/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.5.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 00:09:08,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 00:09:08,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 00:09:08,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 00:09:08,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 00:09:08,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 00:09:08,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 00:09:08,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 00:09:08,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 00:09:08,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 00:09:08,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 00:09:08,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 00:09:08,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 00:09:08,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 00:09:08,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 00:09:08,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 00:09:08,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 00:09:08,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 00:09:08,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 00:09:08,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 00:09:08,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 00:09:08,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 00:09:08,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 00:09:08,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 00:09:08,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 00:09:08,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 00:09:08,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 00:09:08,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 00:09:08,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 00:09:08,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 00:09:08,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 00:09:08,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 00:09:08,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 00:09:08,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 00:09:08,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 00:09:08,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 00:09:08,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 00:09:08,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 00:09:08,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 00:09:08,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 00:09:08,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 00:09:08,518 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 00:09:08,559 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 00:09:08,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 00:09:08,560 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 00:09:08,560 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 00:09:08,560 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 00:09:08,560 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 00:09:08,561 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 00:09:08,561 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 00:09:08,561 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 00:09:08,561 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 00:09:08,571 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 00:09:08,571 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 00:09:08,572 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 00:09:08,572 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 00:09:08,572 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 00:09:08,572 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 00:09:08,572 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 00:09:08,572 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 00:09:08,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 00:09:08,573 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 00:09:08,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 00:09:08,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 00:09:08,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 00:09:08,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 00:09:08,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 00:09:08,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 00:09:08,574 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 00:09:08,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 00:09:08,574 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 00:09:08,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 00:09:08,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 00:09:08,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 00:09:08,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:09:08,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 00:09:08,575 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 00:09:08,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 00:09:08,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 00:09:08,575 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 00:09:08,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 00:09:08,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 00:09:08,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 00:09:08,575 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-04-01 00:09:09,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 00:09:09,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 00:09:09,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 00:09:09,032 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 00:09:09,045 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 00:09:09,046 INFO L432 ainManager$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 00:09:10,839 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 00:09:11,259 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 00:09:11,259 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 00:09:11,270 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55b0c0f16/e1cbe79a828e4a10b81e2daba001261d/FLAG0d7f6c7c0 [2023-04-01 00:09:11,299 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55b0c0f16/e1cbe79a828e4a10b81e2daba001261d [2023-04-01 00:09:11,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 00:09:11,320 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 00:09:11,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 00:09:11,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 00:09:11,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 00:09:11,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:09:11" (1/1) ... [2023-04-01 00:09:11,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a7ecf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:11, skipping insertion in model container [2023-04-01 00:09:11,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:09:11" (1/1) ... [2023-04-01 00:09:11,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 00:09:11,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 00:09:11,799 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 00:09:11,809 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:09:11,826 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 00:09:11,935 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 00:09:11,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:09:11,969 INFO L208 MainTranslator]: Completed translation [2023-04-01 00:09:11,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:11 WrapperNode [2023-04-01 00:09:11,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 00:09:11,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 00:09:11,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 00:09:11,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 00:09:12,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:11" (1/1) ... [2023-04-01 00:09:12,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:11" (1/1) ... [2023-04-01 00:09:12,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:11" (1/1) ... [2023-04-01 00:09:12,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:11" (1/1) ... [2023-04-01 00:09:12,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:11" (1/1) ... [2023-04-01 00:09:12,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:11" (1/1) ... [2023-04-01 00:09:12,095 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:11" (1/1) ... [2023-04-01 00:09:12,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:11" (1/1) ... [2023-04-01 00:09:12,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 00:09:12,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 00:09:12,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 00:09:12,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 00:09:12,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:11" (1/1) ... [2023-04-01 00:09:12,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:09:12,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:09:12,193 