/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/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:09:13,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:09:13,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:09:13,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:09:13,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:09:13,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:09:13,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:09:13,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:09:13,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:09:14,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:09:14,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:09:14,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:09:14,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:09:14,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:09:14,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:09:14,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:09:14,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:09:14,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:09:14,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:09:14,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:09:14,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:09:14,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:09:14,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:09:14,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:09:14,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 06:09:14,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 06:09:14,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 06:09:14,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 06:09:14,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 06:09:14,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 06:09:14,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:09:14,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:09:14,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:09:14,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:09:14,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:09:14,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:09:14,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:09:14,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:09:14,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:09:14,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:09:14,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:09:14,036 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 06:09:14,062 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:09:14,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:09:14,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:09:14,063 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:09:14,065 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:09:14,065 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:09:14,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:09:14,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:09:14,065 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:09:14,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:09:14,066 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:09:14,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:09:14,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:09:14,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:09:14,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:09:14,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:09:14,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:09:14,067 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:09:14,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:09:14,067 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:09:14,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:09:14,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:09:14,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:09:14,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:09:14,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:09:14,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:09:14,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:09:14,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:09:14,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:09:14,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:09:14,069 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:09:14,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:09:14,069 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:09:14,069 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:09:14,069 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:09:14,069 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:09:14,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:09:14,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:09:14,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:09:14,328 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:09:14,329 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:09:14,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2023-04-02 06:09:15,565 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:09:16,014 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:09:16,015 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2023-04-02 06:09:16,056 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d2f189f0/e7c77eca069b41a5b1f806ddfacd9c08/FLAG85388188e [2023-04-02 06:09:16,072 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d2f189f0/e7c77eca069b41a5b1f806ddfacd9c08 [2023-04-02 06:09:16,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:09:16,077 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:09:16,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:09:16,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:09:16,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:09:16,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:09:16" (1/1) ... [2023-04-02 06:09:16,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@571c8e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:16, skipping insertion in model container [2023-04-02 06:09:16,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:09:16" (1/1) ... [2023-04-02 06:09:16,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:09:16,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:09:16,676 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32048,32061] [2023-04-02 06:09:16,785 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[55802,55815] [2023-04-02 06:09:16,821 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[64372,64385] [2023-04-02 06:09:16,905 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[91775,91788] [2023-04-02 06:09:16,969 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[106857,106870] [2023-04-02 06:09:17,013 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[123963,123976] [2023-04-02 06:09:17,068 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[141761,141774] [2023-04-02 06:09:17,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:09:17,277 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:09:17,366 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32048,32061] [2023-04-02 06:09:17,406 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[55802,55815] [2023-04-02 06:09:17,419 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[64372,64385] [2023-04-02 06:09:17,462 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[91775,91788] [2023-04-02 06:09:17,486 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[106857,106870] [2023-04-02 06:09:17,513 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[123963,123976] [2023-04-02 06:09:17,543 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[141761,141774] [2023-04-02 06:09:17,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:09:17,696 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:09:17,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:17 WrapperNode [2023-04-02 06:09:17,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:09:17,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:09:17,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:09:17,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:09:17,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:17" (1/1) ... [2023-04-02 06:09:17,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:17" (1/1) ... [2023-04-02 06:09:17,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:17" (1/1) ... [2023-04-02 06:09:17,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:17" (1/1) ... [2023-04-02 06:09:17,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:17" (1/1) ... [2023-04-02 06:09:17,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:17" (1/1) ... [2023-04-02 06:09:17,924 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:17" (1/1) ... [2023-04-02 06:09:17,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:17" (1/1) ... [2023-04-02 