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:06:45,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:06:45,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:06:45,932 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 12:06:46,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:06:46,015 INFO L93 Difference]: Finished difference Result 193 states and 223 transitions. [2023-04-01 12:06:46,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:06:46,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2023-04-01 12:06:46,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:06:46,018 INFO L225 Difference]: With dead ends: 193 [2023-04-01 12:06:46,019 INFO L226 Difference]: Without dead ends: 115 [2023-04-01 12:06:46,023 INFO L412 NwaCegarLoop]: 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 [2023-04-01 12:06:46,024 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 11 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:06:46,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 215 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:06:46,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-04-01 12:06:46,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-04-01 12:06:46,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 71 states have internal predecessors, (72), 32 states have call successors, (32), 28 states have call predecessors, (32), 24 states have return successors, (28), 23 states have call predecessors, (28), 28 states have call successors, (28) [2023-04-01 12:06:46,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 132 transitions. [2023-04-01 12:06:46,056 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 132 transitions. Word has length 43 [2023-04-01 12:06:46,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:06:46,057 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 132 transitions. [2023-04-01 12:06:46,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 12:06:46,057 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 132 transitions. [2023-04-01 12:06:46,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-04-01 12:06:46,062 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:06:46,062 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:06:46,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:06:46,062 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:06:46,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:06:46,063 INFO L85 PathProgramCache]: Analyzing trace with hash 685368033, now seen corresponding path program 1 times [2023-04-01 12:06:46,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:06:46,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006107253] [2023-04-01 12:06:46,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:06:46,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:06:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:06:46,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:06:46,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:06:46,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006107253] [2023-04-01 12:06:46,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006107253] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:06:46,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:06:46,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:06:46,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601126396] [2023-04-01 12:06:46,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:06:46,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:06:46,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:06:46,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:06:46,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:06:46,489 INFO L87 Difference]: Start difference. First operand 115 states and 132 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 12:06:46,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:06:46,947 INFO L93 Difference]: Finished difference Result 346 states and 412 transitions. [2023-04-01 12:06:46,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:06:46,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 47 [2023-04-01 12:06:46,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:06:46,955 INFO L225 Difference]: With dead ends: 346 [2023-04-01 12:06:46,955 INFO L226 Difference]: Without dead ends: 253 [2023-04-01 12:06:46,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-01 12:06:46,960 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 214 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:06:46,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 543 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:06:46,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-04-01 12:06:47,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 241. [2023-04-01 12:06:47,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 128 states have (on average 1.2734375) internal successors, (163), 153 states have internal predecessors, (163), 63 states have call successors, (63), 55 states have call predecessors, (63), 49 states have return successors, (60), 47 states have call predecessors, (60), 59 states have call successors, (60) [2023-04-01 12:06:47,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 286 transitions. [2023-04-01 12:06:47,044 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 286 transitions. Word has length 47 [2023-04-01 12:06:47,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:06:47,044 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 286 transitions. [2023-04-01 12:06:47,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 12:06:47,044 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 286 transitions. [2023-04-01 12:06:47,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-01 12:06:47,087 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:06:47,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:06:47,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:06:47,088 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:06:47,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:06:47,088 INFO L85 PathProgramCache]: Analyzing trace with hash 362300439, now seen corresponding path program 1 times [2023-04-01 12:06:47,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:06:47,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060845784] [2023-04-01 12:06:47,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:06:47,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:06:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:06:47,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:06:47,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:06:47,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060845784] [2023-04-01 12:06:47,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060845784] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:06:47,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:06:47,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-01 12:06:47,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330929137] [2023-04-01 12:06:47,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:06:47,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 12:06:47,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:06:47,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 12:06:47,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-01 12:06:47,479 INFO L87 Difference]: Start difference. First operand 241 states and 286 transitions. Second operand has 10 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 12:06:48,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:06:48,071 INFO L93 Difference]: Finished difference Result 859 states and 1066 transitions. [2023-04-01 12:06:48,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:06:48,071 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 51 [2023-04-01 12:06:48,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:06:48,078 INFO L225 