/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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 02:44:17,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 02:44:17,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 02:44:17,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 02:44:17,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 02:44:17,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 02:44:17,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 02:44:17,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 02:44:17,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 02:44:17,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 02:44:17,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 02:44:17,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 02:44:17,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 02:44:17,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 02:44:17,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 02:44:17,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 02:44:17,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 02:44:17,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 02:44:17,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 02:44:17,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 02:44:17,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 02:44:17,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 02:44:17,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 02:44:17,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 02:44:17,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 02:44:17,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 02:44:17,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 02:44:17,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 02:44:17,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 02:44:17,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 02:44:17,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 02:44:17,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 02:44:17,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 02:44:17,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 02:44:17,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 02:44:17,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 02:44:17,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 02:44:17,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 02:44:17,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 02:44:17,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 02:44:17,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 02:44:17,944 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 02:44:17,966 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 02:44:17,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 02:44:17,967 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 02:44:17,967 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 02:44:17,968 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 02:44:17,968 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 02:44:17,968 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 02:44:17,968 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 02:44:17,968 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 02:44:17,969 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 02:44:17,969 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 02:44:17,969 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 02:44:17,969 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 02:44:17,970 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 02:44:17,970 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 02:44:17,970 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 02:44:17,970 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 02:44:17,970 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 02:44:17,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 02:44:17,971 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 02:44:17,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 02:44:17,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 02:44:17,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 02:44:17,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 02:44:17,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 02:44:17,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 02:44:17,971 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 02:44:17,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 02:44:17,971 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 02:44:17,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 02:44:17,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 02:44:17,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 02:44:17,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 02:44:17,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 02:44:17,972 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 02:44:17,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 02:44:17,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 02:44:17,973 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 02:44:17,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 02:44:17,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 02:44:17,973 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 02:44:17,973 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 02:44:18,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 02:44:18,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 02:44:18,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 02:44:18,174 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 02:44:18,175 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 02:44:18,176 INFO L432 ainManager$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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-03 02:44:19,222 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 02:44:19,504 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 02:44:19,505 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-03 02:44:19,523 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a74237cee/aae79bc5f8b842d5bf0a60e4926a08e6/FLAGeded6a13e [2023-04-03 02:44:19,535 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a74237cee/aae79bc5f8b842d5bf0a60e4926a08e6 [2023-04-03 02:44:19,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 02:44:19,538 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 02:44:19,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 02:44:19,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 02:44:19,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 02:44:19,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 02:44:19" (1/1) ... [2023-04-03 02:44:19,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11b2d924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:19, skipping insertion in model container [2023-04-03 02:44:19,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 02:44:19" (1/1) ... [2023-04-03 02:44:19,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 02:44:19,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 02:44:19,886 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11898,11911] [2023-04-03 02:44:19,915 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18616,18629] [2023-04-03 02:44:19,944 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20814,20827] [2023-04-03 02:44:19,955 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21891,21904] [2023-04-03 02:44:19,967 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25244,25257] [2023-04-03 02:44:19,971 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26324,26337] [2023-04-03 02:44:19,982 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28553,28566] [2023-04-03 02:44:20,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 02:44:20,280 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 02:44:20,331 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11898,11911] [2023-04-03 02:44:20,354 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18616,18629] [2023-04-03 02:44:20,365 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20814,20827] [2023-04-03 02:44:20,371 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21891,21904] [2023-04-03 02:44:20,385 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25244,25257] [2023-04-03 02:44:20,391 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26324,26337] [2023-04-03 02:44:20,401 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28553,28566] [2023-04-03 02:44:20,586 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 02:44:20,609 INFO L208 MainTranslator]: Completed translation [2023-04-03 02:44:20,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:20 WrapperNode [2023-04-03 02:44:20,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 02:44:20,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 02:44:20,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 02:44:20,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 02:44:20,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:20" (1/1) ... [2023-04-03 02:44:20,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:20" (1/1) ... [2023-04-03 02:44:20,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:20" (1/1) ... [2023-04-03 02:44:20,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:20" (1/1) ... [2023-04-03 02:44:20,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:20" (1/1) ... [2023-04-03 02:44:20,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:20" (1/1) ... [2023-04-03 02:44:20,758 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:20" (1/1) ... [2023-04-03 02:44:20,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:20" (1/1) ... [2023-04-03 02:44:20,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 02:44:20,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 02:44:20,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 02:44:20,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 02:44:20,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:20" (1/1) ... [2023-04-03 02:44:20,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 02:44:20,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 02:44:20,858 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 02:44:20,862 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 02:44:20,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 02:44:20,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 02:44:20,882 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 02:44:20,882 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 02:44:20,882 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 02:44:20,882 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 02:44:20,882 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 02:44:20,882 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 02:44:20,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 02:44:20,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 02:44:20,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 02:44:20,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-03 02:44:20,882 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 02:44:20,882 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 02:44:20,883 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 02:44:20,883 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 02:44:20,883 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 02:44:20,883 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 02:44:20,883 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 02:44:20,883 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 02:44:20,883 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 02:44:20,883 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 02:44:20,883 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 02:44:20,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 02:44:20,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 02:44:20,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 02:44:20,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 02:44:20,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 02:44:20,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 02:44:21,153 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 02:44:21,154 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 02:44:22,957 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 02:44:23,111 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 