06:09:17,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:09:17,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:09:17,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:09:17,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:09:17,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:17" (1/1) ... [2023-04-02 06:09:17,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:09:17,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:09:18,003 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) [2023-04-02 06:09:18,025 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 [2023-04-02 06:09:18,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:09:18,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:09:18,043 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:09:18,043 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:09:18,044 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:09:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:09:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:09:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:09:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:09:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:09:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:09:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:09:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:09:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:09:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:09:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:09:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:09:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:09:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:09:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:09:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:09:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:09:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:09:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:09:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:09:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:09:18,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:09:18,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:09:18,475 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:09:18,477 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:09:21,809 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:09:21,840 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:09:21,841 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:09:21,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:09:21 BoogieIcfgContainer [2023-04-02 06:09:21,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:09:21,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:09:21,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:09:21,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:09:21,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:09:16" (1/3) ... [2023-04-02 06:09:21,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f6333ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:09:21, skipping insertion in model container [2023-04-02 06:09:21,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:17" (2/3) ... [2023-04-02 06:09:21,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f6333ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:09:21, skipping insertion in model container [2023-04-02 06:09:21,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:09:21" (3/3) ... [2023-04-02 06:09:21,860 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2023-04-02 06:09:21,877 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:09:21,878 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-04-02 06:09:21,967 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:09:21,975 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=PETRI_NET, 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;@1d1bc990, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:09:21,976 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-04-02 06:09:21,988 INFO L276 IsEmpty]: Start isEmpty. Operand has 2051 states, 2039 states have (on average 1.7758705247670428) internal successors, (3621), 2046 states have internal predecessors, (3621), 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) [2023-04-02 06:09:22,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-02 06:09:22,014 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:22,015 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] [2023-04-02 06:09:22,016 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:09:22,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:22,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1107976478, now seen corresponding path program 1 times [2023-04-02 06:09:22,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:22,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627750465] [2023-04-02 06:09:22,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:22,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:24,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:09:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:09:24,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:09:24,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627750465] [2023-04-02 06:09:24,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627750465] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:09:24,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:09:24,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:09:24,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677499687] [2023-04-02 06:09:24,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:09:24,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:09:24,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:09:24,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:09:24,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:09:24,825 INFO L87 Difference]: Start difference. First operand has 2051 states, 2039 states have (on average 1.7758705247670428) internal successors, (3621), 2046 states have internal predecessors, (3621), 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 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:39,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:09:39,400 INFO L93 Difference]: Finished difference Result 3324 states and 5757 transitions. [2023-04-02 06:09:39,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:09:39,402 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-02 06:09:39,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:09:39,429 INFO L225 Difference]: With dead ends: 3324 [2023-04-02 06:09:39,430 INFO L226 Difference]: Without dead ends: 2145 [2023-04-02 06:09:39,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:09:39,447 INFO L413 NwaCegarLoop]: 1728 mSDtfsCounter, 10215 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 4493 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10215 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 4526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:09:39,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10215 Valid, 2262 Invalid, 4526 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 4493 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2023-04-02 06:09:39,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2023-04-02 06:09:39,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 2130. [2023-04-02 06:09:39,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2130 states, 2120 states have (on average 1.3033018867924528) internal successors, (2763), 2126 states have internal predecessors, (2763), 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) [2023-04-02 06:09:39,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2130 states to 2130 states and 2766 transitions. [2023-04-02 06:09:39,635 INFO L78 Accepts]: Start accepts. Automaton has 2130 states and 2766 transitions. Word has length 69 [2023-04-02 06:09:39,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:09:39,637 INFO L495 AbstractCegarLoop]: Abstraction has 2130 states and 2766 transitions. [2023-04-02 06:09:39,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:39,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2130 states and 2766 transitions. [2023-04-02 06:09:39,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 06:09:39,645 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:39,646 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] [2023-04-02 06:09:39,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:09:39,646 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:09:39,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:39,648 INFO L85 PathProgramCache]: Analyzing trace with hash -680382372, now seen corresponding path program 1 times [2023-04-02 06:09:39,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:39,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210335661] [2023-04-02 06:09:39,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:39,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:41,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:09:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:09:41,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:09:41,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210335661] [2023-04-02 