/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-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 02:37:29,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 02:37:29,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 02:37:29,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 02:37:29,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 02:37:29,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 02:37:29,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 02:37:29,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 02:37:29,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 02:37:29,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 02:37:29,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 02:37:29,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 02:37:29,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 02:37:29,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 02:37:29,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 02:37:29,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 02:37:29,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 02:37:29,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 02:37:29,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 02:37:29,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 02:37:29,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 02:37:29,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 02:37:29,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 02:37:29,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 02:37:29,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 02:37:29,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 02:37:29,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 02:37:29,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 02:37:29,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 02:37:29,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 02:37:29,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 02:37:29,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 02:37:29,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 02:37:29,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 02:37:29,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 02:37:29,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 02:37:29,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 02:37:29,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 02:37:29,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 02:37:29,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 02:37:29,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 02:37:29,365 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 02:37:29,390 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 02:37:29,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 02:37:29,390 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 02:37:29,390 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 02:37:29,390 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 02:37:29,391 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 02:37:29,391 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 02:37:29,391 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 02:37:29,391 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 02:37:29,391 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 02:37:29,391 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 02:37:29,391 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 02:37:29,391 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 02:37:29,391 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 02:37:29,391 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 02:37:29,391 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 02:37:29,391 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 02:37:29,392 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 02:37:29,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 02:37:29,392 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 02:37:29,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 02:37:29,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 02:37:29,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 02:37:29,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 02:37:29,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 02:37:29,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 02:37:29,393 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 02:37:29,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 02:37:29,394 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 02:37:29,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 02:37:29,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 02:37:29,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 02:37:29,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 02:37:29,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 02:37:29,395 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 02:37:29,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 02:37:29,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 02:37:29,395 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 02:37:29,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 02:37:29,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 02:37:29,395 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 02:37:29,396 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 02:37:29,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 02:37:29,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 02:37:29,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 02:37:29,562 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 02:37:29,563 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 02:37:29,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-04-03 02:37:30,524 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 02:37:30,804 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 02:37:30,805 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-04-03 02:37:30,823 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c05da350/fbb43126162c4528b61eb9492edec545/FLAG6d18ca8ac [2023-04-03 02:37:30,835 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c05da350/fbb43126162c4528b61eb9492edec545 [2023-04-03 02:37:30,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 02:37:30,838 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 02:37:30,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 02:37:30,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 02:37:30,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 02:37:30,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 02:37:30" (1/1) ... [2023-04-03 02:37:30,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b8d2885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:37:30, skipping insertion in model container [2023-04-03 02:37:30,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 02:37:30" (1/1) ... [2023-04-03 02:37:30,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 02:37:30,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 02:37:31,155 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-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12460,12473] [2023-04-03 02:37:31,179 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-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19746,19759] [2023-04-03 02:37:31,187 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-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22098,22111] [2023-04-03 02:37:31,191 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-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23218,23231] [2023-04-03 02:37:31,203 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-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26768,26781] [2023-04-03 02:37:31,207 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-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27891,27904] [2023-04-03 02:37:31,215 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-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30206,30219] [2023-04-03 02:37:31,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 02:37:31,512 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 02:37:31,551 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-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12460,12473] [2023-04-03 02:37:31,560 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-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19746,19759] [2023-04-03 02:37:31,566 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-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22098,22111] [2023-04-03 02:37:31,568 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-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23218,23231] [2023-04-03 02:37:31,573 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-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26768,26781] [2023-04-03 02:37:31,576 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-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27891,27904] [2023-04-03 02:37:31,580 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-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30206,30219] [2023-04-03 02:37:31,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 02:37:31,758 INFO L208 MainTranslator]: Completed translation [2023-04-03 02:37:31,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:37:31 WrapperNode [2023-04-03 02:37:31,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 02:37:31,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 02:37:31,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 02:37:31,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 02:37:31,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:37:31" (1/1) ... [2023-04-03 02:37:31,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:37:31" (1/1) ... [2023-04-03 02:37:31,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:37:31" (1/1) ... [2023-04-03 02:37:31,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:37:31" (1/1) ... [2023-04-03 02:37:31,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:37:31" (1/1) ... [2023-04-03 02:37:31,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:37:31" (1/1) ... [2023-04-03 02:37:31,911 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:37:31" (1/1) ... [2023-04-03 02:37:31,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:37:31" (1/1) ... [2023-04-03 02:37:31,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 02:37:31,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 02:37:31,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 02:37:31,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 02:37:31,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:37:31" (1/1) ... [2023-04-03 02:37:31,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 02:37:31,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 02:37:31,965 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 02:37:31,983 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 02:37:31,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 02:37:31,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 02:37:31,993 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 02:37:31,993 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 02:37:31,993 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 