/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 IntervalDomain -i ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 00:09:03,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 00:09:03,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 00:09:03,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 00:09:03,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 00:09:03,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 00:09:03,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 00:09:03,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 00:09:03,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 00:09:03,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 00:09:03,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 00:09:03,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 00:09:03,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 00:09:03,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 00:09:03,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 00:09:03,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 00:09:03,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 00:09:03,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 00:09:03,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 00:09:03,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 00:09:03,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 00:09:03,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 00:09:03,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 00:09:03,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 00:09:03,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 00:09:03,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 00:09:03,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 00:09:03,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 00:09:03,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 00:09:03,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 00:09:03,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 00:09:03,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 00:09:03,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 00:09:03,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 00:09:03,985 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 00:09:03,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 00:09:03,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 00:09:03,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 00:09:03,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 00:09:03,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 00:09:03,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 00:09:03,988 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 00:09:04,011 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 00:09:04,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 00:09:04,012 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 00:09:04,012 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 00:09:04,013 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 00:09:04,013 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 00:09:04,013 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 00:09:04,013 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 00:09:04,013 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 00:09:04,013 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 00:09:04,014 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 00:09:04,014 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 00:09:04,014 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 00:09:04,014 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 00:09:04,014 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 00:09:04,014 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 00:09:04,015 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 00:09:04,015 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 00:09:04,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 00:09:04,015 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 00:09:04,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 00:09:04,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 00:09:04,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 00:09:04,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 00:09:04,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 00:09:04,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 00:09:04,016 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 00:09:04,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 00:09:04,016 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 00:09:04,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 00:09:04,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 00:09:04,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 00:09:04,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:09:04,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 00:09:04,017 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 00:09:04,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 00:09:04,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 00:09:04,017 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 00:09:04,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 00:09:04,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 00:09:04,018 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 00:09:04,018 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-04-01 00:09:04,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 00:09:04,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 00:09:04,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 00:09:04,245 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 00:09:04,246 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 00:09:04,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2023-04-01 00:09:05,574 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 00:09:05,771 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 00:09:05,772 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2023-04-01 00:09:05,779 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aa67cc7c/42ebe2699fb4465688612820bbf5abdf/FLAG9b653e1b6 [2023-04-01 00:09:05,791 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aa67cc7c/42ebe2699fb4465688612820bbf5abdf [2023-04-01 00:09:05,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 00:09:05,794 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 00:09:05,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 00:09:05,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 00:09:05,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 00:09:05,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:09:05" (1/1) ... [2023-04-01 00:09:05,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f5fb36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:05, skipping insertion in model container [2023-04-01 00:09:05,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:09:05" (1/1) ... [2023-04-01 00:09:05,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 00:09:05,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 00:09:06,010 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/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c[14684,14697] [2023-04-01 00:09:06,013 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:09:06,022 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 00:09:06,061 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/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c[14684,14697] [2023-04-01 00:09:06,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:09:06,074 INFO L208 MainTranslator]: Completed translation [2023-04-01 00:09:06,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:06 WrapperNode [2023-04-01 00:09:06,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 00:09:06,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 00:09:06,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 00:09:06,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 00:09:06,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:06" (1/1) ... [2023-04-01 00:09:06,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:06" (1/1) ... [2023-04-01 00:09:06,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:06" (1/1) ... [2023-04-01 00:09:06,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:06" (1/1) ... [2023-04-01 00:09:06,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:06" (1/1) ... [2023-04-01 00:09:06,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:06" (1/1) ... [2023-04-01 00:09:06,125 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:06" (1/1) ... [2023-04-01 00:09:06,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:06" (1/1) ... [2023-04-01 00:09:06,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 00:09:06,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 