/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain EqDomain -i ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:19:27,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:19:27,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:19:27,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:19:27,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:19:27,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:19:27,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:19:27,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:19:27,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:19:27,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:19:27,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:19:27,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:19:27,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:19:27,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:19:27,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:19:27,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:19:27,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:19:27,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:19:27,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:19:27,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:19:27,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:19:27,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:19:27,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:19:27,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:19:27,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:19:27,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:19:27,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:19:27,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:19:27,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:19:27,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:19:27,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:19:27,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:19:27,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:19:27,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:19:27,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:19:27,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:19:27,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:19:27,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:19:27,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:19:27,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:19:27,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:19:27,839 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 12:19:27,862 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:19:27,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:19:27,863 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:19:27,863 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:19:27,864 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:19:27,864 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:19:27,864 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:19:27,864 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:19:27,864 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:19:27,864 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:19:27,865 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:19:27,865 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:19:27,865 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:19:27,865 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:19:27,865 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:19:27,865 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:19:27,865 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:19:27,865 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:19:27,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:19:27,866 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:19:27,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:19:27,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:19:27,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:19:27,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:19:27,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:19:27,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:19:27,867 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:19:27,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:19:27,867 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:19:27,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:19:27,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:19:27,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:19:27,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:19:27,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:19:27,867 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:19:27,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:19:27,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:19:27,868 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:19:27,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:19:27,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:19:27,868 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:19:27,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:19:28,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:19:28,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:19:28,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:19:28,082 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:19:28,082 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:19:28,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2023-04-01 12:19:28,976 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:19:29,201 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:19:29,202 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2023-04-01 12:19:29,208 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/225999fb0/23f177aeeb3f42ea95c4e8706e4d0f57/FLAG96836155a [2023-04-01 12:19:29,221 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/225999fb0/23f177aeeb3f42ea95c4e8706e4d0f57 [2023-04-01 12:19:29,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:19:29,223 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:19:29,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:19:29,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:19:29,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:19:29,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:19:29" (1/1) ... [2023-04-01 12:19:29,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e39473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:19:29, skipping insertion in model container [2023-04-01 12:19:29,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:19:29" (1/1) ... [2023-04-01 12:19:29,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:19:29,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:19:29,414 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.5.ufo.UNBOUNDED.pals.c[14577,14590] [2023-04-01 12:19:29,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:19:29,436 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:19:29,476 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.5.ufo.UNBOUNDED.pals.c[14577,14590] [2023-04-01 12:19:29,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:19:29,488 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:19:29,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:19:29 WrapperNode [2023-04-01 12:19:29,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:19:29,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:19:29,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:19:29,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:19:29,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:19:29" (1/1) ... [2023-04-01 12:19:29,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:19:29" (1/1) ... [2023-04-01 12:19:29,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:19:29" (1/1) ... [2023-04-01 12:19:29,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:19:29" (1/1) ... [2023-04-01 12:19:29,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:19:29" (1/1) ... [2023-04-01 12:19:29,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:19:29" (1/1) ... [2023-04-01 12:19:29,523 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:19:29" (1/1) ... [2023-04-01 12:19:29,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:19:29" (1/1) ... [2023-04-01 12:19:29,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:19:29,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:19:29,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:19:29,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:19:29,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:19:29" (1/1) ... [2023-04-01 12:19:29,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:19:29,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:19:29,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 12:19:29,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 12:19:29,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:19:29,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:19:29,594 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:19:29,595 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 12:19:29,595 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2023-04-01 12:19:29,595 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2023-04-01 12:19:29,596 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2023-04-01 12:19:29,596 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2023-04-01 12:19:29,596 