02:37:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 02:37:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 02:37:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 02:37:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 02:37:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 02:37:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 02:37:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 02:37:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 02:37:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 02:37:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 02:37:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 02:37:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 02:37:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 02:37:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 02:37:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 02:37:31,995 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 02:37:31,995 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 02:37:31,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 02:37:31,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 02:37:31,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 02:37:31,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 02:37:31,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 02:37:31,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 02:37:32,265 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 02:37:32,266 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 02:37:34,182 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 02:37:34,349 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 02:37:34,349 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 02:37:34,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 02:37:34 BoogieIcfgContainer [2023-04-03 02:37:34,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 02:37:34,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 02:37:34,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 02:37:34,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 02:37:34,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 02:37:30" (1/3) ... [2023-04-03 02:37:34,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18436416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 02:37:34, skipping insertion in model container [2023-04-03 02:37:34,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:37:31" (2/3) ... [2023-04-03 02:37:34,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18436416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 02:37:34, skipping insertion in model container [2023-04-03 02:37:34,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 02:37:34" (3/3) ... [2023-04-03 02:37:34,357 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-04-03 02:37:34,369 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 02:37:34,370 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-04-03 02:37:34,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 02:37:34,416 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;@55da34e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 02:37:34,416 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-04-03 02:37:34,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 1065 states, 1053 states have (on average 1.8907882241215574) internal successors, (1991), 1060 states have internal predecessors, (1991), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-03 02:37:34,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-03 02:37:34,437 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:37:34,438 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:37:34,438 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:37:34,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:37:34,442 INFO L85 PathProgramCache]: Analyzing trace with hash -990909763, now seen corresponding path program 1 times [2023-04-03 02:37:34,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:37:34,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713651632] [2023-04-03 02:37:34,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:37:34,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:37:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:37:35,022 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 02:37:35,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:37:35,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713651632] [2023-04-03 02:37:35,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713651632] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:37:35,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:37:35,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:37:35,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196847541] [2023-04-03 02:37:35,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:37:35,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:37:35,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:37:35,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:37:35,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:37:35,064 INFO L87 Difference]: Start difference. First operand has 1065 states, 1053 states have (on average 1.8907882241215574) internal successors, (1991), 1060 states have internal predecessors, (1991), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:35,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:37:35,749 INFO L93 Difference]: Finished difference Result 1675 states and 3059 transitions. [2023-04-03 02:37:35,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:37:35,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2023-04-03 02:37:35,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:37:35,761 INFO L225 Difference]: With dead ends: 1675 [2023-04-03 02:37:35,761 INFO L226 Difference]: Without dead ends: 926 [2023-04-03 02:37:35,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:37:35,768 INFO L413 NwaCegarLoop]: 1022 mSDtfsCounter, 4638 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4638 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 02:37:35,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4638 Valid, 1187 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 02:37:35,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2023-04-03 02:37:35,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 918. [2023-04-03 02:37:35,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 908 states have (on average 1.303964757709251) internal successors, (1184), 914 states have internal predecessors, (1184), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:35,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1187 transitions. [2023-04-03 02:37:35,826 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1187 transitions. Word has length 67 [2023-04-03 02:37:35,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:37:35,826 INFO L495 AbstractCegarLoop]: Abstraction has 918 states and 1187 transitions. [2023-04-03 02:37:35,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:35,826 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1187 transitions. [2023-04-03 02:37:35,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-03 02:37:35,828 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:37:35,829 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:37:35,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 02:37:35,829 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:37:35,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:37:35,829 INFO L85 PathProgramCache]: Analyzing trace with hash -385426605, now seen corresponding path program 1 times [2023-04-03 02:37:35,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:37:35,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719343572] [2023-04-03 02:37:35,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:37:35,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:37:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:37:36,076 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 02:37:36,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:37:36,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719343572] [2023-04-03 02:37:36,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719343572] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:37:36,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:37:36,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:37:36,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747618204] [2023-04-03 02:37:36,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:37:36,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:37:36,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:37:36,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:37:36,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:37:36,087 INFO L87 Difference]: Start difference. First operand 918 states and 1187 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:36,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:37:36,532 INFO L93 Difference]: Finished difference Result 1503 states and 1967 transitions. [2023-04-03 02:37:36,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:37:36,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-03 02:37:36,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:37:36,535 INFO L225 Difference]: With dead ends: 1503 [2023-04-03 02:37:36,535 INFO L226 Difference]: Without dead ends: 1012 [2023-04-03 02:37:36,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:37:36,537 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 2803 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2803 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 02:37:36,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2803 Valid, 611 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 02:37:36,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2023-04-03 02:37:36,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1004. [2023-04-03 02:37:36,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 994 states have (on average 1.2857142857142858) internal successors, (1278), 1000 states have internal predecessors, (1278), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:36,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1281 transitions. [2023-04-03 02:37:36,565 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1281 transitions. Word has length 68 [2023-04-03 02:37:36,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:37:36,565 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1281 transitions. [2023-04-03 02:37:36,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:36,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1281 transitions. [2023-04-03 02:37:36,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-03 02:37:36,567 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:37:36,567 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:37:36,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 02:37:36,567 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:37:36,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:37:36,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1878986256, now seen corresponding path program 1 times [2023-04-03 02:37:36,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:37:36,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416078448] [2023-04-03 