06:09:41,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210335661] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:09:41,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:09:41,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:09:41,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164297334] [2023-04-02 06:09:41,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:09:41,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:09:41,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:09:41,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:09:41,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:09:41,587 INFO L87 Difference]: Start difference. First operand 2130 states and 2766 transitions. Second operand has 6 states, 5 states have (on average 13.4) internal successors, (67), 4 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) [2023-04-02 06:09:51,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:09:51,285 INFO L93 Difference]: Finished difference Result 3791 states and 4934 transitions. [2023-04-02 06:09:51,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:09:51,285 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 4 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 [2023-04-02 06:09:51,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:09:51,296 INFO L225 Difference]: With dead ends: 3791 [2023-04-02 06:09:51,297 INFO L226 Difference]: Without dead ends: 2515 [2023-04-02 06:09:51,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:09:51,301 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 6516 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 2986 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6516 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 3024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:09:51,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6516 Valid, 1261 Invalid, 3024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2986 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-04-02 06:09:51,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2023-04-02 06:09:51,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2505. [2023-04-02 06:09:51,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2495 states have (on average 1.305811623246493) internal successors, (3258), 2501 states have internal predecessors, (3258), 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) [2023-04-02 06:09:51,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 3261 transitions. [2023-04-02 06:09:51,454 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 3261 transitions. Word has length 70 [2023-04-02 06:09:51,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:09:51,455 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 3261 transitions. [2023-04-02 06:09:51,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 4 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) [2023-04-02 06:09:51,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 3261 transitions. [2023-04-02 06:09:51,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 06:09:51,460 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:51,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:09:51,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:09:51,462 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:09:51,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:51,470 INFO L85 PathProgramCache]: Analyzing trace with hash -457283186, now seen corresponding path program 1 times [2023-04-02 06:09:51,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:51,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640140913] [2023-04-02 06:09:51,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:51,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:53,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:09:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:53,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:09:53,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:09:53,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640140913] [2023-04-02 06:09:53,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640140913] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:09:53,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:09:53,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:09:53,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587105806] [2023-04-02 06:09:53,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:09:53,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:09:53,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:09:53,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:09:53,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:09:53,340 INFO L87 Difference]: Start difference. First operand 2505 states and 3261 transitions. Second operand has 6 states, 5 states have (on average 13.4) internal successors, (67), 4 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) [2023-04-02 06:10:01,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:01,767 INFO L93 Difference]: Finished difference Result 5237 states and 6856 transitions. [2023-04-02 06:10:01,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:10:01,769 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 4 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 [2023-04-02 06:10:01,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:01,784 INFO L225 Difference]: With dead ends: 5237 [2023-04-02 06:10:01,784 INFO L226 Difference]: Without dead ends: 3598 [2023-04-02 06:10:01,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:10:01,790 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 6270 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 2900 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6270 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 2956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:01,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6270 Valid, 1272 Invalid, 2956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2900 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-04-02 06:10:01,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3598 states. [2023-04-02 06:10:01,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3598 to 3582. [2023-04-02 06:10:01,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 3572 states have (on average 1.2905935050391937) internal successors, (4610), 3578 states have internal predecessors, (4610), 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) [2023-04-02 06:10:02,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 4613 transitions. [2023-04-02 06:10:02,003 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 4613 transitions. Word has length 70 [2023-04-02 06:10:02,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:02,003 INFO L495 AbstractCegarLoop]: Abstraction has 3582 states and 4613 transitions. [2023-04-02 06:10:02,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 4 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) [2023-04-02 06:10:02,004 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 4613 transitions. [2023-04-02 06:10:02,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:10:02,008 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:02,009 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] [2023-04-02 06:10:02,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:10:02,009 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:10:02,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:02,010 INFO L85 PathProgramCache]: Analyzing trace with hash 292728898, now seen corresponding path program 1 times [2023-04-02 06:10:02,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:02,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413112388] [2023-04-02 06:10:02,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:02,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:03,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:03,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:10:03,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:03,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413112388] [2023-04-02 06:10:03,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413112388] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:03,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:03,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:10:03,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492721997] [2023-04-02 06:10:03,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:03,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:10:03,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:03,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:10:03,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:10:03,959 INFO L87 Difference]: Start difference. First operand 3582 states and 4613 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 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) [2023-04-02 