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 00:09:12,225 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 00:09:12,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 00:09:12,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 00:09:12,232 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 00:09:12,233 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 00:09:12,233 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2023-04-01 00:09:12,233 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2023-04-01 00:09:12,233 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2023-04-01 00:09:12,233 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2023-04-01 00:09:12,233 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2023-04-01 00:09:12,234 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2023-04-01 00:09:12,234 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2023-04-01 00:09:12,234 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2023-04-01 00:09:12,234 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-01 00:09:12,234 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2023-04-01 00:09:12,234 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2023-04-01 00:09:12,234 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2023-04-01 00:09:12,234 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2023-04-01 00:09:12,234 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2023-04-01 00:09:12,234 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-01 00:09:12,234 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 00:09:12,235 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-01 00:09:12,235 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 00:09:12,235 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 00:09:12,235 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 00:09:12,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 00:09:12,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 00:09:12,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 00:09:12,235 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 00:09:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 00:09:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 00:09:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 00:09:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2023-04-01 00:09:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2023-04-01 00:09:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2023-04-01 00:09:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2023-04-01 00:09:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2023-04-01 00:09:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2023-04-01 00:09:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2023-04-01 00:09:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2023-04-01 00:09:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 00:09:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2023-04-01 00:09:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2023-04-01 00:09:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2023-04-01 00:09:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2023-04-01 00:09:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2023-04-01 00:09:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 00:09:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 00:09:12,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 00:09:12,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 00:09:12,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 00:09:12,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 00:09:12,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 00:09:12,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 00:09:12,458 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 00:09:12,460 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 00:09:13,412 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 00:09:13,558 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 00:09:13,558 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 00:09:13,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:09:13 BoogieIcfgContainer [2023-04-01 00:09:13,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 00:09:13,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 00:09:13,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 00:09:13,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 00:09:13,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:09:11" (1/3) ... [2023-04-01 00:09:13,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24cd8ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:09:13, skipping insertion in model container [2023-04-01 00:09:13,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:11" (2/3) ... [2023-04-01 00:09:13,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24cd8ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:09:13, skipping insertion in model container [2023-04-01 00:09:13,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:09:13" (3/3) ... [2023-04-01 00:09:13,570 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2023-04-01 00:09:13,585 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 00:09:13,585 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 00:09:13,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 00:09:13,655 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;@40acf05f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 00:09:13,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 00:09:13,662 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 00:09:13,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-04-01 00:09:13,670 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:09:13,671 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 00:09:13,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:09:13,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:09:13,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1164710770, now seen corresponding path program 1 times [2023-04-01 00:09:13,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:09:13,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730349583] [2023-04-01 00:09:13,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:13,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:09:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:14,748 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 00:09:14,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:09:14,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730349583] [2023-04-01 00:09:14,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730349583] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:09:14,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:09:14,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 00:09:14,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278009973] [2023-04-01 00:09:14,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:09:14,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 00:09:14,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:09:14,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 00:09:14,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 00:09:14,837 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 00:09:15,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:09:15,098 INFO L93 Difference]: Finished difference Result 360 states and 543 transitions. [2023-04-01 00:09:15,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 00:09:15,100 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 00:09:15,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:09:15,112 INFO L225 Difference]: With dead ends: 360 [2023-04-01 00:09:15,113 INFO L226 Difference]: Without dead ends: 186 [2023-04-01 00:09:15,117 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 00:09:15,120 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 5 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:09:15,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 710 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:09:15,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-04-01 00:09:15,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2023-04-01 00:09:15,172 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 00:09:15,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 261 transitions. [2023-04-01 00:09:15,196 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 261 transitions. Word has length 48 [2023-04-01 00:09:15,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:09:15,197 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 261 transitions. [2023-04-01 00:09:15,197 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 00:09:15,198 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 261 transitions. [2023-04-01 00:09:15,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-01 00:09:15,203 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:09:15,212 