02:37:36,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:37:36,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:37:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:37:36,660 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 02:37:36,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:37:36,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416078448] [2023-04-03 02:37:36,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416078448] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:37:36,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:37:36,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:37:36,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467751691] [2023-04-03 02:37:36,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:37:36,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:37:36,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:37:36,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:37:36,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:37:36,662 INFO L87 Difference]: Start difference. First operand 1004 states and 1281 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:36,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:37:36,797 INFO L93 Difference]: Finished difference Result 1693 states and 2253 transitions. [2023-04-03 02:37:36,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:37:36,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-03 02:37:36,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:37:36,802 INFO L225 Difference]: With dead ends: 1693 [2023-04-03 02:37:36,802 INFO L226 Difference]: Without dead ends: 1354 [2023-04-03 02:37:36,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:37:36,803 INFO L413 NwaCegarLoop]: 873 mSDtfsCounter, 470 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:37:36,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1414 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:37:36,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2023-04-03 02:37:36,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1346. [2023-04-03 02:37:36,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1336 states have (on average 1.3173652694610778) internal successors, (1760), 1342 states have internal predecessors, (1760), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:36,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 1763 transitions. [2023-04-03 02:37:36,881 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 1763 transitions. Word has length 68 [2023-04-03 02:37:36,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:37:36,881 INFO L495 AbstractCegarLoop]: Abstraction has 1346 states and 1763 transitions. [2023-04-03 02:37:36,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:36,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 1763 transitions. [2023-04-03 02:37:36,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-03 02:37:36,884 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:37:36,884 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:37:36,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 02:37:36,884 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:37:36,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:37:36,891 INFO L85 PathProgramCache]: Analyzing trace with hash -2144479579, now seen corresponding path program 1 times [2023-04-03 02:37:36,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:37:36,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812286357] [2023-04-03 02:37:36,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:37:36,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:37:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:37:37,023 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 02:37:37,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:37:37,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812286357] [2023-04-03 02:37:37,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812286357] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:37:37,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:37:37,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:37:37,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454530317] [2023-04-03 02:37:37,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:37:37,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:37:37,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:37:37,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:37:37,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:37:37,026 INFO L87 Difference]: Start difference. First operand 1346 states and 1763 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:37,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:37:37,161 INFO L93 Difference]: Finished difference Result 2688 states and 3628 transitions. [2023-04-03 02:37:37,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:37:37,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-03 02:37:37,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:37:37,167 INFO L225 Difference]: With dead ends: 2688 [2023-04-03 02:37:37,168 INFO L226 Difference]: Without dead ends: 1951 [2023-04-03 02:37:37,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:37:37,170 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 452 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:37:37,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 1464 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 02:37:37,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2023-04-03 02:37:37,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 1943. [2023-04-03 02:37:37,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1943 states, 1933 states have (on average 1.3331608898085876) internal successors, (2577), 1939 states have internal predecessors, (2577), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:37,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 2580 transitions. [2023-04-03 02:37:37,260 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 2580 transitions. Word has length 68 [2023-04-03 02:37:37,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:37:37,260 INFO L495 AbstractCegarLoop]: Abstraction has 1943 states and 2580 transitions. [2023-04-03 02:37:37,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:37,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 2580 transitions. [2023-04-03 02:37:37,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-03 02:37:37,263 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:37:37,263 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:37:37,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 02:37:37,263 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:37:37,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:37:37,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1717073860, now seen corresponding path program 1 times [2023-04-03 02:37:37,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:37:37,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199789047] [2023-04-03 02:37:37,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:37:37,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:37:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:37:37,382 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 02:37:37,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:37:37,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199789047] [2023-04-03 02:37:37,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199789047] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:37:37,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:37:37,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:37:37,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948175828] [2023-04-03 02:37:37,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:37:37,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:37:37,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:37:37,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:37:37,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:37:37,384 INFO L87 Difference]: Start difference. First operand 1943 states and 2580 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:37,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:37:37,579 INFO L93 Difference]: Finished difference Result 4258 states and 5762 transitions. [2023-04-03 02:37:37,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:37:37,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-03 02:37:37,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:37:37,588 INFO L225 Difference]: With dead ends: 4258 [2023-04-03 02:37:37,588 INFO L226 Difference]: Without dead ends: 3085 [2023-04-03 02:37:37,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:37:37,591 INFO L413 NwaCegarLoop]: 1150 mSDtfsCounter, 723 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:37:37,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 1728 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 02:37:37,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3085 states. [2023-04-03 02:37:37,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3085 to 3077. [2023-04-03 02:37:37,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3077 states, 3067 states have (on average 1.3338767525268993) internal successors, (4091), 3073 states have internal predecessors, (4091), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:37,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 4094 transitions. [2023-04-03 02:37:37,811 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 4094 transitions. Word has length 68 [2023-04-03 02:37:37,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:37:37,811 INFO L495 AbstractCegarLoop]: Abstraction has 3077 states and 4094 transitions. [2023-04-03 02:37:37,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:37,811 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 4094 transitions. [2023-04-03 02:37:37,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-03 02:37:37,814 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:37:37,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:37:37,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 02:37:37,815 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:37:37,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:37:37,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2013950252, now seen corresponding path program 1 times [2023-04-03 02:37:37,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:37:37,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676104559] [2023-04-03 02:37:37,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:37:37,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:37:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:37:37,959 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 02:37:37,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:37:37,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676104559] [2023-04-03 02:37:37,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676104559] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:37:37,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:37:37,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:37:37,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167401660] [2023-04-03 