/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.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 00:09:33,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 00:09:33,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 00:09:33,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 00:09:33,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 00:09:33,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 00:09:33,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 00:09:33,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 00:09:33,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 00:09:33,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 00:09:33,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 00:09:33,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 00:09:33,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 00:09:33,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 00:09:33,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 00:09:33,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 00:09:33,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 00:09:33,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 00:09:33,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 00:09:33,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 00:09:33,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 00:09:33,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 00:09:33,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 00:09:33,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 00:09:33,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 00:09:33,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 00:09:33,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 00:09:33,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 00:09:33,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 00:09:33,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 00:09:33,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 00:09:33,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 00:09:33,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 00:09:33,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 00:09:33,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 00:09:33,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 00:09:33,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 00:09:33,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 00:09:33,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 00:09:33,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 00:09:33,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 00:09:33,661 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 00:09:33,682 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 00:09:33,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 00:09:33,683 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 00:09:33,683 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 00:09:33,684 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 00:09:33,684 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 00:09:33,684 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 00:09:33,685 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 00:09:33,685 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 00:09:33,685 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 00:09:33,685 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 00:09:33,685 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 00:09:33,685 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 00:09:33,686 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 00:09:33,686 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 00:09:33,686 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 00:09:33,686 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 00:09:33,686 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 00:09:33,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 00:09:33,687 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 00:09:33,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 00:09:33,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 00:09:33,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 00:09:33,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 00:09:33,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 00:09:33,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 00:09:33,688 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 00:09:33,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 00:09:33,688 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 00:09:33,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 00:09:33,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 00:09:33,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 00:09:33,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:09:33,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 00:09:33,689 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 00:09:33,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 00:09:33,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 00:09:33,690 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 00:09:33,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 00:09:33,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 00:09:33,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 00:09:33,690 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-04-01 00:09:33,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 00:09:33,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 00:09:33,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 00:09:33,955 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 00:09:33,956 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 00:09:33,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2023-04-01 00:09:35,232 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 00:09:35,454 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 00:09:35,455 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2023-04-01 00:09:35,464 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/215dcabb2/9f45fdc2ac9c45e8ae225834e6d9d0e5/FLAG70f644a34 [2023-04-01 00:09:35,479 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/215dcabb2/9f45fdc2ac9c45e8ae225834e6d9d0e5 [2023-04-01 00:09:35,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 00:09:35,483 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 00:09:35,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 00:09:35,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 00:09:35,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 00:09:35,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:09:35" (1/1) ... [2023-04-01 00:09:35,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88025de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:35, skipping insertion in model container [2023-04-01 00:09:35,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:09:35" (1/1) ... [2023-04-01 00:09:35,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 00:09:35,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 00:09:35,741 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.ufo.UNBOUNDED.pals.c[14680,14693] [2023-04-01 00:09:35,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:09:35,756 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 00:09:35,807 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.ufo.UNBOUNDED.pals.c[14680,14693] [2023-04-01 00:09:35,807 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:09:35,822 INFO L208 MainTranslator]: Completed translation [2023-04-01 00:09:35,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:35 WrapperNode [2023-04-01 00:09:35,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 00:09:35,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 00:09:35,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 00:09:35,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 00:09:35,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:35" (1/1) ... [2023-04-01 00:09:35,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:35" (1/1) ... [2023-04-01 00:09:35,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:35" (1/1) ... [2023-04-01 00:09:35,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:35" (1/1) ... [2023-04-01 00:09:35,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:35" (1/1) ... [2023-04-01 00:09:35,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:35" (1/1) ... [2023-04-01 00:09:35,887 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:35" (1/1) ... [2023-04-01 00:09:35,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:35" (1/1) ... [2023-04-01 00:09:35,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 00:09:35,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 00:09:35,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 00:09:35,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 00:09:35,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:35" (1/1) ... [2023-04-01 00:09:35,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:09:35,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:09:35,928 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 00:09:35,936 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 00:09:35,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 00:09:35,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 00:09:35,960 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 00:09:35,960 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 00:09:35,960 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2023-04-01 00:09:35,960 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2023-04-01 00:09:35,960 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2023-04-01 00:09:35,960 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2023-04-01 00:09:35,961 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2023-04-01 00:09:35,961 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2023-04-01 00:09:35,961 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2023-04-01 00:09:35,961 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2023-04-01 00:09:35,961 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-01 00:09:35,961 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2023-04-01 00:09:35,961 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2023-04-01 00:09:35,961 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2023-04-01 00:09:35,961 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2023-04-01 00:09:35,962 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2023-04-01 00:09:35,962 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-01 00:09:35,962 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 00:09:35,962 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-01 00:09:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 