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 00:09:15,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 00:09:15,216 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:09:15,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:09:15,222 INFO L85 PathProgramCache]: Analyzing trace with hash -2107247100, now seen corresponding path program 1 times [2023-04-01 00:09:15,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:09:15,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954860406] [2023-04-01 00:09:15,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:15,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:09:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:16,576 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 00:09:16,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:09:16,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954860406] [2023-04-01 00:09:16,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954860406] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 00:09:16,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999786538] [2023-04-01 00:09:16,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:16,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 00:09:16,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:09:16,593 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 00:09:16,645 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 00:09:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:16,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 00:09:16,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 00:09:17,177 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 00:09:17,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 00:09:17,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999786538] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:09:17,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 00:09:17,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 15 [2023-04-01 00:09:17,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755602835] [2023-04-01 00:09:17,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:09:17,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 00:09:17,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:09:17,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 00:09:17,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-04-01 00:09:17,187 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 00:09:18,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:09:18,211 INFO L93 Difference]: Finished difference Result 416 states and 581 transitions. [2023-04-01 00:09:18,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 00:09:18,212 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 00:09:18,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:09:18,229 INFO L225 Difference]: With dead ends: 416 [2023-04-01 00:09:18,229 INFO L226 Difference]: Without dead ends: 241 [2023-04-01 00:09:18,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2023-04-01 00:09:18,232 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 476 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 00:09:18,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 61 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 00:09:18,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-04-01 00:09:18,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 236. [2023-04-01 00:09:18,289 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 00:09:18,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 324 transitions. [2023-04-01 00:09:18,300 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 324 transitions. Word has length 66 [2023-04-01 00:09:18,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:09:18,301 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 324 transitions. [2023-04-01 00:09:18,301 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 00:09:18,302 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 324 transitions. [2023-04-01 00:09:18,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-01 00:09:18,308 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:09:18,308 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 00:09:18,320 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 00:09:18,520 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 00:09:18,521 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:09:18,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:09:18,521 INFO L85 PathProgramCache]: Analyzing trace with hash 269142149, now seen corresponding path program 1 times [2023-04-01 00:09:18,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:09:18,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695438470] [2023-04-01 00:09:18,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:18,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:09:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:19,584 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 00:09:19,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:09:19,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695438470] [2023-04-01 00:09:19,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695438470] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 00:09:19,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781350627] [2023-04-01 00:09:19,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:19,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 00:09:19,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:09:19,591 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 00:09:19,594 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 00:09:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:19,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 00:09:19,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 00:09:20,018 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 00:09:20,018 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 00:09:20,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781350627] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:09:20,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 00:09:20,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 15 [2023-04-01 00:09:20,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410569251] [2023-04-01 00:09:20,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:09:20,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 00:09:20,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:09:20,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 00:09:20,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-04-01 00:09:20,021 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 00:09:21,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:09:21,033 INFO L93 Difference]: Finished difference Result 418 states and 583 transitions. [2023-04-01 00:09:21,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 00:09:21,034 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 00:09:21,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:09:21,039 INFO L225 Difference]: With dead ends: 418 [2023-04-01 00:09:21,039 INFO L226 Difference]: Without dead ends: 240 [2023-04-01 00:09:21,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-04-01 00:09:21,042 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 465 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 00:09:21,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 69 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 00:09:21,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-04-01 00:09:21,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 236. [2023-04-01 00:09:21,063 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 00:09:21,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 324 transitions. [2023-04-01 00:09:21,067 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 324 transitions. Word has length 67 [2023-04-01 00:09:21,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:09:21,068 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 324 transitions. [2023-04-01 00:09:21,068 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 00:09:21,069 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 324 transitions. [2023-04-01 00:09:21,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-01 00:09:21,070 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:09:21,070 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 00:09:21,081 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 00:09:21,278 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 00:09:21,279 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:09:21,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:09:21,280 INFO L85 PathProgramCache]: Analyzing trace with hash -418162614, now seen corresponding path program 1 times [2023-04-01 00:09:21,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:09:21,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654763277] [2023-04-01 