02:37:37,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:37:37,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:37:37,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:37:37,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:37:37,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:37:37,961 INFO L87 Difference]: Start difference. First operand 3077 states and 4094 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:38,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:37:38,605 INFO L93 Difference]: Finished difference Result 7224 states and 9809 transitions. [2023-04-03 02:37:38,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:37:38,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-03 02:37:38,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:37:38,618 INFO L225 Difference]: With dead ends: 7224 [2023-04-03 02:37:38,618 INFO L226 Difference]: Without dead ends: 4586 [2023-04-03 02:37:38,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:37:38,623 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 2487 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2487 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 02:37:38,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2487 Valid, 585 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 02:37:38,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2023-04-03 02:37:38,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 4578. [2023-04-03 02:37:38,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4568 states have (on average 1.3526707530647986) internal successors, (6179), 4574 states have internal predecessors, (6179), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:38,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 6182 transitions. [2023-04-03 02:37:38,932 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 6182 transitions. Word has length 68 [2023-04-03 02:37:38,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:37:38,933 INFO L495 AbstractCegarLoop]: Abstraction has 4578 states and 6182 transitions. [2023-04-03 02:37:38,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:38,933 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 6182 transitions. [2023-04-03 02:37:38,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-03 02:37:38,936 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:37:38,936 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:37:38,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 02:37:38,936 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:37:38,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:37:38,937 INFO L85 PathProgramCache]: Analyzing trace with hash 593424523, now seen corresponding path program 1 times [2023-04-03 02:37:38,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:37:38,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874109953] [2023-04-03 02:37:38,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:37:38,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:37:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:37:39,083 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 02:37:39,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:37:39,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874109953] [2023-04-03 02:37:39,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874109953] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:37:39,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:37:39,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:37:39,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724998206] [2023-04-03 02:37:39,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:37:39,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:37:39,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:37:39,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:37:39,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:37:39,086 INFO L87 Difference]: Start difference. First operand 4578 states and 6182 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:39,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:37:39,985 INFO L93 Difference]: Finished difference Result 12195 states and 16676 transitions. [2023-04-03 02:37:39,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:37:39,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-03 02:37:39,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:37:40,006 INFO L225 Difference]: With dead ends: 12195 [2023-04-03 02:37:40,007 INFO L226 Difference]: Without dead ends: 7843 [2023-04-03 02:37:40,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:37:40,013 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 2056 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2056 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 02:37:40,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2056 Valid, 531 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 02:37:40,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7843 states. [2023-04-03 02:37:40,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7843 to 7835. [2023-04-03 02:37:40,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7835 states, 7825 states have (on average 1.35629392971246) internal successors, (10613), 7831 states have internal predecessors, (10613), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:40,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7835 states to 7835 states and 10616 transitions. [2023-04-03 02:37:40,586 INFO L78 Accepts]: Start accepts. Automaton has 7835 states and 10616 transitions. Word has length 69 [2023-04-03 02:37:40,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:37:40,586 INFO L495 AbstractCegarLoop]: Abstraction has 7835 states and 10616 transitions. [2023-04-03 02:37:40,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:40,586 INFO L276 IsEmpty]: Start isEmpty. Operand 7835 states and 10616 transitions. [2023-04-03 02:37:40,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-03 02:37:40,593 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:37:40,593 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, 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 02:37:40,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 02:37:40,594 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:37:40,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:37:40,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1498451088, now seen corresponding path program 1 times [2023-04-03 02:37:40,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:37:40,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620193633] [2023-04-03 02:37:40,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:37:40,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:37:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:37:40,701 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 02:37:40,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:37:40,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620193633] [2023-04-03 02:37:40,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620193633] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:37:40,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:37:40,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:37:40,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315041143] [2023-04-03 02:37:40,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:37:40,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:37:40,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:37:40,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:37:40,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:37:40,703 INFO L87 Difference]: Start difference. First operand 7835 states and 10616 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:41,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:37:41,776 INFO L93 Difference]: Finished difference Result 21172 states and 28728 transitions. [2023-04-03 02:37:41,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:37:41,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-04-03 02:37:41,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:37:41,822 INFO L225 Difference]: With dead ends: 21172 [2023-04-03 02:37:41,822 INFO L226 Difference]: Without dead ends: 13791 [2023-04-03 02:37:41,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:37:41,836 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 468 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:37:41,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1199 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 02:37:41,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13791 states. [2023-04-03 02:37:42,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13791 to 13783. [2023-04-03 02:37:43,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13783 states, 13773 states have (on average 1.3426994844986568) internal successors, (18493), 13779 states have internal predecessors, (18493), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:43,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13783 states to 13783 states and 18496 transitions. [2023-04-03 02:37:43,037 INFO L78 Accepts]: Start accepts. Automaton has 13783 states and 18496 transitions. Word has length 70 [2023-04-03 02:37:43,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:37:43,037 INFO L495 AbstractCegarLoop]: Abstraction has 13783 states and 18496 transitions. [2023-04-03 02:37:43,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:43,038 INFO L276 IsEmpty]: Start isEmpty. Operand 13783 states and 18496 transitions. [2023-04-03 02:37:43,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 02:37:43,046 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:37:43,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:37:43,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 02:37:43,046 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:37:43,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:37:43,047 INFO L85 PathProgramCache]: Analyzing trace with hash 248095378, now seen corresponding path program 1 times [2023-04-03 02:37:43,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:37:43,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705340437] [2023-04-03 02:37:43,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:37:43,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:37:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:37:43,235 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 02:37:43,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:37:43,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705340437] [2023-04-03 02:37:43,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705340437] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:37:43,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:37:43,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 02:37:43,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329751255] [2023-04-03 02:37:43,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:37:43,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 02:37:43,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:37:43,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 02:37:43,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:37:43,237 INFO L87 Difference]: Start difference. First operand 13783 states and 18496 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:48,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:37:48,197 INFO L93 Difference]: Finished difference Result 52433 states and 70383 