06:10:12,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:12,730 INFO L93 Difference]: Finished difference Result 8121 states and 10650 transitions. [2023-04-02 06:10:12,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:10:12,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 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 [2023-04-02 06:10:12,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:12,748 INFO L225 Difference]: With dead ends: 8121 [2023-04-02 06:10:12,749 INFO L226 Difference]: Without dead ends: 5321 [2023-04-02 06:10:12,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:10:12,761 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 6583 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 2933 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6583 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 2968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:12,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6583 Valid, 1326 Invalid, 2968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2933 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-04-02 06:10:12,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5321 states. [2023-04-02 06:10:13,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5321 to 5315. [2023-04-02 06:10:13,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5315 states, 5305 states have (on average 1.3000942507068802) internal successors, (6897), 5311 states have internal predecessors, (6897), 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) [2023-04-02 06:10:13,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5315 states to 5315 states and 6900 transitions. [2023-04-02 06:10:13,103 INFO L78 Accepts]: Start accepts. Automaton has 5315 states and 6900 transitions. Word has length 71 [2023-04-02 06:10:13,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:13,105 INFO L495 AbstractCegarLoop]: Abstraction has 5315 states and 6900 transitions. [2023-04-02 06:10:13,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 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) [2023-04-02 06:10:13,105 INFO L276 IsEmpty]: Start isEmpty. Operand 5315 states and 6900 transitions. [2023-04-02 06:10:13,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:10:13,111 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:13,111 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] [2023-04-02 06:10:13,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:10:13,112 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:10:13,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:13,112 INFO L85 PathProgramCache]: Analyzing trace with hash -694630220, now seen corresponding path program 1 times [2023-04-02 06:10:13,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:13,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180312497] [2023-04-02 06:10:13,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:13,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:15,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:10:15,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:15,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180312497] [2023-04-02 06:10:15,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180312497] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:15,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:15,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:10:15,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154520685] [2023-04-02 06:10:15,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:15,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:10:15,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:15,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:10:15,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:10:15,557 INFO L87 Difference]: Start difference. First operand 5315 states and 6900 transitions. Second operand has 11 states, 10 states have (on average 6.8) internal successors, (68), 9 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) [2023-04-02 06:10:27,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:27,384 INFO L93 Difference]: Finished difference Result 12506 states and 17251 transitions. [2023-04-02 06:10:27,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 06:10:27,385 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 9 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 [2023-04-02 06:10:27,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:27,424 INFO L225 Difference]: With dead ends: 12506 [2023-04-02 06:10:27,424 INFO L226 Difference]: Without dead ends: 11061 [2023-04-02 06:10:27,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=227, Invalid=643, Unknown=0, NotChecked=0, Total=870 [2023-04-02 06:10:27,431 INFO L413 NwaCegarLoop]: 988 mSDtfsCounter, 10287 mSDsluCounter, 4329 mSDsCounter, 0 mSdLazyCounter, 6947 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10287 SdHoareTripleChecker+Valid, 5317 SdHoareTripleChecker+Invalid, 6969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 6947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:27,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10287 Valid, 5317 Invalid, 6969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 6947 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2023-04-02 06:10:27,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11061 states. [2023-04-02 06:10:27,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11061 to 5322. [2023-04-02 06:10:27,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5322 states, 5312 states have (on average 1.2996987951807228) internal successors, (6904), 5318 states have internal predecessors, (6904), 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) [2023-04-02 06:10:28,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5322 states to 5322 states and 6907 transitions. [2023-04-02 06:10:28,003 INFO L78 Accepts]: Start accepts. Automaton has 5322 states and 6907 transitions. Word has length 71 [2023-04-02 06:10:28,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:28,003 INFO L495 AbstractCegarLoop]: Abstraction has 5322 states and 6907 transitions. [2023-04-02 06:10:28,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 9 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) [2023-04-02 06:10:28,004 INFO L276 IsEmpty]: Start isEmpty. Operand 5322 states and 6907 transitions. [2023-04-02 06:10:28,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 06:10:28,009 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:28,010 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] [2023-04-02 06:10:28,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:10:28,010 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:10:28,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:28,011 INFO L85 PathProgramCache]: Analyzing trace with hash 395443441, now seen corresponding path program 1 times [2023-04-02 06:10:28,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:28,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828215531] [2023-04-02 06:10:28,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:28,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:30,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:10:30,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:30,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828215531] [2023-04-02 06:10:30,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828215531] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:30,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:30,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:10:30,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355205448] [2023-04-02 06:10:30,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:30,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:10:30,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:30,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:10:30,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:10:30,223 INFO L87 Difference]: Start difference. First operand 5322 states and 6907 transitions. Second operand has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:10:39,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:39,862 INFO L93 Difference]: Finished difference Result 6520 states and 8529 transitions. [2023-04-02 06:10:39,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 06:10:39,865 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-02 06:10:39,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:39,893 INFO L225 Difference]: With dead ends: 6520 [2023-04-02 06:10:39,893 INFO L226 Difference]: Without dead ends: 6514 [2023-04-02 06:10:39,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2023-04-02 06:10:39,896 INFO L413 NwaCegarLoop]: 945 mSDtfsCounter, 4373 mSDsluCounter, 3047 mSDsCounter, 0 mSdLazyCounter, 5228 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4373 SdHoareTripleChecker+Valid, 3992 SdHoareTripleChecker+Invalid, 5256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:39,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4373 Valid, 3992 