/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_spec5_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:10:37,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:10:37,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:10:37,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:10:37,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:10:37,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:10:37,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:10:37,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:10:37,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:10:37,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:10:37,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:10:37,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:10:37,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:10:37,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:10:37,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:10:37,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:10:37,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:10:37,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:10:37,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:10:37,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:10:37,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:10:37,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:10:37,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:10:37,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:10:37,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:10:37,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:10:37,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:10:37,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:10:37,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:10:37,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:10:37,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:10:37,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:10:37,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:10:37,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:10:37,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:10:37,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:10:37,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:10:37,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:10:37,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:10:37,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:10:37,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:10:37,546 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 12:10:37,572 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:10:37,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:10:37,572 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:10:37,573 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:10:37,573 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:10:37,573 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:10:37,574 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:10:37,574 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:10:37,574 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:10:37,574 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:10:37,575 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:10:37,575 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:10:37,575 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:10:37,575 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:10:37,575 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:10:37,575 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:10:37,575 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:10:37,575 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:10:37,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:10:37,576 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:10:37,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:10:37,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:10:37,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:10:37,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:10:37,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:10:37,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:10:37,577 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:10:37,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:10:37,578 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:10:37,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:10:37,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:10:37,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:10:37,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:10:37,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:10:37,578 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:10:37,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:10:37,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:10:37,579 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:10:37,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:10:37,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:10:37,579 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:10:37,579 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:10:37,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:10:37,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:10:37,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:10:37,866 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:10:37,867 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:10:37,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product61.cil.c [2023-04-01 12:10:39,013 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:10:39,274 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:10:39,275 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product61.cil.c [2023-04-01 12:10:39,290 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f9cb72ca/7b5bb46287d143459cd5b2adc0877b37/FLAGfa55d9d21 [2023-04-01 12:10:39,308 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f9cb72ca/7b5bb46287d143459cd5b2adc0877b37 [2023-04-01 12:10:39,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:10:39,312 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:10:39,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:10:39,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:10:39,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:10:39,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:10:39" (1/1) ... [2023-04-01 12:10:39,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@210a2722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:10:39, skipping insertion in model container [2023-04-01 12:10:39,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:10:39" (1/1) ... [2023-04-01 12:10:39,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:10:39,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:10:39,624 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_spec5_product61.cil.c[18376,18389] [2023-04-01 12:10:39,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:10:39,641 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:10:39,696 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_spec5_product61.cil.c[18376,18389] [2023-04-01 12:10:39,699 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:10:39,715 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:10:39,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:10:39 WrapperNode [2023-04-01 12:10:39,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:10:39,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:10:39,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:10:39,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:10:39,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:10:39" (1/1) ... [2023-04-01 12:10:39,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:10:39" (1/1) ... [2023-04-01 12:10:39,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:10:39" (1/1) ... [2023-04-01 12:10:39,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:10:39" (1/1) ... [2023-04-01 12:10:39,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:10:39" (1/1) ... [2023-04-01 12:10:39,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:10:39" (1/1) ... [2023-04-01 12:10:39,779 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:10:39" (1/1) ... [2023-04-01 