transitions. [2023-04-03 02:37:48,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 02:37:48,200 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-03 02:37:48,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:37:48,293 INFO L225 Difference]: With dead ends: 52433 [2023-04-03 02:37:48,294 INFO L226 Difference]: Without dead ends: 46632 [2023-04-03 02:37:48,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-04-03 02:37:48,316 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 3772 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3772 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 02:37:48,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3772 Valid, 911 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 02:37:48,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46632 states. [2023-04-03 02:37:50,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46632 to 13811. [2023-04-03 02:37:50,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13811 states, 13801 states have (on average 1.3425838707340048) internal successors, (18529), 13807 states have internal predecessors, (18529), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:50,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13811 states to 13811 states and 18532 transitions. [2023-04-03 02:37:50,086 INFO L78 Accepts]: Start accepts. Automaton has 13811 states and 18532 transitions. Word has length 71 [2023-04-03 02:37:50,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:37:50,086 INFO L495 AbstractCegarLoop]: Abstraction has 13811 states and 18532 transitions. [2023-04-03 02:37:50,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:50,086 INFO L276 IsEmpty]: Start isEmpty. Operand 13811 states and 18532 transitions. [2023-04-03 02:37:50,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 02:37:50,093 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:37:50,093 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, 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 02:37:50,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 02:37:50,093 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:37:50,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:37:50,093 INFO L85 PathProgramCache]: Analyzing trace with hash 789562272, now seen corresponding path program 1 times [2023-04-03 02:37:50,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:37:50,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723468201] [2023-04-03 02:37:50,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:37:50,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:37:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:37:50,349 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 02:37:50,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:37:50,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723468201] [2023-04-03 02:37:50,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723468201] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:37:50,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:37:50,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 02:37:50,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388784960] [2023-04-03 02:37:50,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:37:50,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 02:37:50,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:37:50,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 02:37:50,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:37:50,351 INFO L87 Difference]: Start difference. First operand 13811 states and 18532 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:37:57,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:37:57,998 INFO L93 Difference]: Finished difference Result 57012 states and 77026 transitions. [2023-04-03 02:37:57,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 02:37:57,998 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-03 02:37:57,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:37:58,125 INFO L225 Difference]: With dead ends: 57012 [2023-04-03 02:37:58,126 INFO L226 Difference]: Without dead ends: 51654 [2023-04-03 02:37:58,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-04-03 02:37:58,151 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 2889 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2889 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 02:37:58,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2889 Valid, 1033 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 02:37:58,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51654 states. [2023-04-03 02:38:00,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51654 to 13882. [2023-04-03 02:38:00,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13882 states, 13872 states have (on average 1.3428489042675893) internal successors, (18628), 13878 states have internal predecessors, (18628), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:38:00,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13882 states to 13882 states and 18631 transitions. [2023-04-03 02:38:00,454 INFO L78 Accepts]: Start accepts. Automaton has 13882 states and 18631 transitions. Word has length 71 [2023-04-03 02:38:00,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:38:00,454 INFO L495 AbstractCegarLoop]: Abstraction has 13882 states and 18631 transitions. [2023-04-03 02:38:00,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:38:00,455 INFO L276 IsEmpty]: Start isEmpty. Operand 13882 states and 18631 transitions. [2023-04-03 02:38:00,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 02:38:00,461 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:38:00,461 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, 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 02:38:00,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 02:38:00,461 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:38:00,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:38:00,462 INFO L85 PathProgramCache]: Analyzing trace with hash 114666909, now seen corresponding path program 1 times [2023-04-03 02:38:00,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:38:00,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019054329] [2023-04-03 02:38:00,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:38:00,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:38:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:38:00,634 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 02:38:00,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:38:00,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019054329] [2023-04-03 02:38:00,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019054329] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:38:00,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:38:00,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 02:38:00,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027487138] [2023-04-03 02:38:00,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:38:00,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 02:38:00,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:38:00,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 02:38:00,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:38:00,636 INFO L87 Difference]: Start difference. First operand 13882 states and 18631 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:38:12,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:38:12,837 INFO L93 Difference]: Finished difference Result 71273 states and 97087 transitions. [2023-04-03 02:38:12,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 02:38:12,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-03 02:38:12,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:38:12,987 INFO L225 Difference]: With dead ends: 71273 [2023-04-03 02:38:12,988 INFO L226 Difference]: Without dead ends: 65477 [2023-04-03 02:38:13,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-04-03 02:38:13,021 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 4164 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4164 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 02:38:13,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4164 Valid, 956 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 02:38:13,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65477 states. [2023-04-03 02:38:16,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65477 to 13950. [2023-04-03 02:38:16,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13950 states, 13940 states have (on average 1.3426111908177905) internal successors, (18716), 13946 states have internal predecessors, (18716), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:38:16,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13950 states to 13950 states and 18719 transitions. [2023-04-03 02:38:16,139 INFO L78 Accepts]: Start accepts. Automaton has 13950 states and 18719 transitions. Word has length 71 [2023-04-03 02:38:16,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:38:16,140 INFO L495 AbstractCegarLoop]: Abstraction has 13950 states and 18719 transitions. [2023-04-03 02:38:16,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:38:16,140 INFO L276 IsEmpty]: Start isEmpty. Operand 13950 states and 18719 transitions. [2023-04-03 02:38:16,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 02:38:16,147 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:38:16,147 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, 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 02:38:16,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-03 02:38:16,147 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:38:16,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:38:16,147 INFO L85 PathProgramCache]: Analyzing trace with hash -842134178, now seen corresponding path program 1 times [2023-04-03 02:38:16,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:38:16,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184388678] [2023-04-03 02:38:16,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:38:16,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:38:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:38:16,317 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 02:38:16,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:38:16,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184388678] [2023-04-03 02:38:16,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184388678] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:38:16,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:38:16,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 02:38:16,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467153650] [2023-04-03 02:38:16,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:38:16,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 02:38:16,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:38:16,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 02:38:16,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:38:16,319 INFO L87 Difference]: Start difference. First operand 13950 states and 18719 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:38:30,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:38:30,137 INFO L93 Difference]: Finished difference Result 64705 states and 87774 transitions. [2023-04-03 02:38:30,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 