00:09:06,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 00:09:06,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 00:09:06,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:06" (1/1) ... [2023-04-01 00:09:06,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:09:06,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:09:06,202 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 00:09:06,204 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 00:09:06,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 00:09:06,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 00:09:06,249 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 00:09:06,250 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 00:09:06,250 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2023-04-01 00:09:06,250 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2023-04-01 00:09:06,250 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2023-04-01 00:09:06,251 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2023-04-01 00:09:06,251 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2023-04-01 00:09:06,251 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2023-04-01 00:09:06,251 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2023-04-01 00:09:06,251 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2023-04-01 00:09:06,251 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-01 00:09:06,251 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2023-04-01 00:09:06,251 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2023-04-01 00:09:06,287 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2023-04-01 00:09:06,287 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2023-04-01 00:09:06,287 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2023-04-01 00:09:06,287 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-01 00:09:06,287 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 00:09:06,287 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-01 00:09:06,287 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 00:09:06,287 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 00:09:06,287 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 00:09:06,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 00:09:06,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 00:09:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 00:09:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 00:09:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 00:09:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 00:09:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 00:09:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2023-04-01 00:09:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2023-04-01 00:09:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2023-04-01 00:09:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2023-04-01 00:09:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2023-04-01 00:09:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2023-04-01 00:09:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2023-04-01 00:09:06,289 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2023-04-01 00:09:06,289 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 00:09:06,289 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2023-04-01 00:09:06,289 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2023-04-01 00:09:06,290 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2023-04-01 00:09:06,290 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2023-04-01 00:09:06,290 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2023-04-01 00:09:06,291 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 00:09:06,291 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 00:09:06,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 00:09:06,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 00:09:06,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 00:09:06,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 00:09:06,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 00:09:06,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 00:09:06,430 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 00:09:06,432 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 00:09:06,838 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 00:09:06,929 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 00:09:06,930 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 00:09:06,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:09:06 BoogieIcfgContainer [2023-04-01 00:09:06,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 00:09:06,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 00:09:06,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 00:09:06,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 00:09:06,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:09:05" (1/3) ... [2023-04-01 00:09:06,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f57d7b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:09:06, skipping insertion in model container [2023-04-01 00:09:06,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:06" (2/3) ... [2023-04-01 00:09:06,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f57d7b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:09:06, skipping insertion in model container [2023-04-01 00:09:06,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:09:06" (3/3) ... [2023-04-01 00:09:06,940 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2023-04-01 00:09:06,955 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 00:09:06,955 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 00:09:07,021 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 00:09:07,028 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;@41371022, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 00:09:07,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 00:09:07,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 189 states, 125 states have (on average 1.472) internal successors, (184), 127 states have internal predecessors, (184), 43 states have call successors, (43), 19 states have call predecessors, (43), 19 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-04-01 00:09:07,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-04-01 00:09:07,045 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:09:07,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:09:07,047 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:09:07,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:09:07,055 INFO L85 PathProgramCache]: Analyzing trace with hash 558178186, now seen corresponding path program 1 times [2023-04-01 00:09:07,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:09:07,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330686389] [2023-04-01 00:09:07,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:07,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:09:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:07,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:09:07,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:09:07,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330686389] [2023-04-01 00:09:07,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330686389] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:09:07,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:09:07,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 00:09:07,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529260068] [2023-04-01 00:09:07,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:09:07,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 00:09:07,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:09:07,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 00:09:07,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 00:09:07,776 INFO L87 Difference]: Start difference. First operand has 189 states, 125 states have (on average 1.472) internal successors, (184), 127 states have internal predecessors, (184), 43 states have call successors, (43), 19 states have call predecessors, (43), 19 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-04-01 00:09:07,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:09:07,925 INFO L93 Difference]: Finished difference Result 368 states and 559 transitions. [2023-04-01 00:09:07,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 00:09:07,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 48 [2023-04-01 00:09:07,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:09:07,937 INFO L225 Difference]: With dead ends: 368 [2023-04-01 00:09:07,937 INFO L226 Difference]: Without dead ends: 190 [2023-04-01 00:09:07,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:09:07,944 