Difference]: With dead ends: 859 [2023-04-01 12:06:48,078 INFO L226 Difference]: Without dead ends: 640 [2023-04-01 12:06:48,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-04-01 12:06:48,085 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 193 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 12:06:48,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 829 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 12:06:48,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2023-04-01 12:06:48,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 616. [2023-04-01 12:06:48,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 337 states have (on average 1.2759643916913948) internal successors, (430), 401 states have internal predecessors, (430), 156 states have call successors, (156), 132 states have call predecessors, (156), 122 states have return successors, (163), 116 states have call predecessors, (163), 152 states have call successors, (163) [2023-04-01 12:06:48,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 749 transitions. [2023-04-01 12:06:48,212 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 749 transitions. Word has length 51 [2023-04-01 12:06:48,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:06:48,213 INFO L495 AbstractCegarLoop]: Abstraction has 616 states and 749 transitions. [2023-04-01 12:06:48,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 12:06:48,214 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 749 transitions. [2023-04-01 12:06:48,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-01 12:06:48,216 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:06:48,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:06:48,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:06:48,216 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:06:48,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:06:48,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1820428302, now seen corresponding path program 1 times [2023-04-01 12:06:48,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:06:48,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071696574] [2023-04-01 12:06:48,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:06:48,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:06:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:06:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:06:48,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:06:48,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071696574] [2023-04-01 12:06:48,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071696574] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:06:48,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:06:48,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:06:48,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971054695] [2023-04-01 12:06:48,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:06:48,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:06:48,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:06:48,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:06:48,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:06:48,325 INFO L87 Difference]: Start difference. First operand 616 states and 749 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-01 12:06:48,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:06:48,413 INFO L93 Difference]: Finished difference Result 1428 states and 1791 transitions. [2023-04-01 12:06:48,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:06:48,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 54 [2023-04-01 12:06:48,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:06:48,419 INFO L225 Difference]: With dead ends: 1428 [2023-04-01 12:06:48,419 INFO L226 Difference]: Without dead ends: 834 [2023-04-01 12:06:48,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:06:48,422 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 108 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:06:48,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 179 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:06:48,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2023-04-01 12:06:48,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 809. [2023-04-01 12:06:48,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 466 states have (on average 1.2167381974248928) internal successors, (567), 515 states have internal predecessors, (567), 169 states have call successors, (169), 167 states have call predecessors, (169), 173 states have return successors, (213), 164 states have call predecessors, (213), 165 states have call successors, (213) [2023-04-01 12:06:48,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 949 transitions. [2023-04-01 12:06:48,581 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 949 transitions. Word has length 54 [2023-04-01 12:06:48,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:06:48,582 INFO L495 AbstractCegarLoop]: Abstraction has 809 states and 949 transitions. [2023-04-01 12:06:48,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-01 12:06:48,582 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 949 transitions. [2023-04-01 12:06:48,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-01 12:06:48,586 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:06:48,586 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 12:06:48,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:06:48,586 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:06:48,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:06:48,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1234577825, now seen corresponding path program 1 times [2023-04-01 12:06:48,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:06:48,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760356099] [2023-04-01 12:06:48,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:06:48,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:06:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:06:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 12:06:48,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:06:48,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760356099] [2023-04-01 12:06:48,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760356099] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:06:48,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649630559] [2023-04-01 12:06:48,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:06:48,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:06:48,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:06:48,885 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 12:06:48,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 12:06:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:06:49,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-01 12:06:49,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:06:49,425 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 12:06:49,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:06:50,403 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 12:06:50,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649630559] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:06:50,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [444325283] [2023-04-01 12:06:50,500 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2023-04-01 12:06:50,501 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:06:50,504 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:06:50,508 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:06:50,509 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:06:51,594 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-01 12:06:51,673 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 127 for LOIs [2023-04-01 12:06:54,226 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 127 for LOIs [2023-04-01 12:06:54,313 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 