12:10:39,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:10:39" (1/1) ... [2023-04-01 12:10:39,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:10:39,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:10:39,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:10:39,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:10:39,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:10:39" (1/1) ... [2023-04-01 12:10:39,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:10:39,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:10:39,818 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 12:10:39,822 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 12:10:39,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:10:39,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:10:39,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 12:10:39,850 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:10:39,850 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 12:10:39,850 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 12:10:39,850 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-01 12:10:39,850 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 12:10:39,851 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2023-04-01 12:10:39,851 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 12:10:39,851 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2023-04-01 12:10:39,851 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 12:10:39,851 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 12:10:39,851 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 12:10:39,851 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 12:10:39,851 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 12:10:39,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-01 12:10:39,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-04-01 12:10:39,852 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 12:10:39,852 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 12:10:39,852 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 12:10:39,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 12:10:39,852 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 12:10:39,853 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 12:10:39,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-01 12:10:39,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-04-01 12:10:39,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 12:10:39,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 12:10:39,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 12:10:39,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 12:10:39,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 12:10:39,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 12:10:39,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2023-04-01 12:10:39,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2023-04-01 12:10:39,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2023-04-01 12:10:39,854 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 12:10:39,854 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 12:10:39,854 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 12:10:39,855 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 12:10:39,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 12:10:39,855 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 12:10:39,855 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 12:10:39,855 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 12:10:39,855 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 12:10:39,855 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:10:39,855 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:10:39,856 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:10:39,856 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:10:39,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:10:39,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 12:10:39,856 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 12:10:39,856 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 12:10:39,856 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 12:10:39,857 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 12:10:39,857 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 12:10:39,857 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 12:10:39,857 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 12:10:39,857 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 12:10:39,857 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 12:10:39,857 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-01 12:10:39,858 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-04-01 12:10:39,858 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 12:10:39,858 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 12:10:39,858 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 12:10:39,858 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 12:10:39,858 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2023-04-01 12:10:39,858 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2023-04-01 12:10:39,858 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 12:10:39,859 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-01 12:10:39,859 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-01 12:10:39,859 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 12:10:39,859 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-04-01 12:10:39,859 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2023-04-01 12:10:39,859 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 12:10:39,859 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2023-04-01 12:10:39,860 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 12:10:39,860 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 12:10:39,860 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 12:10:39,860 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 12:10:39,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 12:10:39,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 12:10:39,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:10:39,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 12:10:39,861 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 12:10:39,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:10:39,861 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 12:10:39,861 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 12:10:39,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:10:39,861 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 12:10:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 12:10:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 12:10:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 12:10:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2023-04-01 12:10:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 12:10:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 12:10:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 12:10:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 12:10:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 12:10:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 12:10:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 12:10:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:10:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:10:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:10:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:10:40,011 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:10:40,013 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:10:40,564 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:10:40,730 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:10:40,730 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 12:10:40,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:10:40 BoogieIcfgContainer [2023-04-01 12:10:40,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:10:40,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:10:40,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:10:40,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:10:40,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:10:39" (1/3) ... [2023-04-01 