Invalid, 5256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 5228 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-04-02 06:10:39,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6514 states. [2023-04-02 06:10:40,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6514 to 5322. [2023-04-02 06:10:40,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5322 states, 5312 states have (on average 1.2995105421686748) internal successors, (6903), 5318 states have internal predecessors, (6903), 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) [2023-04-02 06:10:40,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5322 states to 5322 states and 6906 transitions. [2023-04-02 06:10:40,343 INFO L78 Accepts]: Start accepts. Automaton has 5322 states and 6906 transitions. Word has length 72 [2023-04-02 06:10:40,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:40,343 INFO L495 AbstractCegarLoop]: Abstraction has 5322 states and 6906 transitions. [2023-04-02 06:10:40,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:10:40,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5322 states and 6906 transitions. [2023-04-02 06:10:40,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 06:10:40,351 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:40,351 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] [2023-04-02 06:10:40,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:10:40,352 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:10:40,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:40,352 INFO L85 PathProgramCache]: Analyzing trace with hash 686244906, now seen corresponding path program 1 times [2023-04-02 06:10:40,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:40,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591690372] [2023-04-02 06:10:40,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:40,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:42,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:43,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:10:43,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:43,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591690372] [2023-04-02 06:10:43,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591690372] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:43,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:43,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:10:43,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779675417] [2023-04-02 06:10:43,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:43,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:10:43,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:43,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:10:43,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:10:43,034 INFO L87 Difference]: Start difference. First operand 5322 states and 6906 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 1 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) [2023-04-02 06:10:56,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:56,668 INFO L93 Difference]: Finished difference Result 12336 states and 17301 transitions. [2023-04-02 06:10:56,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 06:10:56,679 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-02 06:10:56,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:56,707 INFO L225 Difference]: With dead ends: 12336 [2023-04-02 06:10:56,707 INFO L226 Difference]: Without dead ends: 12332 [2023-04-02 06:10:56,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:10:56,711 INFO L413 NwaCegarLoop]: 1812 mSDtfsCounter, 9052 mSDsluCounter, 9347 mSDsCounter, 0 mSdLazyCounter, 3948 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9052 SdHoareTripleChecker+Valid, 11159 SdHoareTripleChecker+Invalid, 3972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 3948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:56,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9052 Valid, 11159 Invalid, 3972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 3948 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-04-02 06:10:56,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12332 states. [2023-04-02 06:10:57,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12332 to 5318. [2023-04-02 06:10:57,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5318 states, 5309 states have (on average 1.2993030702580524) internal successors, (6898), 5314 states have internal predecessors, (6898), 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) [2023-04-02 06:10:57,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5318 states to 5318 states and 6901 transitions. [2023-04-02 06:10:57,330 INFO L78 Accepts]: Start accepts. Automaton has 5318 states and 6901 transitions. Word has length 72 [2023-04-02 06:10:57,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:57,331 INFO L495 AbstractCegarLoop]: Abstraction has 5318 states and 6901 transitions. [2023-04-02 06:10:57,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 1 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) [2023-04-02 06:10:57,332 INFO L276 IsEmpty]: Start isEmpty. Operand 5318 states and 6901 transitions. [2023-04-02 06:10:57,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 06:10:57,338 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:57,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:10:57,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:10:57,338 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:10:57,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:57,339 INFO L85 PathProgramCache]: Analyzing trace with hash 2095605925, now seen corresponding path program 1 times [2023-04-02 06:10:57,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:57,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906372933] [2023-04-02 06:10:57,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:57,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:59,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:59,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:10:59,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:59,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906372933] [2023-04-02 06:10:59,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906372933] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:59,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:59,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:10:59,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826905813] [2023-04-02 06:10:59,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:59,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:10:59,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:59,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:10:59,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:10:59,901 INFO L87 Difference]: Start difference. First operand 5318 states and 6901 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 1 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) [2023-04-02 06:11:15,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:11:15,714 INFO L93 Difference]: Finished difference Result 14042 states and 19793 transitions. [2023-04-02 06:11:15,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 06:11:15,715 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 1 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 73 [2023-04-02 06:11:15,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:11:15,748 INFO L225 Difference]: With dead ends: 14042 [2023-04-02 06:11:15,748 INFO L226 Difference]: Without dead ends: 12695 [2023-04-02 06:11:15,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2023-04-02 06:11:15,757 INFO L413 NwaCegarLoop]: 2032 mSDtfsCounter, 9048 mSDsluCounter, 11789 mSDsCounter, 0 mSdLazyCounter, 4074 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9048 SdHoareTripleChecker+Valid, 13821 SdHoareTripleChecker+Invalid, 4095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 4074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:11:15,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9048 Valid, 13821 Invalid, 4095 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 4074 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-04-02 06:11:15,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12695 states. [2023-04-02 06:11:16,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12695 to 5269. [2023-04-02 06:11:16,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5269 states, 5261 states have (on average 1.3007032883482228) internal successors, (6843), 5265 states have internal predecessors, (6843), 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) [2023-04-02 06:11:16,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5269 states to 5269 states and 6846 transitions. [2023-04-02 06:11:16,777 INFO L78 Accepts]: Start accepts. Automaton has 5269 states and 6846 transitions. Word has length 73 [2023-04-02 06:11:16,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:11:16,778 INFO L495 AbstractCegarLoop]: Abstraction has 5269 states and 6846 