119 for LOIs [2023-04-01 12:06:54,336 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 119 for LOIs [2023-04-01 12:06:54,358 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 127 for LOIs [2023-04-01 12:07:01,880 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-04-01 12:07:02,813 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-04-01 12:07:02,987 INFO L197 IcfgInterpreter]: Interpreting procedure stopSystem with input of size 168 for LOIs [2023-04-01 12:07:03,056 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 127 for LOIs [2023-04-01 12:07:03,128 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 159 for LOIs [2023-04-01 12:07:03,377 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 117 for LOIs [2023-04-01 12:07:03,834 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 119 for LOIs [2023-04-01 12:07:03,864 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 117 for LOIs [2023-04-01 12:07:03,881 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 119 for LOIs [2023-04-01 12:07:03,902 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 119 for LOIs [2023-04-01 12:07:03,918 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 12:07:16,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [444325283] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:07:16,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-01 12:07:16,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [7, 14, 12] total 63 [2023-04-01 12:07:16,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746164197] [2023-04-01 12:07:16,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:07:16,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-04-01 12:07:16,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:07:16,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-04-01 12:07:16,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=3503, Unknown=0, NotChecked=0, Total=3906 [2023-04-01 12:07:16,620 INFO L87 Difference]: Start difference. First operand 809 states and 949 transitions. Second operand has 37 states, 25 states have (on average 1.36) internal successors, (34), 29 states have internal predecessors, (34), 11 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2023-04-01 12:07:49,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:07:49,261 INFO L93 Difference]: Finished difference Result 2202 states and 2685 transitions. [2023-04-01 12:07:49,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-04-01 12:07:49,262 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 25 states have (on average 1.36) internal successors, (34), 29 states have internal predecessors, (34), 11 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) Word has length 79 [2023-04-01 12:07:49,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:07:49,305 INFO L225 Difference]: With dead ends: 2202 [2023-04-01 12:07:49,306 INFO L226 Difference]: Without dead ends: 1415 [2023-04-01 12:07:49,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3647 ImplicationChecksByTransitivity, 37.0s TimeCoverageRelationStatistics Valid=1561, Invalid=11095, Unknown=0, NotChecked=0, Total=12656 [2023-04-01 12:07:49,315 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 704 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 6053 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 6598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 6053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:07:49,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 737 Invalid, 6598 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [545 Valid, 6053 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-04-01 12:07:49,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2023-04-01 12:07:49,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1253. [2023-04-01 12:07:49,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 737 states have (on average 1.2062415196743554) internal successors, (889), 805 states have internal predecessors, (889), 255 states have call successors, (255), 246 states have call predecessors, (255), 260 states have return successors, (327), 249 states have call predecessors, (327), 251 states have call successors, (327) [2023-04-01 12:07:49,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1471 transitions. [2023-04-01 12:07:49,760 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1471 transitions. Word has length 79 [2023-04-01 12:07:49,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:07:49,762 INFO L495 AbstractCegarLoop]: Abstraction has 1253 states and 1471 transitions. [2023-04-01 12:07:49,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 25 states have (on average 1.36) internal successors, (34), 29 states have internal predecessors, (34), 11 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2023-04-01 12:07:49,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1471 transitions. [2023-04-01 12:07:49,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-01 12:07:49,770 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:07:49,770 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 12:07:49,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 12:07:49,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 12:07:49,980 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:07:49,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:07:49,980 INFO L85 PathProgramCache]: Analyzing trace with hash 898968119, now seen corresponding path program 1 times [2023-04-01 12:07:49,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:07:49,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417773497] [2023-04-01 12:07:49,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:07:49,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:07:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:07:50,280 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 12:07:50,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:07:50,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417773497] [2023-04-01 12:07:50,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417773497] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:07:50,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697002871] [2023-04-01 12:07:50,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:07:50,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:07:50,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:07:50,285 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 12:07:50,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 12:07:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:07:50,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-01 12:07:50,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:07:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 12:07:50,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:07:51,448 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 12:07:51,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697002871] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:07:51,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [781298983] [2023-04-01 12:07:51,450 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2023-04-01 12:07:51,450 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:07:51,451 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:07:51,451 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:07:51,451 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:07:51,860 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-01 12:07:51,910 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 127 for LOIs [2023-04-01 12:07:53,593 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 127 for LOIs [2023-04-01 12:07:53,657 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 119 for LOIs [2023-04-01 12:07:53,675 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 119 for LOIs [2023-04-01 12:07:53,692 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 127 for LOIs