/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 OctagonDomain -i ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:31:50,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:31:50,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:31:50,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:31:50,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:31:50,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:31:50,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:31:50,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:31:50,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:31:50,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:31:50,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:31:50,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:31:50,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:31:50,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:31:50,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:31:50,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:31:50,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:31:50,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:31:50,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:31:50,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:31:50,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:31:50,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:31:50,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:31:50,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:31:50,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:31:50,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:31:50,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:31:50,462 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:31:50,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:31:50,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:31:50,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:31:50,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:31:50,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:31:50,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:31:50,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:31:50,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:31:50,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:31:50,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:31:50,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:31:50,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:31:50,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:31:50,469 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 [2023-04-03 01:31:50,500 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:31:50,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:31:50,500 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:31:50,500 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:31:50,501 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:31:50,501 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:31:50,501 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:31:50,502 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:31:50,502 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:31:50,502 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:31:50,502 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:31:50,502 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:31:50,503 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:31:50,503 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:31:50,503 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:31:50,503 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:31:50,503 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:31:50,503 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:31:50,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:31:50,504 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:31:50,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:31:50,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:31:50,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:31:50,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:31:50,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:31:50,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:31:50,505 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:31:50,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:31:50,506 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:31:50,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:31:50,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:31:50,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:31:50,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:31:50,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:31:50,507 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:31:50,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:31:50,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:31:50,507 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:31:50,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:31:50,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:31:50,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:31:50,508 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:31:50,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:31:50,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:31:50,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:31:50,731 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:31:50,732 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:31:50,734 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.BOUNDED-10.pals.c [2023-04-03 01:31:51,933 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:31:52,164 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:31:52,165 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.BOUNDED-10.pals.c [2023-04-03 01:31:52,175 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd1115bf9/6b89845ba45848518dc46139ed9f49af/FLAG457f69711 [2023-04-03 01:31:52,189 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd1115bf9/6b89845ba45848518dc46139ed9f49af [2023-04-03 01:31:52,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:31:52,192 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:31:52,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:31:52,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:31:52,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:31:52,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:31:52" (1/1) ... [2023-04-03 01:31:52,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@415ebbb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:31:52, skipping insertion in model container [2023-04-03 01:31:52,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:31:52" (1/1) ... [2023-04-03 01:31:52,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:31:52,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:31:52,433 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.BOUNDED-10.pals.c[14702,14715] [2023-04-03 01:31:52,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:31:52,449 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:31:52,503 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.BOUNDED-10.pals.c[14702,14715] [2023-04-03 01:31:52,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:31:52,522 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:31:52,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:31:52 WrapperNode [2023-04-03 01:31:52,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:31:52,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:31:52,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:31:52,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:31:52,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:31:52" (1/1) ... [2023-04-03 01:31:52,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:31:52" (1/1) ... [2023-04-03 01:31:52,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:31:52" (1/1) ... [2023-04-03 01:31:52,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:31:52" (1/1) ... [2023-04-03 01:31:52,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:31:52" (1/1) ... [2023-04-03 01:31:52,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:31:52" (1/1) ... [2023-04-03 01:31:52,575 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:31:52" (1/1) ... [2023-04-03 01:31:52,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:31:52" (1/1) ... [2023-04-03 01:31:52,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:31:52,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:31:52,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:31:52,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:31:52,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:31:52" (1/1) ... [2023-04-03 