transitions. [2023-04-02 06:11:16,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 1 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) [2023-04-02 06:11:16,778 INFO L276 IsEmpty]: Start isEmpty. Operand 5269 states and 6846 transitions. [2023-04-02 06:11:16,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 06:11:16,785 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:11:16,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:11:16,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:11:16,786 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:11:16,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:11:16,787 INFO L85 PathProgramCache]: Analyzing trace with hash 956098704, now seen corresponding path program 1 times [2023-04-02 06:11:16,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:11:16,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416185239] [2023-04-02 06:11:16,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:11:16,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:11:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:18,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:11:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:18,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:11:18,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:11:18,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416185239] [2023-04-02 06:11:18,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416185239] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:11:18,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:11:18,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:11:18,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567077480] [2023-04-02 06:11:18,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:11:18,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:11:18,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:11:18,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:11:18,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:11:18,957 INFO L87 Difference]: Start difference. First operand 5269 states and 6846 transitions. Second operand has 11 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 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) [2023-04-02 06:11:32,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:11:32,375 INFO L93 Difference]: Finished difference Result 12176 states and 16915 transitions. [2023-04-02 06:11:32,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 06:11:32,375 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 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 73 [2023-04-02 06:11:32,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:11:32,400 INFO L225 Difference]: With dead ends: 12176 [2023-04-02 06:11:32,400 INFO L226 Difference]: Without dead ends: 10853 [2023-04-02 06:11:32,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=196, Invalid=560, Unknown=0, NotChecked=0, Total=756 [2023-04-02 06:11:32,408 INFO L413 NwaCegarLoop]: 1138 mSDtfsCounter, 6207 mSDsluCounter, 4122 mSDsCounter, 0 mSdLazyCounter, 6673 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6207 SdHoareTripleChecker+Valid, 5260 SdHoareTripleChecker+Invalid, 6714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 6673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:11:32,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6207 Valid, 5260 Invalid, 6714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 6673 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2023-04-02 06:11:32,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10853 states. [2023-04-02 06:11:33,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10853 to 5248. [2023-04-02 06:11:33,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5248 states, 5240 states have (on average 1.3009541984732824) internal successors, (6817), 5244 states have internal predecessors, (6817), 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) [2023-04-02 06:11:33,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5248 states to 5248 states and 6820 transitions. [2023-04-02 06:11:33,669 INFO L78 Accepts]: Start accepts. Automaton has 5248 states and 6820 transitions. Word has length 73 [2023-04-02 06:11:33,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:11:33,669 INFO L495 AbstractCegarLoop]: Abstraction has 5248 states and 6820 transitions. [2023-04-02 06:11:33,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 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) [2023-04-02 06:11:33,670 INFO L276 IsEmpty]: Start isEmpty. Operand 5248 states and 6820 transitions. [2023-04-02 06:11:33,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-02 06:11:33,677 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:11:33,677 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] [2023-04-02 06:11:33,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:11:33,677 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:11:33,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:11:33,678 INFO L85 PathProgramCache]: Analyzing trace with hash 85703386, now seen corresponding path program 1 times [2023-04-02 06:11:33,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:11:33,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873533211] [2023-04-02 06:11:33,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:11:33,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:11:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:36,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:11:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:11:36,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:11:36,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873533211] [2023-04-02 06:11:36,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873533211] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:11:36,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:11:36,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:11:36,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465277812] [2023-04-02 06:11:36,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:11:36,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:11:36,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:11:36,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:11:36,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:11:36,093 INFO L87 Difference]: Start difference. First operand 5248 states and 6820 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 12 states have internal predecessors, (71), 1 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) [2023-04-02 06:11:52,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:11:52,190 INFO L93 Difference]: Finished difference Result 14182 states and 19862 transitions. [2023-04-02 06:11:52,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 06:11:52,190 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 12 states have internal predecessors, (71), 1 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 74 [2023-04-02 06:11:52,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:11:52,213 INFO L225 Difference]: With dead ends: 14182 [2023-04-02 06:11:52,213 INFO L226 Difference]: Without dead ends: 12856 [2023-04-02 06:11:52,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=188, Invalid=514, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:11:52,220 INFO L413 NwaCegarLoop]: 1800 mSDtfsCounter, 7980 mSDsluCounter, 10029 mSDsCounter, 0 mSdLazyCounter, 3937 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7980 SdHoareTripleChecker+Valid, 11829 SdHoareTripleChecker+Invalid, 3951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:11:52,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7980 Valid, 11829 Invalid, 3951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3937 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-04-02 06:11:52,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12856 states. [2023-04-02 06:11:53,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12856 to 5258. [2023-04-02 06:11:53,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5258 states, 5250 states have (on average 1.3009523809523809) internal successors, (6830), 5254 states have internal predecessors, (6830), 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) [2023-04-02 06:11:53,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5258 states to 5258 states and 6833 transitions. [2023-04-02 06:11:53,648 INFO L78 Accepts]: Start accepts. Automaton has 5258 states and 6833 transitions. Word has length 74 [2023-04-02 06:11:53,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:11:53,648 INFO L495 AbstractCegarLoop]: Abstraction has 5258 states and 6833 transitions. [2023-04-02 06:11:53,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 12 states have internal predecessors, (71), 1 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) [2023-04-02 06:11:53,649 INFO L276 IsEmpty]: Start isEmpty. Operand 5258 states and 6833 transitions. [2023-04-02 06:11:53,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-02 06:11:53,656 