02:38:30,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-03 02:38:30,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:38:30,259 INFO L225 Difference]: With dead ends: 64705 [2023-04-03 02:38:30,260 INFO L226 Difference]: Without dead ends: 58981 [2023-04-03 02:38:30,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-04-03 02:38:30,283 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 3823 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3823 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 02:38:30,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3823 Valid, 946 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 02:38:30,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58981 states. [2023-04-03 02:38:33,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58981 to 14113. [2023-04-03 02:38:33,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14113 states, 14103 states have (on average 1.342338509536978) internal successors, (18931), 14109 states have internal predecessors, (18931), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:38:33,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14113 states to 14113 states and 18934 transitions. [2023-04-03 02:38:33,792 INFO L78 Accepts]: Start accepts. Automaton has 14113 states and 18934 transitions. Word has length 71 [2023-04-03 02:38:33,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:38:33,792 INFO L495 AbstractCegarLoop]: Abstraction has 14113 states and 18934 transitions. [2023-04-03 02:38:33,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:38:33,792 INFO L276 IsEmpty]: Start isEmpty. Operand 14113 states and 18934 transitions. [2023-04-03 02:38:33,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 02:38:33,799 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:38:33,799 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, 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 02:38:33,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-03 02:38:33,799 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:38:33,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:38:33,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1295641206, now seen corresponding path program 1 times [2023-04-03 02:38:33,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:38:33,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618318467] [2023-04-03 02:38:33,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:38:33,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:38:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:38:34,202 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 02:38:34,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:38:34,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618318467] [2023-04-03 02:38:34,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618318467] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:38:34,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:38:34,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:38:34,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328125124] [2023-04-03 02:38:34,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:38:34,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:38:34,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:38:34,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:38:34,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:38:34,204 INFO L87 Difference]: Start difference. First operand 14113 states and 18934 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:38:43,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:38:43,207 INFO L93 Difference]: Finished difference Result 42070 states and 56621 transitions. [2023-04-03 02:38:43,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:38:43,207 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-03 02:38:43,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:38:43,248 INFO L225 Difference]: With dead ends: 42070 [2023-04-03 02:38:43,248 INFO L226 Difference]: Without dead ends: 31530 [2023-04-03 02:38:43,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 02:38:43,268 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 3180 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3180 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 02:38:43,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3180 Valid, 1791 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 02:38:43,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31530 states. [2023-04-03 02:38:46,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31530 to 14093. [2023-04-03 02:38:46,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14093 states, 14083 states have (on average 1.3419725910672442) internal successors, (18899), 14089 states have internal predecessors, (18899), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:38:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14093 states to 14093 states and 18902 transitions. [2023-04-03 02:38:46,825 INFO L78 Accepts]: Start accepts. Automaton has 14093 states and 18902 transitions. Word has length 72 [2023-04-03 02:38:46,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:38:46,825 INFO L495 AbstractCegarLoop]: Abstraction has 14093 states and 18902 transitions. [2023-04-03 02:38:46,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:38:46,825 INFO L276 IsEmpty]: Start isEmpty. Operand 14093 states and 18902 transitions. [2023-04-03 02:38:46,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 02:38:46,831 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:38:46,832 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, 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 02:38:46,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-03 02:38:46,832 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:38:46,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:38:46,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2044505906, now seen corresponding path program 1 times [2023-04-03 02:38:46,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:38:46,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485418656] [2023-04-03 02:38:46,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:38:46,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:38:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:38:46,979 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 02:38:46,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:38:46,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485418656] [2023-04-03 02:38:46,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485418656] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:38:46,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:38:46,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 02:38:46,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598083908] [2023-04-03 02:38:46,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:38:46,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 02:38:46,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:38:46,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 02:38:46,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:38:46,981 INFO L87 Difference]: Start difference. First operand 14093 states and 18902 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:39:02,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:39:02,695 INFO L93 Difference]: Finished difference Result 57269 states and 77353 transitions. [2023-04-03 02:39:02,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 02:39:02,695 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-03 02:39:02,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:39:02,781 INFO L225 Difference]: With dead ends: 57269 [2023-04-03 02:39:02,781 INFO L226 Difference]: Without dead ends: 51897 [2023-04-03 02:39:02,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-04-03 02:39:02,799 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 2881 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2881 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 02:39:02,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2881 Valid, 1033 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 02:39:02,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51897 states. [2023-04-03 02:39:06,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51897 to 14184. [2023-04-03 02:39:06,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14184 states, 14174 states have (on average 1.3423874700155214) internal successors, (19027), 14180 states have internal predecessors, (19027), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:39:06,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14184 states to 14184 states and 19030 transitions. [2023-04-03 02:39:06,722 INFO L78 Accepts]: Start accepts. Automaton has 14184 states and 19030 transitions. Word has length 72 [2023-04-03 02:39:06,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:39:06,722 INFO L495 AbstractCegarLoop]: Abstraction has 14184 states and 19030 transitions. [2023-04-03 02:39:06,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:39:06,722 INFO L276 IsEmpty]: Start isEmpty. Operand 14184 states and 19030 transitions. [2023-04-03 02:39:06,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 02:39:06,728 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:39:06,728 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, 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 02:39:06,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-03 02:39:06,729 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:39:06,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:39:06,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1949103156, now seen corresponding path program 1 times [2023-04-03 02:39:06,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:39:06,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843956421] [2023-04-03 02:39:06,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:39:06,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:39:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:39:07,064 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 02:39:07,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:39:07,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843956421] [2023-04-03 02:39:07,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843956421] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:39:07,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:39:07,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:39:07,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137899169] [2023-04-03 02:39:07,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:39:07,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:39:07,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:39:07,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:39:07,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:39:07,065 INFO L87 Difference]: Start difference. First operand 14184 states and 19030 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:39:23,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:39:23,929 INFO L93 Difference]: Finished difference Result 60891 states and 82129 transitions. [2023-04-03 02:39:23,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-03 02:39:23,930 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-03 