12:10:40,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65aa7f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:10:40, skipping insertion in model container [2023-04-01 12:10:40,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:10:39" (2/3) ... [2023-04-01 12:10:40,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65aa7f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:10:40, skipping insertion in model container [2023-04-01 12:10:40,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:10:40" (3/3) ... [2023-04-01 12:10:40,744 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product61.cil.c [2023-04-01 12:10:40,760 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:10:40,761 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:10:40,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:10:40,831 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;@20ab47a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:10:40,834 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:10:40,838 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 93 states have internal predecessors, (98), 55 states have call successors, (55), 34 states have call predecessors, (55), 34 states have return successors, (55), 49 states have call predecessors, (55), 55 states have call successors, (55) [2023-04-01 12:10:40,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-04-01 12:10:40,847 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:10:40,848 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 12:10:40,848 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:10:40,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:10:40,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1079970706, now seen corresponding path program 1 times [2023-04-01 12:10:40,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:10:40,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697783772] [2023-04-01 12:10:40,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:10:40,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:10:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:10:41,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:10:41,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:10:41,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697783772] [2023-04-01 12:10:41,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697783772] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:10:41,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:10:41,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 12:10:41,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014068391] [2023-04-01 12:10:41,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:10:41,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 12:10:41,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:10:41,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 12:10:41,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 12:10:41,155 INFO L87 Difference]: Start difference. First operand has 170 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 93 states have internal predecessors, (98), 55 states have call successors, (55), 34 states have call predecessors, (55), 34 states have return successors, (55), 49 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 12:10:41,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:10:41,281 INFO L93 Difference]: Finished difference Result 270 states and 327 transitions. [2023-04-01 12:10:41,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 12:10:41,284 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 52 [2023-04-01 12:10:41,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:10:41,295 INFO L225 Difference]: With dead ends: 270 [2023-04-01 12:10:41,295 INFO L226 Difference]: Without dead ends: 137 [2023-04-01 12:10:41,301 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 12:10:41,307 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:10:41,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 149 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:10:41,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-04-01 12:10:41,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-04-01 12:10:41,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 81 states have internal predecessors, (84), 40 states have call successors, (40), 32 states have call predecessors, (40), 27 states have return successors, (35), 29 states have call predecessors, (35), 35 states have call successors, (35) [2023-04-01 12:10:41,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2023-04-01 12:10:41,372 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 52 [2023-04-01 12:10:41,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:10:41,373 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2023-04-01 12:10:41,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 12:10:41,373 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2023-04-01 12:10:41,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-01 12:10:41,376 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:10:41,376 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 12:10:41,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:10:41,376 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:10:41,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:10:41,377 INFO L85 PathProgramCache]: Analyzing trace with hash 207016007, now seen corresponding path program 1 times [2023-04-01 12:10:41,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:10:41,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579822355] [2023-04-01 12:10:41,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:10:41,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:10:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:10:41,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:10:41,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:10:41,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579822355] [2023-04-01 12:10:41,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579822355] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:10:41,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:10:41,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:10:41,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499056061] [2023-04-01 12:10:41,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:10:41,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:10:41,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:10:41,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:10:41,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:10:41,515 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 12:10:41,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:10:41,579 INFO L93 Difference]: Finished difference Result 228 states and 266 transitions. [2023-04-01 12:10:41,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:10:41,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 53 [2023-04-01 12:10:41,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:10:41,609 INFO L225 Difference]: With dead ends: 228 [2023-04-01 12:10:41,610 INFO L226 Difference]: Without dead ends: 129 [2023-04-01 12:10:41,610 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 12:10:41,612 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 7 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:10:41,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 248 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:10:41,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-04-01 12:10:41,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-04-01 12:10:41,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 64 states have (on average 1.21875) internal successors, (78), 76 states have internal predecessors, (78), 37 states have call successors, (37), 31 states have call predecessors, (37), 27 states have return successors, (33), 27 states have call predecessors, (33), 33 states have call successors, (33) [2023-04-01 12:10:41,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 148 transitions. [2023-04-01 12:10:41,635 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 148 transitions. Word has length 53 [2023-04-01 12:10:41,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:10:41,635 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 