02:44:23,111 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 02:44:23,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 02:44:23 BoogieIcfgContainer [2023-04-03 02:44:23,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 02:44:23,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 02:44:23,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 02:44:23,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 02:44:23,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 02:44:19" (1/3) ... [2023-04-03 02:44:23,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f225a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 02:44:23, skipping insertion in model container [2023-04-03 02:44:23,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:20" (2/3) ... [2023-04-03 02:44:23,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f225a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 02:44:23, skipping insertion in model container [2023-04-03 02:44:23,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 02:44:23" (3/3) ... [2023-04-03 02:44:23,119 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-03 02:44:23,130 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 02:44:23,130 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-04-03 02:44:23,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 02:44:23,177 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;@251ee355, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 02:44:23,177 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-04-03 02:44:23,185 INFO L276 IsEmpty]: Start isEmpty. Operand has 1060 states, 1048 states have (on average 1.8931297709923665) internal successors, (1984), 1055 states have internal predecessors, (1984), 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 02:44:23,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-03 02:44:23,199 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:44:23,200 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] [2023-04-03 02:44:23,200 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:44:23,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:44:23,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1216165993, now seen corresponding path program 1 times [2023-04-03 02:44:23,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:44:23,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415951741] [2023-04-03 02:44:23,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:44:23,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:44:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:44:23,746 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 02:44:23,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:44:23,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415951741] [2023-04-03 02:44:23,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415951741] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:44:23,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:44:23,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:44:23,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662003534] [2023-04-03 02:44:23,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:44:23,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:44:23,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:44:23,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:44:23,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:44:23,790 INFO L87 Difference]: Start difference. First operand has 1060 states, 1048 states have (on average 1.8931297709923665) internal successors, (1984), 1055 states have internal predecessors, (1984), 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 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 02:44:24,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:44:24,049 INFO L93 Difference]: Finished difference Result 1370 states and 2487 transitions. [2023-04-03 02:44:24,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:44:24,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 66 [2023-04-03 02:44:24,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:44:24,062 INFO L225 Difference]: With dead ends: 1370 [2023-04-03 02:44:24,063 INFO L226 Difference]: Without dead ends: 1195 [2023-04-03 02:44:24,066 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 02:44:24,068 INFO L413 NwaCegarLoop]: 1972 mSDtfsCounter, 979 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 3136 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:44:24,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 3136 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:44:24,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2023-04-03 02:44:24,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1187. [2023-04-03 02:44:24,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1177 states have (on average 1.2939677145284623) internal successors, (1523), 1183 states have internal predecessors, (1523), 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 02:44:24,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1526 transitions. [2023-04-03 02:44:24,149 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1526 transitions. Word has length 66 [2023-04-03 02:44:24,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:44:24,150 INFO L495 AbstractCegarLoop]: Abstraction has 1187 states and 1526 transitions. [2023-04-03 02:44:24,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 02:44:24,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1526 transitions. [2023-04-03 02:44:24,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-03 02:44:24,153 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:44:24,153 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] [2023-04-03 02:44:24,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 02:44:24,154 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:44:24,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:44:24,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1487667454, now seen corresponding path program 1 times [2023-04-03 02:44:24,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:44:24,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906462461] [2023-04-03 02:44:24,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:44:24,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:44:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:44:24,419 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 02:44:24,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:44:24,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906462461] [2023-04-03 02:44:24,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906462461] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:44:24,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:44:24,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:44:24,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56643850] [2023-04-03 02:44:24,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:44:24,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:44:24,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:44:24,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:44:24,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:44:24,430 INFO L87 Difference]: Start difference. First operand 1187 states and 1526 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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 02:44:25,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:44:25,047 INFO L93 Difference]: Finished difference Result 1809 states and 2343 transitions. [2023-04-03 02:44:25,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:44:25,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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 66 [2023-04-03 02:44:25,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:44:25,054 INFO L225 Difference]: With dead ends: 1809 [2023-04-03 02:44:25,054 INFO L226 Difference]: Without dead ends: 1228 [2023-04-03 02:44:25,058 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 02:44:25,059 INFO L413 NwaCegarLoop]: 659 mSDtfsCounter, 3594 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3594 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 02:44:25,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3594 Valid, 758 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 02:44:25,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2023-04-03 02:44:25,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1220. [2023-04-03 02:44:25,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1210 states have (on average 1.2694214876033059) internal successors, (1536), 1216 states have internal predecessors, (1536), 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 02:44:25,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1539 transitions. [2023-04-03 02:44:25,137 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1539 transitions. Word has length 66 [2023-04-03 02:44:25,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:44:25,137 INFO L495 AbstractCegarLoop]: Abstraction has 1220 states and 1539 transitions. [2023-04-03 02:44:25,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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 02:44:25,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1539 transitions. [2023-04-03 02:44:25,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-03 02:44:25,139 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:44:25,139 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] [2023-04-03 02:44:25,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 02:44:25,140 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:44:25,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:44:25,140 INFO L85 PathProgramCache]: Analyzing trace with hash 776745407, now seen corresponding path program 1 times [2023-04-03 02:44:25,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:44:25,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389527485] [2023-04-03 02:44:25,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:44:25,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:44:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:44:25,284 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 02:44:25,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:44:25,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389527485] [2023-04-03 02:44:25,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389527485] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:44:25,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:44:25,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:44:25,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025503374] [2023-04-03 02:44:25,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:44:25,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:44:25,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:44:25,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:44:25,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:44:25,289 INFO L87 Difference]: Start difference. First operand 1220 states and 1539 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 02:44:25,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:44:25,426 INFO L93 Difference]: Finished difference Result 1864 states and 2458 transitions. [2023-04-03 02:44:25,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:44:25,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 66 [2023-04-03 02:44:25,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:44:25,431 INFO L225 Difference]: With dead ends: 1864 [2023-04-03 02:44:25,431 INFO L226 Difference]: Without dead ends: 1559 [2023-04-03 02:44:25,432 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 02:44:25,433 INFO L413 NwaCegarLoop]: 1138 mSDtfsCounter, 598 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:44:25,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 1788 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:44:25,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2023-04-03 02:44:25,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1551. [2023-04-03 02:44:25,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1551 states, 1541 states have (on average 1.3024010382868267) internal successors, (2007), 1547 states have internal predecessors, (2007), 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 02:44:25,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1551 states to 1551 states and 2010 transitions. [2023-04-03 02:44:25,490 INFO L78 Accepts]: Start