00:09:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 00:09:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 00:09:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 00:09:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 00:09:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 00:09:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 00:09:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 00:09:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 00:09:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 00:09:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2023-04-01 00:09:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2023-04-01 00:09:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2023-04-01 00:09:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2023-04-01 00:09:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2023-04-01 00:09:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2023-04-01 00:09:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2023-04-01 00:09:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2023-04-01 00:09:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 00:09:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2023-04-01 00:09:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2023-04-01 00:09:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2023-04-01 00:09:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2023-04-01 00:09:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2023-04-01 00:09:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 00:09:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 00:09:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 00:09:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 00:09:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 00:09:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 00:09:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 00:09:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 00:09:36,064 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 00:09:36,066 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 00:09:36,628 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 00:09:36,772 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 00:09:36,772 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 00:09:36,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:09:36 BoogieIcfgContainer [2023-04-01 00:09:36,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 00:09:36,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 00:09:36,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 00:09:36,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 00:09:36,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:09:35" (1/3) ... [2023-04-01 00:09:36,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4699a47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:09:36, skipping insertion in model container [2023-04-01 00:09:36,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:35" (2/3) ... [2023-04-01 00:09:36,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4699a47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:09:36, skipping insertion in model container [2023-04-01 00:09:36,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:09:36" (3/3) ... [2023-04-01 00:09:36,786 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2023-04-01 00:09:36,801 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 00:09:36,801 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 00:09:36,864 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 00:09:36,870 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;@71d61c48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 00:09:36,871 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 00:09:36,876 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 00:09:36,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-04-01 00:09:36,885 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:09:36,886 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 00:09:36,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:09:36,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:09:36,893 INFO L85 PathProgramCache]: Analyzing trace with hash 558178186, now seen corresponding path program 1 times [2023-04-01 00:09:36,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:09:36,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305804221] [2023-04-01 00:09:36,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:36,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:09:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:37,631 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 00:09:37,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:09:37,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305804221] [2023-04-01 00:09:37,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305804221] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:09:37,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:09:37,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 00:09:37,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305803768] [2023-04-01 00:09:37,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:09:37,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 00:09:37,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:09:37,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 00:09:37,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 00:09:37,685 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 00:09:37,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:09:37,888 INFO L93 Difference]: Finished difference Result 368 states and 559 transitions. [2023-04-01 00:09:37,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 00:09:37,895 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 00:09:37,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:09:37,909 INFO L225 Difference]: With dead ends: 368 [2023-04-01 00:09:37,910 INFO L226 Difference]: Without dead ends: 190 [2023-04-01 00:09:37,920 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 00:09:37,926 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 5 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 00:09:37,928 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 00:09:37,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-04-01 00:09:37,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2023-04-01 00:09:37,980 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 00:09:37,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 269 transitions. [2023-04-01 00:09:37,990 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 269 transitions. Word has length 48 [2023-04-01 00:09:37,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:09:37,992 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 269 transitions. [2023-04-01 00:09:37,993 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 00:09:37,993 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 269 transitions. [2023-04-01 00:09:37,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-01 00:09:37,998 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:09:37,998 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 00:09:37,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 00:09:38,002 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:09:38,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:09:38,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1895037546, now seen corresponding path program 1 times [2023-04-01 00:09:38,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:09:38,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967882907] [2023-04-01 00:09:38,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:38,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:09:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:38,824 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 00:09:38,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:09:38,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967882907] [2023-04-01 00:09:38,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967882907] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 00:09:38,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232839276] [2023-04-01 00:09:38,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:38,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 00:09:38,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:09:38,837 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 00:09:38,855 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 00:09:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:39,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 00:09:39,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 00:09:39,191 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 00:09:39,191 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 00:09:39,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232839276] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:09:39,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 00:09:39,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 15 [2023-04-01 00:09:39,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183404269] [2023-04-01 00:09:39,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:09:39,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 00:09:39,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:09:39,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 00:09:39,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-04-01 00:09:39,198 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 00:09:40,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:09:40,117 INFO L93 Difference]: Finished difference Result 428 states and 605 transitions. [2023-04-01 00:09:40,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 00:09:40,118 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 00:09:40,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:09:40,122 INFO L225 Difference]: With dead ends: 428 [2023-04-01 00:09:40,122 INFO L226 Difference]: Without dead ends: 249 [2023-04-01 00:09:40,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2023-04-01 00:09:40,125 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 506 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 00:09:40,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 61 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 00:09:40,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-04-01 00:09:40,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 244. [2023-04-01 00:09:40,152 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 00:09:40,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 340 transitions. [2023-04-01 00:09:40,154 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 