148 transitions. [2023-04-01 12:10:41,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 12:10:41,636 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 148 transitions. [2023-04-01 12:10:41,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-04-01 12:10:41,637 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:10:41,637 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 12:10:41,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:10:41,638 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:10:41,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:10:41,638 INFO L85 PathProgramCache]: Analyzing trace with hash -235227222, now seen corresponding path program 1 times [2023-04-01 12:10:41,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:10:41,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762608353] [2023-04-01 12:10:41,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:10:41,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:10:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:10:41,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:10:41,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:10:41,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762608353] [2023-04-01 12:10:41,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762608353] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:10:41,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:10:41,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:10:41,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849261546] [2023-04-01 12:10:41,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:10:41,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:10:41,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:10:41,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:10:41,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:10:41,840 INFO L87 Difference]: Start difference. First operand 129 states and 148 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 12:10:42,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:10:42,141 INFO L93 Difference]: Finished difference Result 233 states and 272 transitions. [2023-04-01 12:10:42,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 12:10:42,141 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 55 [2023-04-01 12:10:42,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:10:42,147 INFO L225 Difference]: With dead ends: 233 [2023-04-01 12:10:42,147 INFO L226 Difference]: Without dead ends: 129 [2023-04-01 12:10:42,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 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 12:10:42,155 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 138 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:10:42,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 360 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:10:42,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-04-01 12:10:42,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-04-01 12:10:42,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 64 states have (on average 1.203125) internal successors, (77), 75 states have internal predecessors, (77), 37 states have call successors, (37), 31 states have call predecessors, (37), 27 states have return successors, (33), 27 states have call predecessors, (33), 33 states have call successors, (33) [2023-04-01 12:10:42,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 147 transitions. [2023-04-01 12:10:42,175 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 147 transitions. Word has length 55 [2023-04-01 12:10:42,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:10:42,179 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 147 transitions. [2023-04-01 12:10:42,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 12:10:42,181 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 147 transitions. [2023-04-01 12:10:42,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-01 12:10:42,191 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:10:42,191 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 12:10:42,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:10:42,192 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:10:42,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:10:42,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1131601779, now seen corresponding path program 1 times [2023-04-01 12:10:42,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:10:42,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237190735] [2023-04-01 12:10:42,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:10:42,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:10:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:10:42,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:10:42,397 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:10:42,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237190735] [2023-04-01 12:10:42,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237190735] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:10:42,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:10:42,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:10:42,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881062895] [2023-04-01 12:10:42,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:10:42,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:10:42,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:10:42,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:10:42,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:10:42,399 INFO L87 Difference]: Start difference. First operand 129 states and 147 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-01 12:10:42,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:10:42,753 INFO L93 Difference]: Finished difference Result 337 states and 398 transitions. [2023-04-01 12:10:42,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:10:42,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 72 [2023-04-01 12:10:42,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:10:42,757 INFO L225 Difference]: With dead ends: 337 [2023-04-01 12:10:42,757 INFO L226 Difference]: Without dead ends: 233 [2023-04-01 12:10:42,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-01 12:10:42,765 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 191 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:10:42,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 165 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:10:42,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-04-01 12:10:42,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 218. [2023-04-01 12:10:42,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 115 states have (on average 1.1565217391304348) internal successors, (133), 124 states have internal predecessors, (133), 51 states have call successors, (51), 47 states have call predecessors, (51), 51 states have return successors, (57), 51 states have call predecessors, (57), 47 states have call successors, (57) [2023-04-01 12:10:42,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 241 transitions. [2023-04-01 12:10:42,803 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 241 transitions. Word has length 72 [2023-04-01 12:10:42,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:10:42,803 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 241 transitions. [2023-04-01 12:10:42,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-01 12:10:42,804 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 241 transitions. [2023-04-01 12:10:42,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-01 12:10:42,806 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:10:42,806 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 12:10:42,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:10:42,806 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:10:42,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:10:42,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1521997854, now seen corresponding path program 1 times [2023-04-01 12:10:42,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:10:42,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712848822] [2023-04-01 