02:39:23,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:39:24,009 INFO L225 Difference]: With dead ends: 60891 [2023-04-03 02:39:24,009 INFO L226 Difference]: Without dead ends: 50367 [2023-04-03 02:39:24,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2023-04-03 02:39:24,030 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 2321 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 1789 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2321 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 1821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 02:39:24,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2321 Valid, 2163 Invalid, 1821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1789 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 02:39:24,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50367 states. [2023-04-03 02:39:28,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50367 to 14172. [2023-04-03 02:39:28,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14172 states, 14162 states have (on average 1.3418302499646944) internal successors, (19003), 14168 states have internal predecessors, (19003), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:39:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14172 states to 14172 states and 19006 transitions. [2023-04-03 02:39:28,373 INFO L78 Accepts]: Start accepts. Automaton has 14172 states and 19006 transitions. Word has length 72 [2023-04-03 02:39:28,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:39:28,373 INFO L495 AbstractCegarLoop]: Abstraction has 14172 states and 19006 transitions. [2023-04-03 02:39:28,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:39:28,373 INFO L276 IsEmpty]: Start isEmpty. Operand 14172 states and 19006 transitions. [2023-04-03 02:39:28,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 02:39:28,379 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:39:28,379 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, 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 02:39:28,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-03 02:39:28,379 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:39:28,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:39:28,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1177009557, now seen corresponding path program 1 times [2023-04-03 02:39:28,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:39:28,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954541488] [2023-04-03 02:39:28,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:39:28,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:39:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:39:28,687 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 02:39:28,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:39:28,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954541488] [2023-04-03 02:39:28,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954541488] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:39:28,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:39:28,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:39:28,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763118542] [2023-04-03 02:39:28,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:39:28,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:39:28,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:39:28,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:39:28,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:39:28,690 INFO L87 Difference]: Start difference. First operand 14172 states and 19006 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:39:40,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:39:40,054 INFO L93 Difference]: Finished difference Result 42085 states and 56658 transitions. [2023-04-03 02:39:40,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:39:40,054 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-03 02:39:40,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:39:40,101 INFO L225 Difference]: With dead ends: 42085 [2023-04-03 02:39:40,101 INFO L226 Difference]: Without dead ends: 31321 [2023-04-03 02:39:40,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 02:39:40,120 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 3172 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3172 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 02:39:40,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3172 Valid, 1814 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 02:39:40,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31321 states. [2023-04-03 02:39:44,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31321 to 14041. [2023-04-03 02:39:44,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14041 states, 14031 states have (on average 1.3413869289430547) internal successors, (18821), 14037 states have internal predecessors, (18821), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:39:44,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14041 states to 14041 states and 18824 transitions. [2023-04-03 02:39:44,635 INFO L78 Accepts]: Start accepts. Automaton has 14041 states and 18824 transitions. Word has length 72 [2023-04-03 02:39:44,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:39:44,635 INFO L495 AbstractCegarLoop]: Abstraction has 14041 states and 18824 transitions. [2023-04-03 02:39:44,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:39:44,636 INFO L276 IsEmpty]: Start isEmpty. Operand 14041 states and 18824 transitions. [2023-04-03 02:39:44,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 02:39:44,642 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:39:44,642 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, 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 02:39:44,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-03 02:39:44,642 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:39:44,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:39:44,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2046543905, now seen corresponding path program 1 times [2023-04-03 02:39:44,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:39:44,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334531657] [2023-04-03 02:39:44,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:39:44,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:39:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:39:44,939 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 02:39:44,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:39:44,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334531657] [2023-04-03 02:39:44,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334531657] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:39:44,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:39:44,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-03 02:39:44,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235654023] [2023-04-03 02:39:44,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:39:44,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-03 02:39:44,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:39:44,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-03 02:39:44,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-04-03 02:39:44,941 INFO L87 Difference]: Start difference. First operand 14041 states and 18824 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:00,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:40:00,771 INFO L93 Difference]: Finished difference Result 51978 states and 70298 transitions. [2023-04-03 02:40:00,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 02:40:00,772 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-03 02:40:00,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:40:00,829 INFO L225 Difference]: With dead ends: 51978 [2023-04-03 02:40:00,829 INFO L226 Difference]: Without dead ends: 40714 [2023-04-03 02:40:00,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2023-04-03 02:40:00,847 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 2412 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2412 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 02:40:00,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2412 Valid, 1547 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 02:40:00,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40714 states. [2023-04-03 02:40:05,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40714 to 13718. [2023-04-03 02:40:05,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13718 states, 13708 states have (on average 1.3397286256200758) internal successors, (18365), 13714 states have internal predecessors, (18365), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:05,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13718 states to 13718 states and 18368 transitions. [2023-04-03 02:40:05,570 INFO L78 Accepts]: Start accepts. Automaton has 13718 states and 18368 transitions. Word has length 72 [2023-04-03 02:40:05,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:40:05,570 INFO L495 AbstractCegarLoop]: Abstraction has 13718 states and 18368 transitions. [2023-04-03 02:40:05,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:05,571 INFO L276 IsEmpty]: Start isEmpty. Operand 13718 states and 18368 transitions. [2023-04-03 02:40:05,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-03 02:40:05,576 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:40:05,576 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, 1, 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 02:40:05,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-03 02:40:05,576 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:40:05,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:40:05,576 INFO L85 PathProgramCache]: Analyzing trace with hash -656406054, now seen corresponding path program 1 times [2023-04-03 02:40:05,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:40:05,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142114825] [2023-04-03 02:40:05,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:40:05,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:40:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:40:06,229 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 02:40:06,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:40:06,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142114825] [2023-04-03 02:40:06,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142114825] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:40:06,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:40:06,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 02:40:06,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044247321] [2023-04-03 02:40:06,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:40:06,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 02:40:06,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:40:06,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 02:40:06,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-04-03 02:40:06,231 INFO L87 Difference]: Start difference. First operand 13718 states and 18368 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:27,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:40:27,146 INFO L93 Difference]: Finished difference Result 