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 5 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:09:07,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 737 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:09:07,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-04-01 00:09:07,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2023-04-01 00:09:07,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 127 states have (on average 1.4488188976377954) internal successors, (184), 128 states have internal predecessors, (184), 43 states have call successors, (43), 20 states have call predecessors, (43), 19 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-04-01 00:09:07,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 269 transitions. [2023-04-01 00:09:08,004 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 269 transitions. Word has length 48 [2023-04-01 00:09:08,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:09:08,005 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 269 transitions. [2023-04-01 00:09:08,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-04-01 00:09:08,006 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 269 transitions. [2023-04-01 00:09:08,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-01 00:09:08,009 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:09:08,009 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] [2023-04-01 00:09:08,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 00:09:08,010 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:09:08,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:09:08,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1895037546, now seen corresponding path program 1 times [2023-04-01 00:09:08,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:09:08,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235694079] [2023-04-01 00:09:08,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:08,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:09:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:08,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 00:09:08,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:09:08,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235694079] [2023-04-01 00:09:08,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235694079] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 00:09:08,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58671123] [2023-04-01 00:09:08,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:08,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 00:09:08,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:09:08,726 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 00:09:08,727 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 00:09:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:08,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 00:09:08,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 00:09:09,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:09:09,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 00:09:09,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58671123] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:09:09,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 00:09:09,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 15 [2023-04-01 00:09:09,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198166462] [2023-04-01 00:09:09,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:09:09,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 00:09:09,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:09:09,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 00:09:09,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-04-01 00:09:09,077 INFO L87 Difference]: Start difference. First operand 190 states and 269 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2023-04-01 00:09:09,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:09:09,787 INFO L93 Difference]: Finished difference Result 428 states and 605 transitions. [2023-04-01 00:09:09,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 00:09:09,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) Word has length 66 [2023-04-01 00:09:09,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:09:09,791 INFO L225 Difference]: With dead ends: 428 [2023-04-01 00:09:09,791 INFO L226 Difference]: Without dead ends: 249 [2023-04-01 00:09:09,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2023-04-01 00:09:09,793 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 506 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 00:09:09,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 61 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 00:09:09,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-04-01 00:09:09,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 244. [2023-04-01 00:09:09,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 161 states have (on average 1.4409937888198758) internal successors, (232), 163 states have internal predecessors, (232), 54 states have call successors, (54), 29 states have call predecessors, (54), 28 states have return successors, (54), 51 states have call predecessors, (54), 53 states have call successors, (54) [2023-04-01 00:09:09,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 340 transitions. [2023-04-01 00:09:09,818 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 340 transitions. Word has length 66 [2023-04-01 00:09:09,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:09:09,818 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 340 transitions. [2023-04-01 00:09:09,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2023-04-01 00:09:09,819 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 340 transitions. [2023-04-01 00:09:09,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-01 00:09:09,820 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:09:09,820 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] [2023-04-01 00:09:09,842 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 00:09:10,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 00:09:10,028 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:09:10,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:09:10,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1927572199, now seen corresponding path program 1 times [2023-04-01 00:09:10,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:09:10,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878157997] [2023-04-01 00:09:10,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:10,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:09:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:10,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 00:09:10,534 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:09:10,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878157997] [2023-04-01 00:09:10,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878157997] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 00:09:10,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278250715] [2023-04-01 00:09:10,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:10,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 00:09:10,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:09:10,549 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 00:09:10,577 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 00:09:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:10,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 00:09:10,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 00:09:10,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:09:10,826 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 00:09:10,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278250715] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:09:10,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 00:09:10,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 15 [2023-04-01 00:09:10,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643394369] [2023-04-01 00:09:10,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:09:10,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 00:09:10,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:09:10,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 00:09:10,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-04-01 00:09:10,828 INFO L87 Difference]: Start difference. First operand 244 states and 340 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2023-04-01 00:09:11,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:09:11,546 INFO L93 Difference]: Finished difference Result 430 states and 607 transitions. [2023-04-01 00:09:11,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 