12:10:42,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:10:42,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:10:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:10:43,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 12:10:43,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:10:43,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712848822] [2023-04-01 12:10:43,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712848822] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:10:43,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:10:43,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:10:43,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259569768] [2023-04-01 12:10:43,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:10:43,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:10:43,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:10:43,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:10:43,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:10:43,019 INFO L87 Difference]: Start difference. First operand 218 states and 241 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-04-01 12:10:43,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:10:43,433 INFO L93 Difference]: Finished difference Result 425 states and 483 transitions. [2023-04-01 12:10:43,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 12:10:43,434 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 82 [2023-04-01 12:10:43,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:10:43,438 INFO L225 Difference]: With dead ends: 425 [2023-04-01 12:10:43,438 INFO L226 Difference]: Without dead ends: 232 [2023-04-01 12:10:43,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-04-01 12:10:43,439 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 140 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:10:43,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 292 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:10:43,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-04-01 12:10:43,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 217. [2023-04-01 12:10:43,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 114 states have (on average 1.1403508771929824) internal successors, (130), 123 states have internal predecessors, (130), 51 states have call successors, (51), 47 states have call predecessors, (51), 51 states have return successors, (57), 51 states have call predecessors, (57), 47 states have call successors, (57) [2023-04-01 12:10:43,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 238 transitions. [2023-04-01 12:10:43,471 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 238 transitions. Word has length 82 [2023-04-01 12:10:43,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:10:43,472 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 238 transitions. [2023-04-01 12:10:43,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-04-01 12:10:43,472 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 238 transitions. [2023-04-01 12:10:43,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-04-01 12:10:43,473 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:10:43,474 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 12:10:43,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:10:43,474 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:10:43,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:10:43,474 INFO L85 PathProgramCache]: Analyzing trace with hash 18410938, now seen corresponding path program 1 times [2023-04-01 12:10:43,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:10:43,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104789032] [2023-04-01 12:10:43,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:10:43,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:10:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:10:43,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:10:43,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:10:43,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104789032] [2023-04-01 12:10:43,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104789032] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:10:43,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:10:43,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 12:10:43,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741333547] [2023-04-01 12:10:43,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:10:43,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 12:10:43,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:10:43,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 12:10:43,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 12:10:43,817 INFO L87 Difference]: Start difference. First operand 217 states and 238 transitions. Second operand has 12 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (19), 7 states have call predecessors, (19), 4 states have call successors, (19) [2023-04-01 12:10:44,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:10:44,329 INFO L93 Difference]: Finished difference Result 557 states and 634 transitions. [2023-04-01 12:10:44,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 12:10:44,330 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (19), 7 states have call predecessors, (19), 4 states have call successors, (19) Word has length 95 [2023-04-01 12:10:44,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:10:44,333 INFO L225 Difference]: With dead ends: 557 [2023-04-01 12:10:44,333 INFO L226 Difference]: Without dead ends: 365 [2023-04-01 12:10:44,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-04-01 12:10:44,334 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 242 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 12:10:44,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 1048 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 12:10:44,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2023-04-01 12:10:44,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 358. [2023-04-01 12:10:44,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 194 states have (on average 1.134020618556701) internal successors, (220), 207 states have internal predecessors, (220), 83 states have call successors, (83), 77 states have call predecessors, (83), 80 states have return successors, (101), 83 states have call predecessors, (101), 79 states have call successors, (101) [2023-04-01 12:10:44,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 404 transitions. [2023-04-01 12:10:44,374 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 404 transitions. Word has length 95 [2023-04-01 12:10:44,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:10:44,375 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 404 transitions. [2023-04-01 12:10:44,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (19), 7 states have call predecessors, (19), 4 states have call successors, (19) [2023-04-01 12:10:44,375 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 404 transitions. [2023-04-01 12:10:44,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-01 12:10:44,376 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:10:44,376 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 12:10:44,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 12:10:44,377 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:10:44,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:10:44,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1568561778, now seen corresponding path program 1 times [2023-04-01 12:10:44,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:10:44,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513792469] [2023-04-01 12:10:44,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:10:44,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:10:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:10:44,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:10:44,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:10:44,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513792469] [2023-04-01 12:10:44,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513792469] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:10:44,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:10:44,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:10:44,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577589516] [2023-04-01 