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2023-04-01 12:19:29,596 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2023-04-01 12:19:29,596 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2023-04-01 12:19:29,596 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2023-04-01 12:19:29,596 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-01 12:19:29,596 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2023-04-01 12:19:29,596 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2023-04-01 12:19:29,596 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2023-04-01 12:19:29,597 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2023-04-01 12:19:29,597 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2023-04-01 12:19:29,597 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-01 12:19:29,597 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:19:29,597 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-01 12:19:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:19:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:19:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:19:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:19:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 12:19:29,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 12:19:29,598 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 12:19:29,598 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 12:19:29,598 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 12:19:29,598 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 12:19:29,598 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2023-04-01 12:19:29,598 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2023-04-01 12:19:29,598 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2023-04-01 12:19:29,598 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2023-04-01 12:19:29,598 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2023-04-01 12:19:29,598 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2023-04-01 12:19:29,598 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2023-04-01 12:19:29,598 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2023-04-01 12:19:29,599 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 12:19:29,599 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2023-04-01 12:19:29,599 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2023-04-01 12:19:29,599 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2023-04-01 12:19:29,599 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2023-04-01 12:19:29,599 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2023-04-01 12:19:29,600 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 12:19:29,600 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:19:29,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:19:29,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:19:29,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:19:29,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:19:29,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:19:29,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:19:29,711 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:19:29,712 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:19:30,132 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:19:30,207 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:19:30,208 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 12:19:30,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:19:30 BoogieIcfgContainer [2023-04-01 12:19:30,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:19:30,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:19:30,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:19:30,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:19:30,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:19:29" (1/3) ... [2023-04-01 12:19:30,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6deeb87c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:19:30, skipping insertion in model container [2023-04-01 12:19:30,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:19:29" (2/3) ... [2023-04-01 12:19:30,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6deeb87c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:19:30, skipping insertion in model container [2023-04-01 12:19:30,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:19:30" (3/3) ... [2023-04-01 12:19:30,218 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2023-04-01 12:19:30,231 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:19:30,231 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:19:30,283 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:19:30,288 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;@780eac9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:19:30,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:19:30,294 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 122 states have (on average 1.459016393442623) internal successors, (178), 124 states have internal predecessors, (178), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-04-01 12:19:30,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-04-01 12:19:30,301 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:19:30,302 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 12:19:30,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:19:30,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:19:30,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1164710770, now seen corresponding path program 1 times [2023-04-01 12:19:30,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:19:30,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549772965] [2023-04-01 12:19:30,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:19:30,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:19:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:19:30,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:19:30,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:19:30,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549772965] [2023-04-01 12:19:30,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549772965] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:19:30,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:19:30,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 12:19:30,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603064237] [2023-04-01 12:19:30,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:19:30,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 12:19:30,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:19:30,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 12:19:30,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 12:19:30,872 INFO L87 Difference]: Start difference. First operand has 185 states, 122 states have (on average 1.459016393442623) internal successors, (178), 124 states have internal predecessors, (178), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) 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 12:19:31,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:19:31,023 INFO L93 Difference]: Finished difference Result 360 states and 543 transitions. [2023-04-01 12:19:31,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 12:19:31,026 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 12:19:31,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:19:31,037 INFO L225 Difference]: With dead ends: 360 [2023-04-01 12:19:31,037 INFO L226 Difference]: Without dead ends: 186 [2023-04-01 12:19:31,045 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 12:19:31,049 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 5 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:19:31,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 710 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:19:31,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-04-01 12:19:31,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2023-04-01 12:19:31,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 124 states have (on average 1.435483870967742) internal successors, (178), 125 states have internal predecessors, (178), 42 states have call successors, (42), 20 states have call predecessors, (42), 19 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-04-01 12:19:31,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 261 transitions. [2023-04-01 12:19:31,109 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 261 transitions. Word has length 48 [2023-04-01 12:19:31,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:19:31,110 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 261 transitions. [2023-04-01 12:19:31,110 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 12:19:31,110 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 261 transitions. [2023-04-01 12:19:31,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-01 12:19:31,112 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:19:31,112 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 12:19:31,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:19:31,113 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:19:31,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:19:31,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2107247100, now seen corresponding path program 1 times [2023-04-01 12:19:31,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:19:31,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802203004] [2023-04-01 