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:11:53,656 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] [2023-04-02 06:11:53,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:11:53,656 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:11:53,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:11:53,657 INFO L85 PathProgramCache]: Analyzing trace with hash -523243629, now seen corresponding path program 1 times [2023-04-02 06:11:53,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:11:53,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859677172] [2023-04-02 06:11:53,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:11:53,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:11:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:55,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:11:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:55,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:11:55,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:11:55,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859677172] [2023-04-02 06:11:55,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859677172] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:11:55,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:11:55,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:11:55,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794644348] [2023-04-02 06:11:55,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:11:55,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:11:55,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:11:55,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:11:55,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:11:55,716 INFO L87 Difference]: Start difference. First operand 5258 states and 6833 transitions. Second operand has 10 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 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) [2023-04-02 06:12:07,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:12:07,894 INFO L93 Difference]: Finished difference Result 7991 states and 10600 transitions. [2023-04-02 06:12:07,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 06:12:07,897 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 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 75 [2023-04-02 06:12:07,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:12:07,909 INFO L225 Difference]: With dead ends: 7991 [2023-04-02 06:12:07,910 INFO L226 Difference]: Without dead ends: 7982 [2023-04-02 06:12:07,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2023-04-02 06:12:07,912 INFO L413 NwaCegarLoop]: 1012 mSDtfsCounter, 9136 mSDsluCounter, 3106 mSDsCounter, 0 mSdLazyCounter, 5682 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9136 SdHoareTripleChecker+Valid, 4118 SdHoareTripleChecker+Invalid, 5736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 5682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:12:07,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9136 Valid, 4118 Invalid, 5736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 5682 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-04-02 06:12:07,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7982 states. [2023-04-02 06:12:09,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7982 to 5258. [2023-04-02 06:12:09,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5258 states, 5250 states have (on average 1.3007619047619048) internal successors, (6829), 5254 states have internal predecessors, (6829), 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) [2023-04-02 06:12:09,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5258 states to 5258 states and 6832 transitions. [2023-04-02 06:12:09,183 INFO L78 Accepts]: Start accepts. Automaton has 5258 states and 6832 transitions. Word has length 75 [2023-04-02 06:12:09,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:12:09,183 INFO L495 AbstractCegarLoop]: Abstraction has 5258 states and 6832 transitions. [2023-04-02 06:12:09,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 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) [2023-04-02 06:12:09,183 INFO L276 IsEmpty]: Start isEmpty. Operand 5258 states and 6832 transitions. [2023-04-02 06:12:09,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-02 06:12:09,190 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:09,191 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] [2023-04-02 06:12:09,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:12:09,191 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:12:09,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:09,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1291073901, now seen corresponding path program 1 times [2023-04-02 06:12:09,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:09,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962609154] [2023-04-02 06:12:09,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:09,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:10,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:10,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:12:10,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:10,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962609154] [2023-04-02 06:12:10,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962609154] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:12:10,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:12:10,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:12:10,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082086250] [2023-04-02 06:12:10,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:12:10,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:12:10,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:10,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:12:10,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:12:10,809 INFO L87 Difference]: Start difference. First operand 5258 states and 6832 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 1 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) [2023-04-02 06:12:19,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:12:19,740 INFO L93 Difference]: Finished difference Result 10485 states and 13786 transitions. [2023-04-02 06:12:19,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:12:19,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 1 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 75 [2023-04-02 06:12:19,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:12:19,749 INFO L225 Difference]: With dead ends: 10485 [2023-04-02 06:12:19,749 INFO L226 Difference]: Without dead ends: 6401 [2023-04-02 06:12:19,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:12:19,757 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1559 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:12:19,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1559 Valid, 2095 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-04-02 06:12:19,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6401 states. [2023-04-02 06:12:21,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6401 to 6390. [2023-04-02 06:12:21,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6390 states, 6383 states have (on average 1.301268995770014) internal successors, (8306), 6386 states have internal predecessors, (8306), 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) [2023-04-02 06:12:21,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6390 states to 6390 states and 8309 transitions. [2023-04-02 06:12:21,439 INFO L78 Accepts]: Start accepts. Automaton has 6390 states and 8309 transitions. Word has length 75 [2023-04-02 06:12:21,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:12:21,439 INFO L495 AbstractCegarLoop]: Abstraction has 6390 states and 8309 transitions. [2023-04-02 06:12:21,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 1 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) [2023-04-02 06:12:21,439 INFO L276 IsEmpty]: Start isEmpty. Operand 6390 states and 8309 transitions. [2023-04-02 06:12:21,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-02 06:12:21,447 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:21,447 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] [2023-04-02 06:12:21,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:12:21,448 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:12:21,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:21,448 INFO L85 PathProgramCache]: Analyzing trace with hash -217033739, now seen corresponding path program 1 times [2023-04-02 06:12:21,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:21,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545160687] [2023-04-02 06:12:21,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:21,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:22,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:22,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:12:22,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:22,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545160687] [2023-04-02 