00:09:11,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) Word has length 67 [2023-04-01 00:09:11,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:09:11,548 INFO L225 Difference]: With dead ends: 430 [2023-04-01 00:09:11,548 INFO L226 Difference]: Without dead ends: 248 [2023-04-01 00:09:11,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-04-01 00:09:11,550 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 495 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 00:09:11,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 69 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 00:09:11,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-04-01 00:09:11,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 244. [2023-04-01 00:09:11,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 161 states have (on average 1.4409937888198758) internal successors, (232), 163 states have internal predecessors, (232), 54 states have call successors, (54), 29 states have call predecessors, (54), 28 states have return successors, (54), 51 states have call predecessors, (54), 53 states have call successors, (54) [2023-04-01 00:09:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 340 transitions. [2023-04-01 00:09:11,570 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 340 transitions. Word has length 67 [2023-04-01 00:09:11,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:09:11,571 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 340 transitions. [2023-04-01 00:09:11,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2023-04-01 00:09:11,571 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 340 transitions. [2023-04-01 00:09:11,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-01 00:09:11,581 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:09:11,581 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] [2023-04-01 00:09:11,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 00:09:11,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-04-01 00:09:11,789 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:09:11,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:09:11,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1039266438, now seen corresponding path program 1 times [2023-04-01 00:09:11,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:09:11,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558517836] [2023-04-01 00:09:11,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:11,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:09:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 00:09:12,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:09:12,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558517836] [2023-04-01 00:09:12,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558517836] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 00:09:12,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424154114] [2023-04-01 00:09:12,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:12,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 00:09:12,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:09:12,305 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 00:09:12,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 00:09:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:12,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-01 00:09:12,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 00:09:12,631 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 00:09:12,631 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 00:09:12,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424154114] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:09:12,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 00:09:12,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2023-04-01 00:09:12,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643348458] [2023-04-01 00:09:12,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:09:12,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 00:09:12,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:09:12,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 00:09:12,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-04-01 00:09:12,633 INFO L87 Difference]: Start difference. First operand 244 states and 340 transitions. Second operand has 8 states, 6 states have (on average 6.5) internal successors, (39), 8 states have internal predecessors, (39), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-04-01 00:09:12,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:09:12,922 INFO L93 Difference]: Finished difference Result 661 states and 924 transitions. [2023-04-01 00:09:12,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 00:09:12,922 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.5) internal successors, (39), 8 states have internal predecessors, (39), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 69 [2023-04-01 00:09:12,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:09:12,925 INFO L225 Difference]: With dead ends: 661 [2023-04-01 00:09:12,925 INFO L226 Difference]: Without dead ends: 441 [2023-04-01 00:09:12,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-04-01 00:09:12,927 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 240 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:09:12,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 1457 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:09:12,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-04-01 00:09:12,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 429. [2023-04-01 00:09:12,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 286 states have (on average 1.4405594405594406) internal successors, (412), 291 states have internal predecessors, (412), 94 states have call successors, (94), 47 states have call predecessors, (94), 48 states have return successors, (97), 90 states have call predecessors, (97), 93 states have call successors, (97) [2023-04-01 00:09:12,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 603 transitions. [2023-04-01 00:09:12,961 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 603 transitions. Word has length 69 [2023-04-01 00:09:12,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:09:12,961 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 603 transitions. [2023-04-01 00:09:12,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.5) internal successors, (39), 8 states have internal predecessors, (39), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-04-01 00:09:12,961 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 603 transitions. [2023-04-01 00:09:12,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-01 00:09:12,963 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:09:12,963 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] [2023-04-01 00:09:12,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 00:09:13,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 00:09:13,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:09:13,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:09:13,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1911334742, now seen corresponding path program 1 times [2023-04-01 00:09:13,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:09:13,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503808788] [2023-04-01 00:09:13,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:13,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:09:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:13,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 00:09:13,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:09:13,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503808788] [2023-04-01 00:09:13,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503808788] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 00:09:13,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097109992] [2023-04-01 00:09:13,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:13,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 00:09:13,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:09:13,610 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 00:09:13,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 00:09:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:13,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 20 conjunts are in the unsatisfiable core [2023-04-01 00:09:13,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 00:09:14,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 00:09:14,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 00:09:16,698 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 8191 disjunctions. This might take some time... [2023-04-01 00:09:20,965 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 8191 disjunctions.