accepts. Automaton has 1551 states and 2010 transitions. Word has length 66 [2023-04-03 02:44:25,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:44:25,490 INFO L495 AbstractCegarLoop]: Abstraction has 1551 states and 2010 transitions. [2023-04-03 02:44:25,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 02:44:25,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1551 states and 2010 transitions. [2023-04-03 02:44:25,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-03 02:44:25,492 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:44:25,492 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] [2023-04-03 02:44:25,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 02:44:25,493 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:44:25,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:44:25,493 INFO L85 PathProgramCache]: Analyzing trace with hash 309587479, now seen corresponding path program 1 times [2023-04-03 02:44:25,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:44:25,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526428381] [2023-04-03 02:44:25,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:44:25,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:44:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:44:25,668 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 02:44:25,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:44:25,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526428381] [2023-04-03 02:44:25,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526428381] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:44:25,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:44:25,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:44:25,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460366187] [2023-04-03 02:44:25,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:44:25,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:44:25,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:44:25,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:44:25,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:44:25,669 INFO L87 Difference]: Start difference. First operand 1551 states and 2010 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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 02:44:26,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:44:26,101 INFO L93 Difference]: Finished difference Result 3146 states and 4208 transitions. [2023-04-03 02:44:26,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:44:26,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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 66 [2023-04-03 02:44:26,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:44:26,107 INFO L225 Difference]: With dead ends: 3146 [2023-04-03 02:44:26,107 INFO L226 Difference]: Without dead ends: 1886 [2023-04-03 02:44:26,109 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 02:44:26,113 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 2861 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2861 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 02:44:26,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2861 Valid, 675 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 02:44:26,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2023-04-03 02:44:26,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1878. [2023-04-03 02:44:26,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1868 states have (on average 1.3447537473233404) internal successors, (2512), 1874 states have internal predecessors, (2512), 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 02:44:26,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2515 transitions. [2023-04-03 02:44:26,218 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2515 transitions. Word has length 66 [2023-04-03 02:44:26,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:44:26,218 INFO L495 AbstractCegarLoop]: Abstraction has 1878 states and 2515 transitions. [2023-04-03 02:44:26,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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 02:44:26,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2515 transitions. [2023-04-03 02:44:26,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-03 02:44:26,221 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:44:26,221 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 02:44:26,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 02:44:26,221 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 02:44:26,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:44:26,222 INFO L85 PathProgramCache]: Analyzing trace with hash -285809185, now seen corresponding path program 1 times [2023-04-03 02:44:26,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:44:26,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167148658] [2023-04-03 02:44:26,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:44:26,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:44:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:44:26,367 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 02:44:26,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:44:26,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167148658] [2023-04-03 02:44:26,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167148658] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:44:26,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:44:26,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:44:26,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38302433] [2023-04-03 02:44:26,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:44:26,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:44:26,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:44:26,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:44:26,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:44:26,369 INFO L87 Difference]: Start difference. First operand 1878 states and 2515 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 02:44:26,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:44:26,589 INFO L93 Difference]: Finished difference Result 4065 states and 5569 transitions. [2023-04-03 02:44:26,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:44:26,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 67 [2023-04-03 02:44:26,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:44:26,597 INFO L225 Difference]: With dead ends: 4065 [2023-04-03 02:44:26,598 INFO L226 Difference]: Without dead ends: 2956 [2023-04-03 02:44:26,600 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 02:44:26,600 INFO L413 NwaCegarLoop]: 1145 mSDtfsCounter, 719 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1718 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 02:44:26,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1718 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 02:44:26,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2023-04-03 02:44:26,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 2948. [2023-04-03 02:44:26,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2948 states, 2938 states have (on average 1.3485364193328795) internal successors, (3962), 2944 states have internal predecessors, (3962), 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 02:44:26,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 3965 transitions. [2023-04-03 02:44:26,826 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 3965 transitions. Word has length 67 [2023-04-03 02:44:26,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:44:26,826 INFO L495 AbstractCegarLoop]: Abstraction has 2948 states and 3965 transitions. [2023-04-03 02:44:26,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 02:44:26,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 3965 transitions. [2023-04-03 02:44:26,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-03 02:44:26,829 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:44:26,829 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] [2023-04-03 02:44:26,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 02:44:26,830 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 02:44:26,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:44:26,830 INFO L85 PathProgramCache]: Analyzing trace with hash 2047280549, now seen corresponding path program 1 times [2023-04-03 02:44:26,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:44:26,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792339896] [2023-04-03 02:44:26,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:44:26,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:44:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:44:26,977 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 02:44:26,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:44:26,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792339896] [2023-04-03 02:44:26,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792339896] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:44:26,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:44:26,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:44:26,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852931362] [2023-04-03 02:44:26,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:44:26,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:44:26,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:44:26,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:44:26,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:44:26,979 INFO L87 Difference]: Start difference. First operand 2948 states and 3965 transitions. 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 02:44:27,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:44:27,587 INFO L93 Difference]: Finished difference Result 6839 states and 9424 transitions. [2023-04-03 02:44:27,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:44:27,588 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 02:44:27,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:44:27,601 INFO L225 Difference]: With dead ends: 6839 [2023-04-03 02:44:27,601 INFO L226 Difference]: Without dead ends: 4329 [2023-04-03 02:44:27,605 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 02:44:27,606 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 2467 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2467 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 02:44:27,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2467 Valid, 576 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 02:44:27,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4329 states. [2023-04-03 02:44:27,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4329 to 4321. [2023-04-03 02:44:27,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4321 states, 4311 states have (on average 1.3736951983298538) internal successors, (5922), 4317 states have internal predecessors, (5922), 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 02:44:27,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4321 states to 4321 states and 5925 transitions. [2023-04-03 02:44:27,906 INFO L78 Accepts]: Start accepts. Automaton has 4321 states and 5925 transitions. Word has length 67 [2023-04-03 02:44:27,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:44:27,906 INFO L495 AbstractCegarLoop]: Abstraction has 4321 states and 5925 transitions. [2023-04-03 02:44:27,906 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 02:44:27,906 INFO L276 IsEmpty]: Start isEmpty. Operand 4321 states and 5925 transitions. [2023-04-03 02:44:27,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-03 02:44:27,909 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:44:27,909 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 02:44:27,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 02:44:27,909 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 02:44:27,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:44:27,910 INFO L85 PathProgramCache]: Analyzing trace with hash 17972660, now seen corresponding path program 1 times [2023-04-03 02:44:27,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:44:27,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004548330] [2023-04-03 02:44:27,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:44:27,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:44:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:44:28,052 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 