340 transitions. Word has length 66 [2023-04-01 00:09:40,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:09:40,155 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 340 transitions. [2023-04-01 00:09:40,155 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 00:09:40,155 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 340 transitions. [2023-04-01 00:09:40,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-01 00:09:40,156 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:09:40,157 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 00:09:40,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 00:09:40,365 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 00:09:40,365 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:09:40,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:09:40,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1927572199, now seen corresponding path program 1 times [2023-04-01 00:09:40,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:09:40,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799949995] [2023-04-01 00:09:40,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:40,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:09:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:40,926 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 00:09:40,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:09:40,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799949995] [2023-04-01 00:09:40,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799949995] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 00:09:40,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092960454] [2023-04-01 00:09:40,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:40,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 00:09:40,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:09:40,929 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 00:09:40,954 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 00:09:41,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:41,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 00:09:41,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 00:09:41,265 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 00:09:41,266 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 00:09:41,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092960454] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:09:41,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 00:09:41,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 15 [2023-04-01 00:09:41,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99876435] [2023-04-01 00:09:41,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:09:41,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 00:09:41,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:09:41,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 00:09:41,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-04-01 00:09:41,268 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 00:09:41,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:09:41,943 INFO L93 Difference]: Finished difference Result 430 states and 607 transitions. [2023-04-01 00:09:41,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 00:09:41,944 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 00:09:41,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:09:41,946 INFO L225 Difference]: With dead ends: 430 [2023-04-01 00:09:41,946 INFO L226 Difference]: Without dead ends: 248 [2023-04-01 00:09:41,947 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 00:09:41,948 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 00:09:41,949 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 00:09:41,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-04-01 00:09:41,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 244. [2023-04-01 00:09:41,983 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 00:09:41,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 340 transitions. [2023-04-01 00:09:41,988 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 340 transitions. Word has length 67 [2023-04-01 00:09:41,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:09:41,989 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 340 transitions. [2023-04-01 00:09:41,990 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 00:09:41,990 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 340 transitions. [2023-04-01 00:09:41,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-01 00:09:41,995 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:09:41,995 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 00:09:42,005 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 00:09:42,203 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 00:09:42,203 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:09:42,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:09:42,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1039266438, now seen corresponding path program 1 times [2023-04-01 00:09:42,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:09:42,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032344338] [2023-04-01 00:09:42,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:42,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:09:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:42,783 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 00:09:42,783 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:09:42,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032344338] [2023-04-01 00:09:42,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032344338] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 00:09:42,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251226051] [2023-04-01 00:09:42,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:42,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 00:09:42,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:09:42,794 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 00:09:42,796 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 00:09:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:42,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-01 00:09:42,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 00:09:43,159 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 00:09:43,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 00:09:43,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251226051] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:09:43,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 00:09:43,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2023-04-01 00:09:43,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883006572] [2023-04-01 00:09:43,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:09:43,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 00:09:43,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:09:43,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 00:09:43,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-04-01 00:09:43,161 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 00:09:43,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:09:43,487 INFO L93 Difference]: Finished difference Result 661 states and 924 transitions. [2023-04-01 00:09:43,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 00:09:43,487 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 00:09:43,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:09:43,491 INFO L225 Difference]: With dead ends: 661 [2023-04-01 00:09:43,491 INFO L226 Difference]: Without dead ends: 441 [2023-04-01 00:09:43,492 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 00:09:43,493 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 00:09:43,493 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 00:09:43,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-04-01 00:09:43,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 429. [2023-04-01 00:09:43,548 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 00:09:43,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 603 transitions. [2023-04-01 00:09:43,550 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 603 transitions. Word has length 69 [2023-04-01 00:09:43,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:09:43,551 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 603 transitions. [2023-04-01 00:09:43,551 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 00:09:43,551 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 603 transitions. [2023-04-01 00:09:43,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-01 00:09:43,552 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:09:43,552 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 00:09:43,564 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 00:09:43,761 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 00:09:43,761 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:09:43,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:09:43,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1911334742, now seen corresponding path program 1 times [2023-04-01 00:09:43,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:09:43,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843697309] [2023-04-01 00:09:43,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:43,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:09:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:44,328 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 00:09:44,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:09:44,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843697309] [2023-04-01 00:09:44,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843697309] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 00:09:44,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552863988] [2023-04-01 00:09:44,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:44,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 00:09:44,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:09:44,330 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 00:09:44,352 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 00:09:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:44,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 20 conjunts are in the unsatisfiable core [2023-04-01 00:09:44,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 00:09:45,862 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 00:09:45,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 00:09:47,843 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 8191 disjunctions. This might take some time... [2023-04-01 00:09:52,077 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 8191 disjunctions.