12:19:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:19:31,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:19:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:19:31,715 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 12:19:31,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:19:31,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802203004] [2023-04-01 12:19:31,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802203004] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:19:31,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595678472] [2023-04-01 12:19:31,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:19:31,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:19:31,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:19:31,723 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 12:19:31,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 12:19:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:19:31,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 12:19:31,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:19:32,045 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 12:19:32,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 12:19:32,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595678472] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:19:32,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 12:19:32,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 15 [2023-04-01 12:19:32,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73903159] [2023-04-01 12:19:32,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:19:32,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:19:32,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:19:32,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:19:32,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-04-01 12:19:32,054 INFO L87 Difference]: Start difference. First operand 186 states and 261 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 12:19:32,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:19:32,700 INFO L93 Difference]: Finished difference Result 416 states and 581 transitions. [2023-04-01 12:19:32,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 12:19:32,701 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 12:19:32,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:19:32,706 INFO L225 Difference]: With dead ends: 416 [2023-04-01 12:19:32,706 INFO L226 Difference]: Without dead ends: 241 [2023-04-01 12:19:32,707 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 12:19:32,708 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 476 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 12:19:32,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 61 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 12:19:32,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-04-01 12:19:32,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 236. [2023-04-01 12:19:32,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 155 states have (on average 1.4193548387096775) internal successors, (220), 157 states have internal predecessors, (220), 52 states have call successors, (52), 29 states have call predecessors, (52), 28 states have return successors, (52), 49 states have call predecessors, (52), 51 states have call successors, (52) [2023-04-01 12:19:32,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 324 transitions. [2023-04-01 12:19:32,742 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 324 transitions. Word has length 66 [2023-04-01 12:19:32,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:19:32,743 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 324 transitions. [2023-04-01 12:19:32,743 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 12:19:32,743 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 324 transitions. [2023-04-01 12:19:32,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-01 12:19:32,744 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:19:32,744 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 12:19:32,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 12:19:32,951 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 12:19:32,952 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:19:32,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:19:32,952 INFO L85 PathProgramCache]: Analyzing trace with hash 269142149, now seen corresponding path program 1 times [2023-04-01 12:19:32,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:19:32,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807863891] [2023-04-01 12:19:32,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:19:32,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:19:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:19:33,424 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 12:19:33,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:19:33,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807863891] [2023-04-01 12:19:33,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807863891] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:19:33,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118071396] [2023-04-01 12:19:33,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:19:33,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:19:33,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:19:33,430 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 12:19:33,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 12:19:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:19:33,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 12:19:33,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:19:33,687 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 12:19:33,687 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 12:19:33,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118071396] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:19:33,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 12:19:33,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 15 [2023-04-01 12:19:33,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510913311] [2023-04-01 12:19:33,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:19:33,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:19:33,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:19:33,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:19:33,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-04-01 12:19:33,689 INFO L87 Difference]: Start difference. First operand 236 states and 324 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 12:19:34,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:19:34,313 INFO L93 Difference]: Finished difference Result 418 states and 583 transitions. [2023-04-01 12:19:34,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 12:19:34,313 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 12:19:34,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:19:34,317 INFO L225 Difference]: With dead ends: 418 [2023-04-01 12:19:34,317 INFO L226 Difference]: Without dead ends: 240 [2023-04-01 12:19:34,318 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 12:19:34,320 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 465 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 12:19:34,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 69 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 12:19:34,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-04-01 12:19:34,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 236. [2023-04-01 12:19:34,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 155 states have (on average 1.4193548387096775) internal successors, (220), 157 states have internal predecessors, (220), 52 states have call successors, (52), 29 states have call predecessors, (52), 28 states have return successors, (52), 49 states have call predecessors, (52), 51 states have call successors, (52) [2023-04-01 12:19:34,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 324 transitions. [2023-04-01 12:19:34,345 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 324 transitions. Word has length 67 [2023-04-01 12:19:34,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:19:34,346 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 324 transitions. [2023-04-01 12:19:34,346 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 12:19:34,346 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 324 transitions. [2023-04-01 12:19:34,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-01 12:19:34,350 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:19:34,350 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 12:19:34,368 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 12:19:34,558 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 12:19:34,559 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:19:34,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:19:34,559 INFO L85 PathProgramCache]: Analyzing trace with hash -418162614, now seen corresponding path program 1 times [2023-04-01 12:19:34,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:19:34,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200716811] [2023-04-01 12:19:34,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:19:34,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:19:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:19:34,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:19:34,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:19:34,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200716811] [2023-04-01 