02:44:28,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:44:28,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004548330] [2023-04-03 02:44:28,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004548330] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:44:28,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:44:28,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:44:28,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508831296] [2023-04-03 02:44:28,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:44:28,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:44:28,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:44:28,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:44:28,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:44:28,054 INFO L87 Difference]: Start difference. First operand 4321 states and 5925 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 02:44:29,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:44:29,000 INFO L93 Difference]: Finished difference Result 11418 states and 15899 transitions. [2023-04-03 02:44:29,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:44:29,000 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 02:44:29,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:44:29,023 INFO L225 Difference]: With dead ends: 11418 [2023-04-03 02:44:29,024 INFO L226 Difference]: Without dead ends: 7322 [2023-04-03 02:44:29,032 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 02:44:29,032 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 2039 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2039 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 02:44:29,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2039 Valid, 519 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 02:44:29,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7322 states. [2023-04-03 02:44:29,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7322 to 7314. [2023-04-03 02:44:29,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7314 states, 7304 states have (on average 1.38170865279299) internal successors, (10092), 7310 states have internal predecessors, (10092), 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 02:44:29,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7314 states to 7314 states and 10095 transitions. [2023-04-03 02:44:29,633 INFO L78 Accepts]: Start accepts. Automaton has 7314 states and 10095 transitions. Word has length 68 [2023-04-03 02:44:29,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:44:29,633 INFO L495 AbstractCegarLoop]: Abstraction has 7314 states and 10095 transitions. [2023-04-03 02:44:29,633 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 02:44:29,633 INFO L276 IsEmpty]: Start isEmpty. Operand 7314 states and 10095 transitions. [2023-04-03 02:44:29,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-03 02:44:29,641 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:44:29,641 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 02:44:29,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 02:44:29,641 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 02:44:29,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:44:29,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1376653970, now seen corresponding path program 1 times [2023-04-03 02:44:29,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:44:29,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616305212] [2023-04-03 02:44:29,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:44:29,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:44:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:44:29,751 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 02:44:29,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:44:29,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616305212] [2023-04-03 02:44:29,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616305212] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:44:29,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:44:29,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:44:29,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560538801] [2023-04-03 02:44:29,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:44:29,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:44:29,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:44:29,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:44:29,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:44:29,753 INFO L87 Difference]: Start difference. First operand 7314 states and 10095 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 02:44:30,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:44:30,820 INFO L93 Difference]: Finished difference Result 18571 states and 25829 transitions. [2023-04-03 02:44:30,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:44:30,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 69 [2023-04-03 02:44:30,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:44:30,852 INFO L225 Difference]: With dead ends: 18571 [2023-04-03 02:44:30,852 INFO L226 Difference]: Without dead ends: 12234 [2023-04-03 02:44:30,863 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 02:44:30,863 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 464 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1187 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 02:44:30,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 1187 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 02:44:30,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12234 states. [2023-04-03 02:44:31,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12234 to 12226. [2023-04-03 02:44:31,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12226 states, 12216 states have (on average 1.3741814014407334) internal successors, (16787), 12222 states have internal predecessors, (16787), 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 02:44:31,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12226 states to 12226 states and 16790 transitions. [2023-04-03 02:44:31,834 INFO L78 Accepts]: Start accepts. Automaton has 12226 states and 16790 transitions. Word has length 69 [2023-04-03 02:44:31,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:44:31,834 INFO L495 AbstractCegarLoop]: Abstraction has 12226 states and 16790 transitions. [2023-04-03 02:44:31,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 02:44:31,835 INFO L276 IsEmpty]: Start isEmpty. Operand 12226 states and 16790 transitions. [2023-04-03 02:44:31,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-03 02:44:31,840 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:44:31,840 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 02:44:31,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 02:44:31,841 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:44:31,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:44:31,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1893198525, now seen corresponding path program 1 times [2023-04-03 02:44:31,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:44:31,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63635480] [2023-04-03 02:44:31,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:44:31,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:44:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:44:32,004 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 02:44:32,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:44:32,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63635480] [2023-04-03 02:44:32,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63635480] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:44:32,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:44:32,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 02:44:32,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371152589] [2023-04-03 02:44:32,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:44:32,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 02:44:32,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:44:32,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 02:44:32,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:44:32,006 INFO L87 Difference]: Start difference. First operand 12226 states and 16790 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 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 02:44:38,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:44:38,099 INFO L93 Difference]: Finished difference Result 65420 states and 91018 transitions. [2023-04-03 02:44:38,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 02:44:38,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 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 70 [2023-04-03 02:44:38,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:44:38,270 INFO L225 Difference]: With dead ends: 65420 [2023-04-03 02:44:38,271 INFO L226 Difference]: Without dead ends: 60136 [2023-04-03 02:44:38,304 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 02:44:38,305 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 4095 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4095 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 02:44:38,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4095 Valid, 941 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 02:44:38,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60136 states. [2023-04-03 02:44:40,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60136 to 12294. [2023-04-03 02:44:40,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12294 states, 12284 states have (on average 1.3737381960273527) internal successors, (16875), 12290 states have internal predecessors, (16875), 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 02:44:40,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12294 states to 12294 states and 16878 transitions. [2023-04-03 02:44:40,224 INFO L78 Accepts]: Start accepts. Automaton has 12294 states and 16878 transitions. Word has length 70 [2023-04-03 02:44:40,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:44:40,225 INFO L495 AbstractCegarLoop]: Abstraction has 12294 states and 16878 transitions. [2023-04-03 02:44:40,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 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 02:44:40,225 INFO L276 IsEmpty]: Start isEmpty. Operand 12294 states and 16878 transitions. [2023-04-03 02:44:40,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-03 02:44:40,231 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:44:40,231 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 02:44:40,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 02:44:40,232 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:44:40,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:44:40,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1197711932, now seen corresponding path program 1 times [2023-04-03 02:44:40,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:44:40,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104913537] [2023-04-03 02:44:40,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:44:40,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:44:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:44:40,388 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 02:44:40,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:44:40,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104913537] [2023-04-03 02:44:40,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104913537] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:44:40,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:44:40,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 02:44:40,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906896992] [2023-04-03 02:44:40,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:44:40,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 02:44:40,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:44:40,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 02:44:40,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:44:40,390 INFO L87 Difference]: Start difference. First operand 12294 states and 16878 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 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 02:44:49,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:44:49,163 INFO L93 Difference]: Finished difference Result 58504 states and 81247 transitions. [2023-04-03 02:44:49,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 