06:12:22,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545160687] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:12:22,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:12:22,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:12:22,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444181834] [2023-04-02 06:12:22,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:12:22,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:12:22,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:22,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:12:22,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:12:22,998 INFO L87 Difference]: Start difference. First operand 6390 states and 8309 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 1 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) [2023-04-02 06:12:31,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:12:31,099 INFO L93 Difference]: Finished difference Result 10219 states and 13760 transitions. [2023-04-02 06:12:31,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:12:31,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 1 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 75 [2023-04-02 06:12:31,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:12:31,108 INFO L225 Difference]: With dead ends: 10219 [2023-04-02 06:12:31,108 INFO L226 Difference]: Without dead ends: 6200 [2023-04-02 06:12:31,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:12:31,114 INFO L413 NwaCegarLoop]: 1223 mSDtfsCounter, 1188 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:12:31,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 1680 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-04-02 06:12:31,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6200 states. [2023-04-02 06:12:33,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6200 to 6196. [2023-04-02 06:12:33,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6196 states, 6190 states have (on average 1.3410339256865913) internal successors, (8301), 6192 states have internal predecessors, (8301), 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) [2023-04-02 06:12:33,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 8304 transitions. [2023-04-02 06:12:33,136 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 8304 transitions. Word has length 75 [2023-04-02 06:12:33,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:12:33,136 INFO L495 AbstractCegarLoop]: Abstraction has 6196 states and 8304 transitions. [2023-04-02 06:12:33,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 1 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) [2023-04-02 06:12:33,137 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 8304 transitions. [2023-04-02 06:12:33,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-02 06:12:33,144 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:33,144 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] [2023-04-02 06:12:33,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:12:33,145 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:12:33,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:33,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1074288231, now seen corresponding path program 1 times [2023-04-02 06:12:33,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:33,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610744508] [2023-04-02 06:12:33,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:33,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:35,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:35,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:12:35,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:35,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610744508] [2023-04-02 06:12:35,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610744508] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:12:35,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:12:35,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:12:35,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451127223] [2023-04-02 06:12:35,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:12:35,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 06:12:35,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:35,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 06:12:35,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:12:35,359 INFO L87 Difference]: Start difference. First operand 6196 states and 8304 transitions. Second operand has 15 states, 14 states have (on average 5.214285714285714) internal successors, (73), 13 states have internal predecessors, (73), 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) [2023-04-02 06:12:53,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:12:53,243 INFO L93 Difference]: Finished difference Result 20806 states and 29526 transitions. [2023-04-02 06:12:53,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 06:12:53,244 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.214285714285714) internal successors, (73), 13 states have internal predecessors, (73), 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 76 [2023-04-02 06:12:53,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:12:53,270 INFO L225 Difference]: With dead ends: 20806 [2023-04-02 06:12:53,271 INFO L226 Difference]: Without dead ends: 17616 [2023-04-02 06:12:53,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=348, Invalid=1134, Unknown=0, NotChecked=0, Total=1482 [2023-04-02 06:12:53,279 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 5081 mSDsluCounter, 4599 mSDsCounter, 0 mSdLazyCounter, 6184 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5081 SdHoareTripleChecker+Valid, 5453 SdHoareTripleChecker+Invalid, 6263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 6184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:12:53,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5081 Valid, 5453 Invalid, 6263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 6184 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-04-02 06:12:53,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17616 states. [2023-04-02 06:12:55,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17616 to 6196. [2023-04-02 06:12:55,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6196 states, 6190 states have (on average 1.3407108239095316) internal successors, (8299), 6192 states have internal predecessors, (8299), 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) [2023-04-02 06:12:55,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 8302 transitions. [2023-04-02 06:12:55,552 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 8302 transitions. Word has length 76 [2023-04-02 06:12:55,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:12:55,553 INFO L495 AbstractCegarLoop]: Abstraction has 6196 states and 8302 transitions. [2023-04-02 06:12:55,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.214285714285714) internal successors, (73), 13 states have internal predecessors, (73), 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) [2023-04-02 06:12:55,553 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 8302 transitions. [2023-04-02 06:12:55,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-02 06:12:55,560 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:55,560 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] [2023-04-02 06:12:55,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:12:55,561 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:12:55,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:55,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1687843210, now seen corresponding path program 1 times [2023-04-02 06:12:55,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:55,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764576389] [2023-04-02 06:12:55,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:55,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:57,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:57,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:12:57,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:57,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764576389] [2023-04-02 06:12:57,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764576389] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:12:57,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:12:57,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:12:57,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352117125] [2023-04-02 06:12:57,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:12:57,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:12:57,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:57,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:12:57,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:12:57,864 INFO L87 Difference]: Start difference. First operand 6196 states and 8302 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 13 states have internal predecessors, (73), 1 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)