01:31:52,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:31:52,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:31:52,634 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) [2023-04-03 01:31:52,642 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 [2023-04-03 01:31:52,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:31:52,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:31:52,671 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:31:52,671 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 01:31:52,671 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2023-04-03 01:31:52,672 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2023-04-03 01:31:52,672 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2023-04-03 01:31:52,672 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2023-04-03 01:31:52,672 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2023-04-03 01:31:52,672 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2023-04-03 01:31:52,672 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2023-04-03 01:31:52,672 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2023-04-03 01:31:52,672 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-03 01:31:52,673 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2023-04-03 01:31:52,673 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2023-04-03 01:31:52,673 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2023-04-03 01:31:52,673 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2023-04-03 01:31:52,673 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2023-04-03 01:31:52,673 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-03 01:31:52,673 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:31:52,673 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-03 01:31:52,673 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:31:52,674 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:31:52,674 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:31:52,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:31:52,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 01:31:52,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 01:31:52,674 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 01:31:52,674 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 01:31:52,674 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 01:31:52,674 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 01:31:52,674 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2023-04-03 01:31:52,674 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2023-04-03 01:31:52,674 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2023-04-03 01:31:52,674 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2023-04-03 01:31:52,674 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2023-04-03 01:31:52,675 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2023-04-03 01:31:52,675 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2023-04-03 01:31:52,675 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2023-04-03 01:31:52,675 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 01:31:52,675 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2023-04-03 01:31:52,675 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2023-04-03 01:31:52,675 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2023-04-03 01:31:52,675 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2023-04-03 01:31:52,675 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2023-04-03 01:31:52,675 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 01:31:52,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:31:52,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:31:52,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:31:52,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:31:52,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:31:52,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:31:52,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:31:52,785 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:31:52,787 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:31:53,339 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:31:53,472 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:31:53,472 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-03 01:31:53,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:31:53 BoogieIcfgContainer [2023-04-03 01:31:53,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:31:53,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:31:53,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:31:53,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:31:53,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:31:52" (1/3) ... [2023-04-03 01:31:53,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1d0d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:31:53, skipping insertion in model container [2023-04-03 01:31:53,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:31:52" (2/3) ... [2023-04-03 01:31:53,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1d0d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:31:53, skipping insertion in model container [2023-04-03 01:31:53,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:31:53" (3/3) ... [2023-04-03 01:31:53,511 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.4_2.ufo.BOUNDED-10.pals.c [2023-04-03 01:31:53,530 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:31:53,530 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:31:53,591 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:31:53,598 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;@339964d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:31:53,598 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:31:53,602 INFO L276 IsEmpty]: Start isEmpty. Operand has 190 states, 126 states have (on average 1.4682539682539681) internal successors, (185), 127 states have internal predecessors, (185), 43 states have call successors, (43), 19 states have call predecessors, (43), 19 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-04-03 01:31:53,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-04-03 01:31:53,609 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:31:53,610 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] [2023-04-03 01:31:53,611 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:31:53,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:31:53,615 INFO L85 PathProgramCache]: Analyzing trace with hash -327406355, now seen corresponding path program 1 times [2023-04-03 01:31:53,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:31:53,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055548649] [2023-04-03 01:31:53,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:31:53,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:31:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:31:54,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:31:54,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:31:54,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055548649] [2023-04-03 01:31:54,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055548649] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:31:54,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:31:54,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-03 01:31:54,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700388402] [2023-04-03 01:31:54,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:31:54,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-03 01:31:54,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:31:54,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-03 01:31:54,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-03 01:31:54,342 INFO L87 Difference]: Start difference. First operand has 190 states, 126 states have (on average 1.4682539682539681) internal successors, (185), 127 states have internal predecessors, (185), 43 states have call successors, (43), 19 states have call predecessors, (43), 19 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-04-03 01:31:54,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:31:54,504 INFO L93 Difference]: Finished difference Result 373 states and 563 transitions. [2023-04-03 01:31:54,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-03 01:31:54,506 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 [2023-04-03 01:31:54,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:31:54,518 INFO L225 Difference]: With dead ends: 373 [2023-04-03 01:31:54,518 INFO L226 Difference]: Without dead ends: 191 [2023-04-03 01:31:54,524 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 [2023-04-03 01:31:54,527 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 