02:44:49,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 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 70 [2023-04-03 02:44:49,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:44:49,297 INFO L225 Difference]: With dead ends: 58504 [2023-04-03 02:44:49,297 INFO L226 Difference]: Without dead ends: 53394 [2023-04-03 02:44:49,321 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 02:44:49,321 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 3748 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3748 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 02:44:49,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3748 Valid, 932 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 02:44:49,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53394 states. [2023-04-03 02:44:51,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53394 to 12416. [2023-04-03 02:44:51,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12416 states, 12406 states have (on average 1.373287119135902) internal successors, (17037), 12412 states have internal predecessors, (17037), 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 02:44:51,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12416 states to 12416 states and 17040 transitions. [2023-04-03 02:44:51,574 INFO L78 Accepts]: Start accepts. Automaton has 12416 states and 17040 transitions. Word has length 70 [2023-04-03 02:44:51,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:44:51,574 INFO L495 AbstractCegarLoop]: Abstraction has 12416 states and 17040 transitions. [2023-04-03 02:44:51,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 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 02:44:51,574 INFO L276 IsEmpty]: Start isEmpty. Operand 12416 states and 17040 transitions. [2023-04-03 02:44:51,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-03 02:44:51,580 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:44:51,580 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 02:44:51,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 02:44:51,581 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:44:51,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:44:51,581 INFO L85 PathProgramCache]: Analyzing trace with hash 658032167, now seen corresponding path program 1 times [2023-04-03 02:44:51,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:44:51,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625616149] [2023-04-03 02:44:51,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:44:51,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:44:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:44:51,764 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 02:44:51,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:44:51,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625616149] [2023-04-03 02:44:51,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625616149] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:44:51,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:44:51,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 02:44:51,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124223945] [2023-04-03 02:44:51,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:44:51,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 02:44:51,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:44:51,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 02:44:51,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:44:51,765 INFO L87 Difference]: Start difference. First operand 12416 states and 17040 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 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 02:45:01,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:45:01,220 INFO L93 Difference]: Finished difference Result 51404 states and 71272 transitions. [2023-04-03 02:45:01,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 02:45:01,220 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 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 70 [2023-04-03 02:45:01,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:45:01,315 INFO L225 Difference]: With dead ends: 51404 [2023-04-03 02:45:01,316 INFO L226 Difference]: Without dead ends: 46558 [2023-04-03 02:45:01,338 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 02:45:01,340 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 2843 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2843 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 02:45:01,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2843 Valid, 1011 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 02:45:01,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46558 states. [2023-04-03 02:45:03,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46558 to 12487. [2023-04-03 02:45:03,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12487 states, 12477 states have (on average 1.3734070690069728) internal successors, (17136), 12483 states have internal predecessors, (17136), 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 02:45:03,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12487 states to 12487 states and 17139 transitions. [2023-04-03 02:45:03,880 INFO L78 Accepts]: Start accepts. Automaton has 12487 states and 17139 transitions. Word has length 70 [2023-04-03 02:45:03,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:45:03,880 INFO L495 AbstractCegarLoop]: Abstraction has 12487 states and 17139 transitions. [2023-04-03 02:45:03,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 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 02:45:03,881 INFO L276 IsEmpty]: Start isEmpty. Operand 12487 states and 17139 transitions. [2023-04-03 02:45:03,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-03 02:45:03,887 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:45:03,887 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 02:45:03,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-03 02:45:03,887 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:45:03,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:45:03,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1131656471, now seen corresponding path program 1 times [2023-04-03 02:45:03,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:45:03,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698991870] [2023-04-03 02:45:03,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:45:03,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:45:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:45:04,082 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 02:45:04,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:45:04,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698991870] [2023-04-03 02:45:04,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698991870] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:45:04,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:45:04,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 02:45:04,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274454101] [2023-04-03 02:45:04,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:45:04,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 02:45:04,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:45:04,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 02:45:04,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:45:04,084 INFO L87 Difference]: Start difference. First operand 12487 states and 17139 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 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 02:45:13,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:45:13,987 INFO L93 Difference]: Finished difference Result 46826 states and 64661 transitions. [2023-04-03 02:45:13,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 02:45:13,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 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 70 [2023-04-03 02:45:13,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:45:14,058 INFO L225 Difference]: With dead ends: 46826 [2023-04-03 02:45:14,058 INFO L226 Difference]: Without dead ends: 41520 [2023-04-03 02:45:14,075 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 02:45:14,076 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 3699 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3699 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 02:45:14,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3699 Valid, 896 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 02:45:14,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41520 states. [2023-04-03 02:45:16,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41520 to 12522. [2023-04-03 02:45:16,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12522 states, 12512 states have (on average 1.3731617647058822) internal successors, (17181), 12518 states have internal predecessors, (17181), 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 02:45:16,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12522 states to 12522 states and 17184 transitions. [2023-04-03 02:45:16,944 INFO L78 Accepts]: Start accepts. Automaton has 12522 states and 17184 transitions. Word has length 70 [2023-04-03 02:45:16,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:45:16,944 INFO L495 AbstractCegarLoop]: Abstraction has 12522 states and 17184 transitions. [2023-04-03 02:45:16,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 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 02:45:16,945 INFO L276 IsEmpty]: Start isEmpty. Operand 12522 states and 17184 transitions. [2023-04-03 02:45:16,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 02:45:16,952 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:45:16,952 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 02:45:16,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-03 02:45:16,952 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:45:16,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:45:16,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1035712033, now seen corresponding path program 1 times [2023-04-03 02:45:16,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:45:16,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572229819] [2023-04-03 02:45:16,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:45:16,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:45:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:45:17,286 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 02:45:17,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:45:17,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572229819] [2023-04-03 02:45:17,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572229819] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:45:17,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:45:17,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-03 02:45:17,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004595367] [2023-04-03 02:45:17,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:45:17,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-03 02:45:17,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:45:17,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-03 02:45:17,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-04-03 02:45:17,289 INFO L87 Difference]: Start difference. First operand 12522 states and 17184 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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 02:45:27,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:45:27,559 INFO L93 Difference]: Finished difference Result 46803 states and 64996 transitions. [2023-04-03 02:45:27,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 02:45:27,559 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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 02:45:27,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:45:27,618 INFO L225 Difference]: With dead ends: 46803 [2023-04-03 02:45:27,619 INFO L226 Difference]: Without dead ends: 36605 [2023-04-03 02:45:27,639 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 02:45:27,639 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 2391 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2391 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 02:45:27,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2391 Valid, 1611 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 02:45:27,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36605 