00:09:21,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:21,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:09:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:21,497 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 00:09:21,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:09:21,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654763277] [2023-04-01 00:09:21,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654763277] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:09:21,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:09:21,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 00:09:21,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571324853] [2023-04-01 00:09:21,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:09:21,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 00:09:21,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:09:21,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 00:09:21,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:09:21,509 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 00:09:22,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:09:22,603 INFO L93 Difference]: Finished difference Result 419 states and 584 transitions. [2023-04-01 00:09:22,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 00:09:22,617 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 00:09:22,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:09:22,620 INFO L225 Difference]: With dead ends: 419 [2023-04-01 00:09:22,620 INFO L226 Difference]: Without dead ends: 241 [2023-04-01 00:09:22,621 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 00:09:22,622 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 478 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 00:09:22,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 64 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 00:09:22,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-04-01 00:09:22,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 237. [2023-04-01 00:09:22,665 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 00:09:22,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 325 transitions. [2023-04-01 00:09:22,681 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 325 transitions. Word has length 69 [2023-04-01 00:09:22,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:09:22,682 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 325 transitions. [2023-04-01 00:09:22,682 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 00:09:22,682 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 325 transitions. [2023-04-01 00:09:22,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-01 00:09:22,684 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:09:22,684 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 00:09:22,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 00:09:22,685 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:09:22,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:09:22,685 INFO L85 PathProgramCache]: Analyzing trace with hash -539467867, now seen corresponding path program 1 times [2023-04-01 00:09:22,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:09:22,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313082685] [2023-04-01 00:09:22,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:22,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:09:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:23,815 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 00:09:23,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:09:23,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313082685] [2023-04-01 00:09:23,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313082685] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 00:09:23,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128936235] [2023-04-01 00:09:23,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:23,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 00:09:23,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:09:23,817 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 00:09:23,859 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 00:09:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:24,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-01 00:09:24,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 00:09:24,463 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 00:09:24,463 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 00:09:24,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128936235] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:09:24,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 00:09:24,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2023-04-01 00:09:24,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278569257] [2023-04-01 00:09:24,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:09:24,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 00:09:24,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:09:24,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 00:09:24,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-04-01 00:09:24,466 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 00:09:24,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:09:24,784 INFO L93 Difference]: Finished difference Result 653 states and 904 transitions. [2023-04-01 00:09:24,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 00:09:24,784 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 00:09:24,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:09:24,789 INFO L225 Difference]: With dead ends: 653 [2023-04-01 00:09:24,789 INFO L226 Difference]: Without dead ends: 435 [2023-04-01 00:09:24,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-04-01 00:09:24,792 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 240 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:09:24,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 1161 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:09:24,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-04-01 00:09:24,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 423. [2023-04-01 00:09:24,861 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 00:09:24,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 589 transitions. [2023-04-01 00:09:24,864 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 589 transitions. Word has length 69 [2023-04-01 00:09:24,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:09:24,865 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 589 transitions. [2023-04-01 00:09:24,865 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 00:09:24,866 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 589 transitions. [2023-04-01 00:09:24,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-01 00:09:24,866 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:09:24,866 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 00:09:24,877 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 00:09:25,074 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 00:09:25,075 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:09:25,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:09:25,075 INFO L85 PathProgramCache]: Analyzing trace with hash -476446519, now seen corresponding path program 1 times [2023-04-01 00:09:25,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:09:25,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222917177] [2023-04-01 00:09:25,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:25,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:09:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:26,447 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 00:09:26,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:09:26,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222917177] [2023-04-01 00:09:26,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222917177] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 00:09:26,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062680036] [2023-04-01 00:09:26,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:09:26,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 00:09:26,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:09:26,450 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 00:09:26,494 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 00:09:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:09:26,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 20 conjunts are in the unsatisfiable core [2023-04-01 00:09:26,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 00:09:28,518 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 00:09:28,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 00:09:31,862 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 8191 disjunctions. This might take some time... [2023-04-01 00:09:37,425 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 8191 disjunctions.