5 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 746 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 [2023-04-03 01:31:54,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 746 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:31:54,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-04-03 01:31:54,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2023-04-03 01:31:54,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 128 states have (on average 1.4453125) internal successors, (185), 128 states have internal predecessors, (185), 43 states have call successors, (43), 20 states have call predecessors, (43), 19 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-04-03 01:31:54,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 270 transitions. [2023-04-03 01:31:54,589 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 270 transitions. Word has length 48 [2023-04-03 01:31:54,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:31:54,590 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 270 transitions. [2023-04-03 01:31:54,590 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) [2023-04-03 01:31:54,590 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 270 transitions. [2023-04-03 01:31:54,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-03 01:31:54,593 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:31:54,593 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] [2023-04-03 01:31:54,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:31:54,594 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:31:54,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:31:54,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1229930792, now seen corresponding path program 1 times [2023-04-03 01:31:54,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:31:54,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922314116] [2023-04-03 01:31:54,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:31:54,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:31:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:31:55,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-03 01:31:55,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:31:55,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922314116] [2023-04-03 01:31:55,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922314116] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:31:55,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990471660] [2023-04-03 01:31:55,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:31:55,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:31:55,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:31:55,541 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) [2023-04-03 01:31:55,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-03 01:31:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:31:55,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-03 01:31:55,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:31:55,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:31:55,968 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 01:31:55,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990471660] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:31:55,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 01:31:55,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 15 [2023-04-03 01:31:55,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452645581] [2023-04-03 01:31:55,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:31:55,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 01:31:55,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:31:55,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 01:31:55,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-04-03 01:31:55,974 INFO L87 Difference]: Start difference. First operand 191 states and 270 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) [2023-04-03 01:31:56,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:31:56,852 INFO L93 Difference]: Finished difference Result 430 states and 607 transitions. [2023-04-03 01:31:56,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-03 01:31:56,853 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 [2023-04-03 01:31:56,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:31:56,863 INFO L225 Difference]: With dead ends: 430 [2023-04-03 01:31:56,863 INFO L226 Difference]: Without dead ends: 250 [2023-04-03 01:31:56,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2023-04-03 01:31:56,869 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 507 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 01:31:56,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 66 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 01:31:56,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-04-03 01:31:56,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 245. [2023-04-03 01:31:56,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 162 states have (on average 1.4382716049382716) internal successors, (233), 164 states have internal predecessors, (233), 54 states have call successors, (54), 29 states have call predecessors, (54), 28 states have return successors, (54), 51 states have call predecessors, (54), 53 states have call successors, (54) [2023-04-03 01:31:56,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 341 transitions. [2023-04-03 01:31:56,914 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 341 transitions. Word has length 66 [2023-04-03 01:31:56,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:31:56,914 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 341 transitions. [2023-04-03 01:31:56,915 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) [2023-04-03 01:31:56,915 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 341 transitions. [2023-04-03 01:31:56,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-03 01:31:56,917 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:31:56,917 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] [2023-04-03 01:31:56,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-03 01:31:57,124 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 [2023-04-03 01:31:57,125 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:31:57,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:31:57,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1539548420, now seen corresponding path program 1 times [2023-04-03 01:31:57,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:31:57,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51550406] [2023-04-03 01:31:57,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:31:57,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:31:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:31:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-03 01:31:57,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:31:57,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51550406] [2023-04-03 01:31:57,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51550406] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:31:57,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120149550] [2023-04-03 01:31:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:31:57,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:31:57,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:31:57,749 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) [2023-04-03 01:31:57,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-03 01:31:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:31:57,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-03 01:31:57,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:31:58,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:31:58,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 01:31:58,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120149550] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:31:58,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 01:31:58,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 15 [2023-04-03 01:31:58,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554719] [2023-04-03 01:31:58,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:31:58,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 01:31:58,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:31:58,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 01:31:58,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-04-03 01:31:58,109 INFO L87 Difference]: Start difference. First operand 245 states and 341 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) [2023-04-03 01:31:58,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:31:58,838 INFO L93 Difference]: Finished