states. [2023-04-03 02:45:30,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36605 to 12220. [2023-04-03 02:45:30,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12220 states, 12210 states have (on average 1.3722358722358723) internal successors, (16755), 12216 states have internal predecessors, (16755), 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 02:45:30,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12220 states to 12220 states and 16758 transitions. [2023-04-03 02:45:30,843 INFO L78 Accepts]: Start accepts. Automaton has 12220 states and 16758 transitions. Word has length 71 [2023-04-03 02:45:30,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:45:30,843 INFO L495 AbstractCegarLoop]: Abstraction has 12220 states and 16758 transitions. [2023-04-03 02:45:30,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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 02:45:30,843 INFO L276 IsEmpty]: Start isEmpty. Operand 12220 states and 16758 transitions. [2023-04-03 02:45:30,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 02:45:30,849 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:45:30,849 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 02:45:30,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-03 02:45:30,850 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:45:30,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:45:30,850 INFO L85 PathProgramCache]: Analyzing trace with hash -531953244, now seen corresponding path program 1 times [2023-04-03 02:45:30,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:45:30,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501414433] [2023-04-03 02:45:30,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:45:30,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:45:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:45:31,195 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 02:45:31,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:45:31,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501414433] [2023-04-03 02:45:31,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501414433] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:45:31,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:45:31,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:45:31,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63748630] [2023-04-03 02:45:31,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:45:31,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:45:31,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:45:31,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:45:31,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:45:31,197 INFO L87 Difference]: Start difference. First operand 12220 states and 16758 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 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 02:45:39,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:45:39,681 INFO L93 Difference]: Finished difference Result 37559 states and 51827 transitions. [2023-04-03 02:45:39,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:45:39,682 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 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 02:45:39,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:45:39,721 INFO L225 Difference]: With dead ends: 37559 [2023-04-03 02:45:39,721 INFO L226 Difference]: Without dead ends: 27819 [2023-04-03 02:45:39,737 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 02:45:39,737 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 3040 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3040 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 02:45:39,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3040 Valid, 1898 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 02:45:39,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27819 states. [2023-04-03 02:45:43,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27819 to 12089. [2023-04-03 02:45:43,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12089 states, 12079 states have (on average 1.3720506664458978) internal successors, (16573), 12085 states have internal predecessors, (16573), 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 02:45:43,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12089 states to 12089 states and 16576 transitions. [2023-04-03 02:45:43,065 INFO L78 Accepts]: Start accepts. Automaton has 12089 states and 16576 transitions. Word has length 71 [2023-04-03 02:45:43,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:45:43,065 INFO L495 AbstractCegarLoop]: Abstraction has 12089 states and 16576 transitions. [2023-04-03 02:45:43,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 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 02:45:43,065 INFO L276 IsEmpty]: Start isEmpty. Operand 12089 states and 16576 transitions. [2023-04-03 02:45:43,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 02:45:43,071 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:45:43,071 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 02:45:43,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-03 02:45:43,071 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:45:43,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:45:43,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1667854744, now seen corresponding path program 1 times [2023-04-03 02:45:43,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:45:43,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802278532] [2023-04-03 02:45:43,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:45:43,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:45:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:45:43,376 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 02:45:43,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:45:43,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802278532] [2023-04-03 02:45:43,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802278532] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:45:43,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:45:43,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:45:43,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204669519] [2023-04-03 02:45:43,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:45:43,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:45:43,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:45:43,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:45:43,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:45:43,377 INFO L87 Difference]: Start difference. First operand 12089 states and 16576 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 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 02:45:52,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:45:52,675 INFO L93 Difference]: Finished difference Result 37256 states and 51409 transitions. [2023-04-03 02:45:52,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:45:52,675 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 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 02:45:52,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:45:52,722 INFO L225 Difference]: With dead ends: 37256 [2023-04-03 02:45:52,722 INFO L226 Difference]: Without dead ends: 27740 [2023-04-03 02:45:52,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 02:45:52,740 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 1602 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 02:45:52,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1602 Valid, 1865 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 02:45:52,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27740 states. [2023-04-03 02:45:56,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27740 to 12069. [2023-04-03 02:45:56,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12069 states, 12059 states have (on average 1.3716726096691267) internal successors, (16541), 12065 states have internal predecessors, (16541), 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 02:45:56,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12069 states to 12069 states and 16544 transitions. [2023-04-03 02:45:56,398 INFO L78 Accepts]: Start accepts. Automaton has 12069 states and 16544 transitions. Word has length 71 [2023-04-03 02:45:56,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:45:56,398 INFO L495 AbstractCegarLoop]: Abstraction has 12069 states and 16544 transitions. [2023-04-03 02:45:56,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 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 02:45:56,398 INFO L276 IsEmpty]: Start isEmpty. Operand 12069 states and 16544 transitions. [2023-04-03 02:45:56,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 02:45:56,403 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:45:56,403 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 02:45:56,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-03 02:45:56,403 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:45:56,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:45:56,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1357180974, now seen corresponding path program 1 times [2023-04-03 02:45:56,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:45:56,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918444660] [2023-04-03 02:45:56,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:45:56,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:45:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:45:56,682 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 02:45:56,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:45:56,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918444660] [2023-04-03 02:45:56,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918444660] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:45:56,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:45:56,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:45:56,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665605379] [2023-04-03 02:45:56,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:45:56,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:45:56,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:45:56,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:45:56,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:45:56,686 INFO L87 Difference]: Start difference. First operand 12069 states and 16544 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 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 02:46:13,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:46:13,185 INFO L93 Difference]: Finished difference Result 54193 states and 75014 transitions. [2023-04-03 02:46:13,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-03 02:46:13,185 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 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 02:46:13,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:46:13,253 INFO L225 Difference]: With dead ends: 54193 [2023-04-03 02:46:13,254 INFO L226 Difference]: Without dead ends: 44702 [2023-04-03 02:46:13,273 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 02:46:13,273 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 2842 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2842 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 02:46:13,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2842 Valid, 1962 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1655 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 02:46:13,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44702 states. [2023-04-03 02:46:17,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44702 to 12060. [2023-04-03 02:46:17,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12060 states, 12050 states have (on average 1.3712863070539418) internal successors, (16524), 12056 states have internal predecessors, (16524), 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 02:46:17,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12060 states to 12060 states and 16527 transitions. [2023-04-03 02:46:17,420 INFO L78 Accepts]: Start accepts. Automaton has 12060 states and 16527 transitions. Word has length 71 [2023-04-03 02:46:17,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:46:17,421 INFO L495 AbstractCegarLoop]: Abstraction has 12060 states and 16527 transitions. [2023-04-03 02:46:17,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 