56301 states and 76266 transitions. [2023-04-03 02:40:27,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-03 02:40:27,147 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2023-04-03 02:40:27,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:40:27,213 INFO L225 Difference]: With dead ends: 56301 [2023-04-03 02:40:27,213 INFO L226 Difference]: Without dead ends: 45739 [2023-04-03 02:40:27,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-04-03 02:40:27,230 INFO L413 NwaCegarLoop]: 898 mSDtfsCounter, 3423 mSDsluCounter, 3959 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3423 SdHoareTripleChecker+Valid, 4857 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 02:40:27,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3423 Valid, 4857 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 02:40:27,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45739 states. [2023-04-03 02:40:32,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45739 to 13654. [2023-04-03 02:40:32,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13654 states, 13645 states have (on average 1.3391718578233784) internal successors, (18273), 13650 states have internal predecessors, (18273), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:32,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13654 states to 13654 states and 18276 transitions. [2023-04-03 02:40:32,769 INFO L78 Accepts]: Start accepts. Automaton has 13654 states and 18276 transitions. Word has length 73 [2023-04-03 02:40:32,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:40:32,770 INFO L495 AbstractCegarLoop]: Abstraction has 13654 states and 18276 transitions. [2023-04-03 02:40:32,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:32,770 INFO L276 IsEmpty]: Start isEmpty. Operand 13654 states and 18276 transitions. [2023-04-03 02:40:32,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-03 02:40:32,775 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:40:32,775 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, 1, 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 02:40:32,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-03 02:40:32,775 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:40:32,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:40:32,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1048418144, now seen corresponding path program 1 times [2023-04-03 02:40:32,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:40:32,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903956296] [2023-04-03 02:40:32,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:40:32,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:40:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:40:33,344 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 02:40:33,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:40:33,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903956296] [2023-04-03 02:40:33,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903956296] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:40:33,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:40:33,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 02:40:33,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071831428] [2023-04-03 02:40:33,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:40:33,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 02:40:33,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:40:33,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 02:40:33,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-04-03 02:40:33,345 INFO L87 Difference]: Start difference. First operand 13654 states and 18276 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:57,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:40:57,601 INFO L93 Difference]: Finished difference Result 59802 states and 80870 transitions. [2023-04-03 02:40:57,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-03 02:40:57,601 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2023-04-03 02:40:57,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:40:57,670 INFO L225 Difference]: With dead ends: 59802 [2023-04-03 02:40:57,671 INFO L226 Difference]: Without dead ends: 48880 [2023-04-03 02:40:57,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2023-04-03 02:40:57,691 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 2848 mSDsluCounter, 4454 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2848 SdHoareTripleChecker+Valid, 5379 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 02:40:57,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2848 Valid, 5379 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 02:40:57,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48880 states. [2023-04-03 02:41:03,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48880 to 13199. [2023-04-03 02:41:03,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13199 states, 13192 states have (on average 1.3395239539114614) internal successors, (17671), 13195 states have internal predecessors, (17671), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:03,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13199 states to 13199 states and 17674 transitions. [2023-04-03 02:41:03,622 INFO L78 Accepts]: Start accepts. Automaton has 13199 states and 17674 transitions. Word has length 73 [2023-04-03 02:41:03,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:41:03,623 INFO L495 AbstractCegarLoop]: Abstraction has 13199 states and 17674 transitions. [2023-04-03 02:41:03,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:03,623 INFO L276 IsEmpty]: Start isEmpty. Operand 13199 states and 17674 transitions. [2023-04-03 02:41:03,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-03 02:41:03,627 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:41:03,628 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, 1, 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 02:41:03,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-03 02:41:03,628 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:41:03,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:41:03,628 INFO L85 PathProgramCache]: Analyzing trace with hash 484418069, now seen corresponding path program 1 times [2023-04-03 02:41:03,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:41:03,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588035107] [2023-04-03 02:41:03,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:41:03,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:41:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:41:04,072 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 02:41:04,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:41:04,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588035107] [2023-04-03 02:41:04,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588035107] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:41:04,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:41:04,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-03 02:41:04,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304980923] [2023-04-03 02:41:04,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:41:04,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-03 02:41:04,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:41:04,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-03 02:41:04,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-03 02:41:04,074 INFO L87 Difference]: Start difference. First operand 13199 states and 17674 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:28,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:41:28,068 INFO L93 Difference]: Finished difference Result 53801 states and 72762 transitions. [2023-04-03 02:41:28,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 02:41:28,068 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2023-04-03 02:41:28,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:41:28,128 INFO L225 Difference]: With dead ends: 53801 [2023-04-03 02:41:28,128 INFO L226 Difference]: Without dead ends: 43092 [2023-04-03 02:41:28,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2023-04-03 02:41:28,147 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 2861 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2861 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 02:41:28,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2861 Valid, 2978 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 02:41:28,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43092 states. [2023-04-03 02:41:34,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43092 to 13006. [2023-04-03 02:41:34,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13006 states, 13000 states have (on average 1.3386153846153845) internal successors, (17402), 13002 states have internal predecessors, (17402), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:34,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13006 states to 13006 states and 17405 transitions. [2023-04-03 02:41:34,801 INFO L78 Accepts]: Start accepts. Automaton has 13006 states and 17405 transitions. Word has length 73 [2023-04-03 02:41:34,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:41:34,801 INFO L495 AbstractCegarLoop]: Abstraction has 13006 states and 17405 transitions. [2023-04-03 02:41:34,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:34,802 INFO L276 IsEmpty]: Start isEmpty. Operand 13006 states and 17405 transitions. [2023-04-03 02:41:34,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-03 02:41:34,806 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:41:34,806 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, 1, 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 02:41:34,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-03 02:41:34,806 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:41:34,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:41:34,807 INFO L85 PathProgramCache]: Analyzing trace with hash -585649326, now seen corresponding path program 1 times [2023-04-03 02:41:34,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:41:34,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816353195] [2023-04-03 02:41:34,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:41:34,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:41:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:41:35,242 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 02:41:35,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:41:35,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816353195] [2023-04-03 02:41:35,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816353195] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:41:35,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:41:35,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 02:41:35,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293467262] [2023-04-03 02:41:35,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:41:35,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 02:41:35,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:41:35,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 02:41:35,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 02:41:35,244 INFO L87 Difference]: Start difference. First operand 13006 states and 17405 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)