difference Result 432 states and 609 transitions. [2023-04-03 01:31:58,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-03 01:31:58,838 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 [2023-04-03 01:31:58,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:31:58,840 INFO L225 Difference]: With dead ends: 432 [2023-04-03 01:31:58,841 INFO L226 Difference]: Without dead ends: 249 [2023-04-03 01:31:58,841 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 [2023-04-03 01:31:58,842 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 496 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 01:31:58,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 74 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 01:31:58,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-04-03 01:31:58,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 245. [2023-04-03 01:31:58,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 162 states have (on average 1.4382716049382716) internal successors, (233), 164 states have internal predecessors, (233), 54 states have call successors, (54), 29 states have call predecessors, (54), 28 states have return successors, (54), 51 states have call predecessors, (54), 53 states have call successors, (54) [2023-04-03 01:31:58,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 341 transitions. [2023-04-03 01:31:58,869 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 341 transitions. Word has length 67 [2023-04-03 01:31:58,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:31:58,869 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 341 transitions. [2023-04-03 01:31:58,869 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) [2023-04-03 01:31:58,869 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 341 transitions. [2023-04-03 01:31:58,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-03 01:31:58,871 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:31:58,871 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] [2023-04-03 01:31:58,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-03 01:31:59,079 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 [2023-04-03 01:31:59,080 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:31:59,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:31:59,080 INFO L85 PathProgramCache]: Analyzing trace with hash -377193149, now seen corresponding path program 1 times [2023-04-03 01:31:59,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:31:59,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293899094] [2023-04-03 01:31:59,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:31:59,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:31:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:31:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-03 01:31:59,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:31:59,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293899094] [2023-04-03 01:31:59,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293899094] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:31:59,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530137639] [2023-04-03 01:31:59,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:31:59,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:31:59,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:31:59,717 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) [2023-04-03 01:31:59,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-03 01:31:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:31:59,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-03 01:31:59,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:32:00,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-03 01:32:00,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 01:32:00,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530137639] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:32:00,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 01:32:00,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2023-04-03 01:32:00,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246857559] [2023-04-03 01:32:00,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:32:00,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-03 01:32:00,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:32:00,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-03 01:32:00,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-04-03 01:32:00,108 INFO L87 Difference]: Start difference. First operand 245 states and 341 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) [2023-04-03 01:32:00,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:32:00,431 INFO L93 Difference]: Finished difference Result 664 states and 927 transitions. [2023-04-03 01:32:00,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-03 01:32:00,431 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 [2023-04-03 01:32:00,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:32:00,434 INFO L225 Difference]: With dead ends: 664 [2023-04-03 01:32:00,434 INFO L226 Difference]: Without dead ends: 443 [2023-04-03 01:32:00,436 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 [2023-04-03 01:32:00,436 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 241 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 01:32:00,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 1363 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 01:32:00,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-04-03 01:32:00,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 430. [2023-04-03 01:32:00,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 287 states have (on average 1.4390243902439024) internal successors, (413), 292 states have internal predecessors, (413), 94 states have call successors, (94), 47 states have call predecessors, (94), 48 states have return successors, (97), 90 states have call predecessors, (97), 93 states have call successors, (97) [2023-04-03 01:32:00,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 604 transitions. [2023-04-03 01:32:00,480 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 604 transitions. Word has length 69 [2023-04-03 01:32:00,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:32:00,481 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 604 transitions. [2023-04-03 01:32:00,481 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) [2023-04-03 01:32:00,481 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 604 transitions. [2023-04-03 01:32:00,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 01:32:00,487 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:32:00,487 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] [2023-04-03 01:32:00,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-03 01:32:00,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:32:00,696 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:32:00,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:32:00,696 INFO L85 PathProgramCache]: Analyzing trace with hash 482839559, now seen corresponding path program 1 times [2023-04-03 01:32:00,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:32:00,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186391257] [2023-04-03 01:32:00,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:32:00,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:32:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:32:01,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-03 01:32:01,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:32:01,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186391257] [2023-04-03 01:32:01,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186391257] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:32:01,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362627009] [2023-04-03 01:32:01,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:32:01,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:32:01,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:32:01,302 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) [2023-04-03 01:32:01,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-03 01:32:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:32:01,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 20 conjunts are in the unsatisfiable core [2023-04-03 01:32:01,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:32:02,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-03 01:32:02,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:32:04,878 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 8191 disjunctions. This might take some time... [2023-04-03 01:32:08,757 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 8191 disjunctions.