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 02:46:17,421 INFO L276 IsEmpty]: Start isEmpty. Operand 12060 states and 16527 transitions. [2023-04-03 02:46:17,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 02:46:17,425 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:46:17,426 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 02:46:17,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-03 02:46:17,426 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 02:46:17,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:46:17,426 INFO L85 PathProgramCache]: Analyzing trace with hash -228641548, now seen corresponding path program 1 times [2023-04-03 02:46:17,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:46:17,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756042010] [2023-04-03 02:46:17,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:46:17,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:46:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:46:18,028 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 02:46:18,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:46:18,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756042010] [2023-04-03 02:46:18,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756042010] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:46:18,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:46:18,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 02:46:18,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986640249] [2023-04-03 02:46:18,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:46:18,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 02:46:18,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:46:18,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 02:46:18,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 02:46:18,030 INFO L87 Difference]: Start difference. First operand 12060 states and 16527 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 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 02:46:40,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:46:40,249 INFO L93 Difference]: Finished difference Result 63084 states and 87649 transitions. [2023-04-03 02:46:40,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-03 02:46:40,250 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 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 72 [2023-04-03 02:46:40,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:46:40,354 INFO L225 Difference]: With dead ends: 63084 [2023-04-03 02:46:40,354 INFO L226 Difference]: Without dead ends: 53437 [2023-04-03 02:46:40,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2023-04-03 02:46:40,376 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 3003 mSDsluCounter, 4707 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3003 SdHoareTripleChecker+Valid, 5575 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 02:46:40,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3003 Valid, 5575 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 02:46:40,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53437 states. [2023-04-03 02:46:45,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53437 to 11877. [2023-04-03 02:46:45,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11877 states, 11868 states have (on average 1.3724300640377485) internal successors, (16288), 11873 states have internal predecessors, (16288), 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 02:46:45,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11877 states to 11877 states and 16291 transitions. [2023-04-03 02:46:45,179 INFO L78 Accepts]: Start accepts. Automaton has 11877 states and 16291 transitions. Word has length 72 [2023-04-03 02:46:45,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:46:45,179 INFO L495 AbstractCegarLoop]: Abstraction has 11877 states and 16291 transitions. [2023-04-03 02:46:45,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 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 02:46:45,179 INFO L276 IsEmpty]: Start isEmpty. Operand 11877 states and 16291 transitions. [2023-04-03 02:46:45,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 02:46:45,184 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:46:45,184 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 02:46:45,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-03 02:46:45,184 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:46:45,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:46:45,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1205828330, now seen corresponding path program 1 times [2023-04-03 02:46:45,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:46:45,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957680915] [2023-04-03 02:46:45,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:46:45,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:46:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:46:45,682 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 02:46:45,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:46:45,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957680915] [2023-04-03 02:46:45,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957680915] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:46:45,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:46:45,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-03 02:46:45,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088766256] [2023-04-03 02:46:45,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:46:45,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-03 02:46:45,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:46:45,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-03 02:46:45,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-03 02:46:45,683 INFO L87 Difference]: Start difference. First operand 11877 states and 16291 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 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 02:47:07,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:47:07,650 INFO L93 Difference]: Finished difference Result 52967 states and 73556 transitions. [2023-04-03 02:47:07,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 02:47:07,651 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 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 72 [2023-04-03 02:47:07,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:47:07,729 INFO L225 Difference]: With dead ends: 52967 [2023-04-03 02:47:07,730 INFO L226 Difference]: Without dead ends: 43243 [2023-04-03 02:47:07,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2023-04-03 02:47:07,746 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 3091 mSDsluCounter, 2203 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3091 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 02:47:07,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3091 Valid, 2957 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 02:47:07,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43243 states. [2023-04-03 02:47:13,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43243 to 11653. [2023-04-03 02:47:13,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11653 states, 11645 states have (on average 1.3714899098325462) internal successors, (15971), 11649 states have internal predecessors, (15971), 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 02:47:13,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11653 states to 11653 states and 15974 transitions. [2023-04-03 02:47:13,451 INFO L78 Accepts]: Start accepts. Automaton has 11653 states and 15974 transitions. Word has length 72 [2023-04-03 02:47:13,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:47:13,451 INFO L495 AbstractCegarLoop]: Abstraction has 11653 states and 15974 transitions. [2023-04-03 02:47:13,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 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 02:47:13,451 INFO L276 IsEmpty]: Start isEmpty. Operand 11653 states and 15974 transitions. [2023-04-03 02:47:13,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 02:47:13,456 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:47:13,456 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 02:47:13,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-03 02:47:13,456 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:47:13,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:47:13,457 INFO L85 PathProgramCache]: Analyzing trace with hash 613058861, now seen corresponding path program 1 times [2023-04-03 02:47:13,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:47:13,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292145919] [2023-04-03 02:47:13,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:47:13,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:47:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:47:13,563 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 02:47:13,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:47:13,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292145919] [2023-04-03 02:47:13,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292145919] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:47:13,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:47:13,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:47:13,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924133343] [2023-04-03 02:47:13,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:47:13,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:47:13,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:47:13,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:47:13,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:47:13,564 INFO L87 Difference]: Start difference. First operand 11653 states and 15974 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 02:47:19,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:47:19,330 INFO L93 Difference]: Finished difference Result 16945 states and 23312 transitions. [2023-04-03 02:47:19,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:47:19,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 72 [2023-04-03 02:47:19,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:47:19,345 INFO L225 Difference]: With dead ends: 16945 [2023-04-03 02:47:19,346 INFO L226 Difference]: Without dead ends: 11659 [2023-04-03 02:47:19,352 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 02:47:19,352 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 355 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:47:19,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 1158 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 02:47:19,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11659 states. [2023-04-03 02:47:24,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11659 to 11653. [2023-04-03 02:47:24,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11653 states, 11645 states have (on average 1.3592099613568054) internal successors, (15828), 11649 states have internal predecessors, (15828), 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 02:47:24,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11653 states to 11653 states and 15831 transitions. [2023-04-03 02:47:24,941 INFO L78 Accepts]: Start accepts. Automaton has 11653 states and 15831 transitions. Word has length 72 [2023-04-03 02:47:24,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:47:24,941 INFO L495 AbstractCegarLoop]: Abstraction has 11653 states and 15831 transitions. [2023-04-03 02:47:24,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 02:47:24,942 INFO L276 IsEmpty]: Start isEmpty. Operand 11653 states and 15831 transitions. [2023-04-03 02:47:24,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 02:47:24,946 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:47:24,946 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 02:47:24,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-03 02:47:24,946 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:47:24,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:47:24,947 INFO L85 PathProgramCache]: Analyzing trace with hash -464011074, now seen corresponding path program 1 times [2023-04-03 02:47:24,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:47:24,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399384921] [2023-04-03 02:47:24,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:47:24,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:47:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:47:25,449 