12:19:34,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200716811] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:19:34,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:19:34,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:19:34,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100459904] [2023-04-01 12:19:34,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:19:34,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:19:34,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:19:34,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:19:34,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:19:34,685 INFO L87 Difference]: Start difference. First operand 236 states and 324 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 6 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-04-01 12:19:35,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:19:35,230 INFO L93 Difference]: Finished difference Result 419 states and 584 transitions. [2023-04-01 12:19:35,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 12:19:35,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 6 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 69 [2023-04-01 12:19:35,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:19:35,232 INFO L225 Difference]: With dead ends: 419 [2023-04-01 12:19:35,233 INFO L226 Difference]: Without dead ends: 241 [2023-04-01 12:19:35,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 12:19:35,234 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 478 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 12:19:35,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 64 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 12:19:35,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-04-01 12:19:35,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 237. [2023-04-01 12:19:35,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 156 states have (on average 1.4166666666666667) internal successors, (221), 158 states have internal predecessors, (221), 52 states have call successors, (52), 29 states have call predecessors, (52), 28 states have return successors, (52), 49 states have call predecessors, (52), 51 states have call successors, (52) [2023-04-01 12:19:35,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 325 transitions. [2023-04-01 12:19:35,252 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 325 transitions. Word has length 69 [2023-04-01 12:19:35,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:19:35,252 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 325 transitions. [2023-04-01 12:19:35,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 6 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-04-01 12:19:35,253 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 325 transitions. [2023-04-01 12:19:35,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-01 12:19:35,257 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:19:35,257 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 12:19:35,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:19:35,257 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:19:35,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:19:35,258 INFO L85 PathProgramCache]: Analyzing trace with hash -539467867, now seen corresponding path program 1 times [2023-04-01 12:19:35,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:19:35,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303407464] [2023-04-01 12:19:35,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:19:35,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:19:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:19:35,710 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 12:19:35,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:19:35,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303407464] [2023-04-01 12:19:35,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303407464] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:19:35,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340867749] [2023-04-01 12:19:35,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:19:35,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:19:35,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:19:35,712 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 12:19:35,719 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 12:19:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:19:35,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-01 12:19:35,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:19:36,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 12:19:36,010 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 12:19:36,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340867749] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:19:36,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 12:19:36,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2023-04-01 12:19:36,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503315107] [2023-04-01 12:19:36,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:19:36,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 12:19:36,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:19:36,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 12:19:36,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-04-01 12:19:36,012 INFO L87 Difference]: Start difference. First operand 237 states and 325 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 12:19:36,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:19:36,213 INFO L93 Difference]: Finished difference Result 653 states and 904 transitions. [2023-04-01 12:19:36,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 12:19:36,214 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 12:19:36,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:19:36,217 INFO L225 Difference]: With dead ends: 653 [2023-04-01 12:19:36,218 INFO L226 Difference]: Without dead ends: 435 [2023-04-01 12:19:36,218 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 12:19:36,219 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 240 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:19:36,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 1161 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:19:36,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-04-01 12:19:36,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 423. [2023-04-01 12:19:36,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 282 states have (on average 1.425531914893617) internal successors, (402), 287 states have internal predecessors, (402), 92 states have call successors, (92), 47 states have call predecessors, (92), 48 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2023-04-01 12:19:36,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 589 transitions. [2023-04-01 12:19:36,262 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 589 transitions. Word has length 69 [2023-04-01 12:19:36,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:19:36,263 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 589 transitions. [2023-04-01 12:19:36,263 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 12:19:36,263 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 589 transitions. [2023-04-01 12:19:36,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-01 12:19:36,265 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:19:36,265 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 12:19:36,273 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 12:19:36,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:19:36,473 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:19:36,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:19:36,473 INFO L85 PathProgramCache]: Analyzing trace with hash -476446519, now seen corresponding path program 1 times [2023-04-01 12:19:36,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:19:36,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677825066] [2023-04-01 12:19:36,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:19:36,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:19:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:19:36,933 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 12:19:36,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:19:36,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677825066] [2023-04-01 12:19:36,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677825066] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:19:36,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005375881] [2023-04-01 12:19:36,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:19:36,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:19:36,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:19:36,936 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 12:19:36,938 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 12:19:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:19:37,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 20 conjunts are in the unsatisfiable core [2023-04-01 12:19:37,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:19:37,942 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 12:19:37,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:19:39,782 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 8191 disjunctions. This might take some time... [2023-04-01 12:19:43,779 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 8191 disjunctions.