12:10:44,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:10:44,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:10:44,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:10:44,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:10:44,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:10:44,699 INFO L87 Difference]: Start difference. First operand 358 states and 404 transitions. Second operand has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (26), 5 states have call predecessors, (26), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2023-04-01 12:10:45,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:10:45,602 INFO L93 Difference]: Finished difference Result 1114 states and 1293 transitions. [2023-04-01 12:10:45,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 12:10:45,602 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (26), 5 states have call predecessors, (26), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) Word has length 98 [2023-04-01 12:10:45,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:10:45,607 INFO L225 Difference]: With dead ends: 1114 [2023-04-01 12:10:45,607 INFO L226 Difference]: Without dead ends: 840 [2023-04-01 12:10:45,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2023-04-01 12:10:45,608 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 316 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 12:10:45,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 250 Invalid, 1373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 12:10:45,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2023-04-01 12:10:45,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 731. [2023-04-01 12:10:45,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 401 states have (on average 1.139650872817955) internal successors, (457), 426 states have internal predecessors, (457), 163 states have call successors, (163), 152 states have call predecessors, (163), 166 states have return successors, (211), 170 states have call predecessors, (211), 159 states have call successors, (211) [2023-04-01 12:10:45,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 831 transitions. [2023-04-01 12:10:45,700 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 831 transitions. Word has length 98 [2023-04-01 12:10:45,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:10:45,701 INFO L495 AbstractCegarLoop]: Abstraction has 731 states and 831 transitions. [2023-04-01 12:10:45,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (26), 5 states have call predecessors, (26), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2023-04-01 12:10:45,701 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 831 transitions. [2023-04-01 12:10:45,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-04-01 12:10:45,703 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:10:45,703 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 12:10:45,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 12:10:45,703 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:10:45,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:10:45,704 INFO L85 PathProgramCache]: Analyzing trace with hash 2136604345, now seen corresponding path program 1 times [2023-04-01 12:10:45,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:10:45,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430518606] [2023-04-01 12:10:45,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:10:45,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:10:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:10:45,929 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-01 12:10:45,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:10:45,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430518606] [2023-04-01 12:10:45,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430518606] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:10:45,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861825430] [2023-04-01 12:10:45,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:10:45,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:10:45,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:10:45,937 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 12:10:45,958 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 12:10:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:10:46,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 12:10:46,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:10:46,424 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:10:46,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:10:46,878 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-01 12:10:46,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861825430] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:10:46,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1101521241] [2023-04-01 12:10:46,936 INFO L159 IcfgInterpreter]: Started Sifa with 121 locations of interest [2023-04-01 12:10:46,937 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:10:46,941 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:10:46,946 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:10:46,946 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:10:47,547 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 12:10:47,604 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 129 for LOIs [2023-04-01 12:10:49,494 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 129 for LOIs [2023-04-01 12:10:49,916 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 129 for LOIs [2023-04-01 12:10:54,542 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 166 for LOIs [2023-04-01 12:10:54,599 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 140 for LOIs [2023-04-01 12:10:55,560 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 123 for LOIs [2023-04-01 12:10:55,582 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 120 for LOIs [2023-04-01 12:10:56,538 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 126 for LOIs [2023-04-01 12:10:57,755 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 126 for LOIs [2023-04-01 12:10:58,743 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 119 for LOIs [2023-04-01 12:10:59,036 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 119 for LOIs [2023-04-01 12:10:59,069 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 131 for LOIs [2023-04-01 12:10:59,604 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 123 for LOIs [2023-04-01 12:10:59,996 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 123 for LOIs [2023-04-01 12:11:00,052 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump__wrappee__lowWaterSensor with input of size 121 for LOIs [2023-04-01 12:11:00,072 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 122 for LOIs [2023-04-01 12:11:00,091 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterLevel with input of size 122 for LOIs [2023-04-01 12:11:00,421 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterSensorDry with input of size 122 for LOIs [2023-04-01 12:11:00,440 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 121 for LOIs [2023-04-01 12:11:00,453 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 121 for LOIs [2023-04-01 12:11:00,467 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__3 with input of size 118 for LOIs [2023-04-01 12:11:00,957 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 128 for LOIs [2023-04-01 12:11:00,971 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 118 for LOIs [2023-04-01 12:11:00,984 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__2 with input of size 134 for LOIs [2023-04-01 12:11:01,250 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 123 for LOIs [2023-04-01 12:11:01,300 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__1 with input of size 123 for LOIs [2023-04-01 12:11:01,317 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 121 for LOIs [2023-04-01 12:11:01,336 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 121 for LOIs [2023-04-01 12:11:01,351 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 12:11:22,943 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8590#(and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (= (select |#length| 9) 21) (= 30 (select |#length| 7)) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select |#valid| 15) 1) (= (select |#valid| 9) 1) (not (= ~pumpRunning~0 0)) (= (select |#length| 12) 25) (<= ~pumpRunning~0 2147483647) (= (select |#valid| 11) 1) (= ~methaneLevelCritical~0 0) (= 30 (select |#length| 4)) (not (= 2 ~waterLevel~0)) (= 31 (select |#length| 2)) (= ~head~0.offset 0) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= 30 (select |#length| 13)) (= 1 ~systemActive~0) (= 30 (select |#length| 10)) (= (select |#valid| 12) 1) (not (= |#StackHeapBarrier| 0)) (= (select |#valid| 4) 1) (= (select |#valid| 1) 1) (= (select |#length| 6) 21) (= (select |#valid| 14) 1) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (= ~head~0.base 0) (= (select |#valid| 2) 1) (<= 0 (+ ~pumpRunning~0 2147483648)) (= |#NULL.offset| 0) (= 9 (select |#length| 11)) (= (select (select |#memory_int| 1) 0) 48) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 1) 1) 0) (= ~switchedOnBeforeTS~0 0) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= (select |#valid| 13) 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2023-04-01 12:11:22,943 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 12:11:22,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 12:11:22,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 19 [2023-04-01 12:11:22,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340907365] [2023-04-01 12:11:22,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 12:11:22,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-01 12:11:22,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:11:22,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-01 12:11:22,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=611, Invalid=6699, Unknown=0, NotChecked=0, Total=7310 [2023-04-01 12:11:22,948 INFO L87 Difference]: Start difference. First operand 731 states and 831 transitions. Second operand has 19 states, 12 states have (on average 11.333333333333334) internal successors, (136), 15 states have internal predecessors, (136), 7 states have call successors, (61), 6 states have call predecessors, (61), 11 states have return successors, (62), 10 states have call predecessors, (62), 6 states have call successors, (62) [2023-04-01 12:11:24,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:11:24,083 INFO L93 Difference]: Finished difference Result 1549 states and 1801 transitions. [2023-04-01 12:11:24,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-01 12:11:24,084 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 12 states have (on average 11.333333333333334) internal successors, (136), 15 states have internal predecessors, (136), 7 states have call successors, (61), 6 states have call predecessors, (61), 11 states have return successors, (62), 10 states have call predecessors, (62), 6 states have call successors, (62) Word has length 163 [2023-04-01 12:11:24,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:11:24,089 INFO L225 Difference]: With dead ends: 1549 [2023-04-01 12:11:24,089 INFO L226 Difference]: Without dead ends: 902 [2023-04-01 12:11:24,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 399 SyntacticMatches, 21 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5089 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=777, Invalid=9729, Unknown=0, NotChecked=0, Total=10506 [2023-04-01 12:11:24,094 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 395 mSDsluCounter, 1563 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 12:11:24,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 1797 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 12:11:24,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2023-04-01 12:11:24,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 821. [2023-04-01 12:11:24,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 452 states have (on average 1.1327433628318584) internal successors, (512), 487 states have internal predecessors, (512), 185 states have call successors, (185), 174 states have call predecessors, (185), 183 states have return successors, (234), 182 states have call predecessors, (234), 181 states have call successors, (234) [2023-04-01 12:11:24,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 931 transitions. [2023-04-01 12:11:24,162 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 931 transitions. Word has length 163 [2023-04-01 12:11:24,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:11:24,164 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 931 transitions. [2023-04-01 12:11:24,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 12 states have (on average 11.333333333333334) internal successors, (136), 15 states have internal predecessors, (136), 7 states have call successors, (61), 6 states have call predecessors, (61), 11 states have return successors, (62), 10 states have call predecessors, (62), 6 states have call successors, (62) [2023-04-01 12:11:24,164 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 931 transitions. [2023-04-01 12:11:24,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-04-01 12:11:24,169 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:11:24,169 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2023-04-01 12:11:24,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 12:11:24,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:11:24,376 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:11:24,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:11:24,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1549432866, now seen corresponding path program 1 times [2023-04-01 12:11:24,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:11:24,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316880542] [2023-04-01 12:11:24,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:11:24,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:11:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:11:24,848 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 39 proven. 24 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-04-01 12:11:24,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:11:24,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316880542] [2023-04-01 12:11:24,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316880542] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:11:24,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927137639] [2023-04-01 12:11:24,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:11:24,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:11:24,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:11:24,850 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 12:11:24,880 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 12:11:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:11:25,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-01 12:11:25,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:11:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-04-01 12:11:25,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:11:25,596 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 38 proven. 3 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-04-01 12:11:25,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927137639] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:11:25,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1405737552] [2023-04-01 12:11:25,599 INFO L159 IcfgInterpreter]: Started Sifa with 110 locations of interest [2023-04-01 12:11:25,599 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:11:25,600 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:11:25,600 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:11:25,600 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:11:25,800 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 12:11:25,824 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 129 for LOIs [2023-04-01 12:11:26,735 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 129 for LOIs [2023-04-01 12:11:26,961 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 129 for LOIs [2023-04-01 12:11:30,905 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 207 for LOIs [2023-04-01 12:11:30,971 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 178 for LOIs