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 02:47:25,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:47:25,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399384921] [2023-04-03 02:47:25,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399384921] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:47:25,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:47:25,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 02:47:25,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003521745] [2023-04-03 02:47:25,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:47:25,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 02:47:25,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:47:25,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 02:47:25,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-04-03 02:47:25,451 INFO L87 Difference]: Start difference. First operand 11653 states and 15831 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 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 02:47:47,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:47:47,109 INFO L93 Difference]: Finished difference Result 47383 states and 65201 transitions. [2023-04-03 02:47:47,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-03 02:47:47,109 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 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 72 [2023-04-03 02:47:47,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:47:47,172 INFO L225 Difference]: With dead ends: 47383 [2023-04-03 02:47:47,173 INFO L226 Difference]: Without dead ends: 37638 [2023-04-03 02:47:47,192 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 02:47:47,193 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 3232 mSDsluCounter, 3554 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3232 SdHoareTripleChecker+Valid, 4432 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 02:47:47,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3232 Valid, 4432 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 02:47:47,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37638 states. [2023-04-03 02:47:53,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37638 to 11376. [2023-04-03 02:47:53,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11376 states, 11370 states have (on average 1.3604221635883904) internal successors, (15468), 11372 states have internal predecessors, (15468), 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 02:47:53,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11376 states to 11376 states and 15471 transitions. [2023-04-03 02:47:53,479 INFO L78 Accepts]: Start accepts. Automaton has 11376 states and 15471 transitions. Word has length 72 [2023-04-03 02:47:53,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:47:53,479 INFO L495 AbstractCegarLoop]: Abstraction has 11376 states and 15471 transitions. [2023-04-03 02:47:53,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 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 02:47:53,479 INFO L276 IsEmpty]: Start isEmpty. Operand 11376 states and 15471 transitions. [2023-04-03 02:47:53,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-03 02:47:53,484 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:47:53,484 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, 1] [2023-04-03 02:47:53,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-03 02:47:53,485 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:47:53,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:47:53,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1254230866, now seen corresponding path program 1 times [2023-04-03 02:47:53,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:47:53,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849094813] [2023-04-03 02:47:53,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:47:53,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:47:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:47:53,551 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 02:47:53,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:47:53,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849094813] [2023-04-03 02:47:53,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849094813] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:47:53,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:47:53,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:47:53,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033971314] [2023-04-03 02:47:53,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:47:53,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:47:53,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:47:53,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:47:53,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:47:53,552 INFO L87 Difference]: Start difference. First operand 11376 states and 15471 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 02:48:02,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:48:02,564 INFO L93 Difference]: Finished difference Result 21341 states and 29135 transitions. [2023-04-03 02:48:02,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:48:02,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 74 [2023-04-03 02:48:02,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:48:02,588 INFO L225 Difference]: With dead ends: 21341 [2023-04-03 02:48:02,588 INFO L226 Difference]: Without dead ends: 15586 [2023-04-03 02:48:02,597 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 02:48:02,597 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 327 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:48:02,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 430 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:48:02,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15586 states. [2023-04-03 02:48:11,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15586 to 15584. [2023-04-03 02:48:11,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15584 states, 15580 states have (on average 1.3646983311938383) internal successors, (21262), 15580 states have internal predecessors, (21262), 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 02:48:11,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15584 states to 15584 states and 21265 transitions. [2023-04-03 02:48:11,642 INFO L78 Accepts]: Start accepts. Automaton has 15584 states and 21265 transitions. Word has length 74 [2023-04-03 02:48:11,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:48:11,643 INFO L495 AbstractCegarLoop]: Abstraction has 15584 states and 21265 transitions. [2023-04-03 02:48:11,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 02:48:11,643 INFO L276 IsEmpty]: Start isEmpty. Operand 15584 states and 21265 transitions. [2023-04-03 02:48:11,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-03 02:48:11,649 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:48:11,649 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, 1, 1, 1] [2023-04-03 02:48:11,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-03 02:48:11,649 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:48:11,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:48:11,650 INFO L85 PathProgramCache]: Analyzing trace with hash -572722722, now seen corresponding path program 1 times [2023-04-03 02:48:11,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:48:11,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221765700] [2023-04-03 02:48:11,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:48:11,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:48:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:48:11,822 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 02:48:11,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:48:11,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221765700] [2023-04-03 02:48:11,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221765700] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:48:11,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:48:11,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 02:48:11,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206645761] [2023-04-03 02:48:11,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:48:11,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 02:48:11,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:48:11,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 02:48:11,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-04-03 02:48:11,824 INFO L87 Difference]: Start difference. First operand 15584 states and 21265 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 02:48:20,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:48:20,804 INFO L93 Difference]: Finished difference Result 21974 states and 30007 transitions. [2023-04-03 02:48:20,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-03 02:48:20,806 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 76 [2023-04-03 02:48:20,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:48:20,827 INFO L225 Difference]: With dead ends: 21974 [2023-04-03 02:48:20,827 INFO L226 Difference]: Without dead ends: 14738 [2023-04-03 02:48:20,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-04-03 02:48:20,836 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 904 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:48:20,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 998 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:48:20,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14738 states. [2023-04-03 02:48:27,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14738 to 11788. [2023-04-03 02:48:27,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11788 states, 11784 states have (on average 1.3490325865580448) internal successors, (15897), 11784 states have internal predecessors, (15897), 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 02:48:27,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11788 states to 11788 states and 15900 transitions. [2023-04-03 02:48:27,903 INFO L78 Accepts]: Start accepts. Automaton has 11788 states and 15900 transitions. Word has length 76 [2023-04-03 02:48:27,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:48:27,904 INFO L495 AbstractCegarLoop]: Abstraction has 11788 states and 15900 transitions. [2023-04-03 02:48:27,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 02:48:27,904 INFO L276 IsEmpty]: Start isEmpty. Operand 11788 states and 15900 transitions. [2023-04-03 02:48:27,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-03 02:48:27,909 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:48:27,909 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, 1, 1, 1, 1] [2023-04-03 02:48:27,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-03 02:48:27,910 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-03 02:48:27,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:48:27,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1991816409, now seen corresponding path program 1 times [2023-04-03 02:48:27,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:48:27,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521309841] [2023-04-03 02:48:27,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:48:27,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:48:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:48:28,042 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 02:48:28,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:48:28,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521309841] [2023-04-03 02:48:28,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521309841] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:48:28,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:48:28,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:48:28,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549017693] [2023-04-03 02:48:28,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:48:28,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:48:28,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:48:28,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:48:28,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:48:28,043 INFO L87 Difference]: Start difference. First operand 11788 states and 15900 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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)