/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.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:06:09,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:06:09,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:06:09,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:06:09,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:06:09,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:06:09,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:06:09,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:06:09,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:06:09,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:06:09,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:06:09,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:06:09,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:06:09,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:06:09,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:06:09,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:06:09,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:06:09,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:06:09,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:06:09,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:06:09,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:06:09,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:06:09,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:06:09,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:06:09,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 06:06:09,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 06:06:09,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 06:06:09,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 06:06:09,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 06:06:09,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 06:06:09,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:06:09,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:06:09,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:06:09,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:06:09,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:06:09,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:06:09,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:06:09,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:06:09,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:06:09,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:06:09,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:06:09,179 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 06:06:09,197 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:06:09,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:06:09,198 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:06:09,198 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:06:09,199 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:06:09,199 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:06:09,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:06:09,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:06:09,200 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:06:09,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:06:09,200 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:06:09,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:06:09,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:06:09,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:06:09,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:06:09,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:06:09,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:06:09,201 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:06:09,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:06:09,201 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:06:09,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:06:09,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:06:09,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:06:09,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:06:09,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:06:09,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:06:09,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:06:09,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:06:09,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:06:09,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:06:09,203 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:06:09,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:06:09,203 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:06:09,203 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:06:09,203 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:06:09,203 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:06:09,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:06:09,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:06:09,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:06:09,523 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:06:09,525 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:06:09,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-04-02 06:06:10,878 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:06:11,306 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:06:11,307 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-04-02 06:06:11,346 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8407c92e/3b9c89cc16064afe9ee4b2a2298f8ac4/FLAGc2c1303b7 [2023-04-02 06:06:11,362 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8407c92e/3b9c89cc16064afe9ee4b2a2298f8ac4 [2023-04-02 06:06:11,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:06:11,367 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:06:11,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:06:11,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:06:11,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:06:11,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:06:11" (1/1) ... [2023-04-02 06:06:11,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c1c0e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:06:11, skipping insertion in model container [2023-04-02 06:06:11,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:06:11" (1/1) ... [2023-04-02 06:06:11,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:06:11,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:06:11,941 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12460,12473] [2023-04-02 06:06:12,016 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19746,19759] [2023-04-02 06:06:12,027 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22098,22111] [2023-04-02 06:06:12,047 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23218,23231] [2023-04-02 06:06:12,074 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26768,26781] [2023-04-02 06:06:12,079 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27891,27904] [2023-04-02 06:06:12,104 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30206,30219] [2023-04-02 06:06:12,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:06:12,555 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:06:12,617 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12460,12473] [2023-04-02 06:06:12,643 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19746,19759] [2023-04-02 06:06:12,656 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22098,22111] [2023-04-02 06:06:12,662 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23218,23231] [2023-04-02 06:06:12,677 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26768,26781] [2023-04-02 06:06:12,684 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27891,27904] [2023-04-02 06:06:12,695 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30206,30219] [2023-04-02 06:06:12,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:06:13,008 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:06:13,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:06:13 WrapperNode [2023-04-02 06:06:13,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:06:13,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:06:13,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:06:13,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:06:13,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:06:13" (1/1) ... [2023-04-02 06:06:13,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:06:13" (1/1) ... [2023-04-02 06:06:13,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:06:13" (1/1) ... [2023-04-02 06:06:13,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:06:13" (1/1) ... [2023-04-02 06:06:13,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:06:13" (1/1) ... [2023-04-02 06:06:13,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:06:13" (1/1) ... [2023-04-02 06:06:13,222 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:06:13" (1/1) ... [2023-04-02 06:06:13,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:06:13" (1/1) ... [2023-04-02 06:06:13,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:06:13,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:06:13,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:06:13,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:06:13,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:06:13" (1/1) ... [2023-04-02 06:06:13,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:06:13,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:06:13,321 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 06:06:13,336 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 06:06:13,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:06:13,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:06:13,363 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:06:13,363 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:06:13,363 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:06:13,364 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:06:13,364 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:06:13,364 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:06:13,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:06:13,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:06:13,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:06:13,364 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:06:13,364 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:06:13,364 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:06:13,364 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:06:13,365 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:06:13,365 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:06:13,365 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:06:13,365 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:06:13,365 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:06:13,365 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:06:13,365 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:06:13,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:06:13,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:06:13,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:06:13,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:06:13,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:06:13,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:06:13,758 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:06:13,760 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:06:16,551 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:06:16,576 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:06:16,577 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:06:16,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:06:16 BoogieIcfgContainer [2023-04-02 06:06:16,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:06:16,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:06:16,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:06:16,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:06:16,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:06:11" (1/3) ... [2023-04-02 06:06:16,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d05602e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:06:16, skipping insertion in model container [2023-04-02 06:06:16,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:06:13" (2/3) ... [2023-04-02 06:06:16,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d05602e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:06:16, skipping insertion in model container [2023-04-02 06:06:16,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:06:16" (3/3) ... [2023-04-02 06:06:16,593 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-04-02 06:06:16,614 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:06:16,614 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-04-02 06:06:16,700 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:06:16,707 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;@24cad190, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:06:16,707 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-04-02 06:06:16,717 INFO L276 IsEmpty]: Start isEmpty. Operand has 1111 states, 1099 states have (on average 1.8844404003639672) internal successors, (2071), 1106 states have internal predecessors, (2071), 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 06:06:16,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 06:06:16,738 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:16,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:06:16,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:06:16,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:16,755 INFO L85 PathProgramCache]: Analyzing trace with hash -542428736, now seen corresponding path program 1 times [2023-04-02 06:06:16,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:16,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862803583] [2023-04-02 06:06:16,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:16,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:19,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:19,413 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 06:06:19,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:19,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862803583] [2023-04-02 06:06:19,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862803583] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:19,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:19,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:06:19,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247791928] [2023-04-02 06:06:19,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:19,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:06:19,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:19,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:06:19,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:06:19,454 INFO L87 Difference]: Start difference. First operand has 1111 states, 1099 states have (on average 1.8844404003639672) internal successors, (2071), 1106 states have internal predecessors, (2071), 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 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:06:30,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:30,897 INFO L93 Difference]: Finished difference Result 1794 states and 3268 transitions. [2023-04-02 06:06:30,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:06:30,901 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-02 06:06:30,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:30,919 INFO L225 Difference]: With dead ends: 1794 [2023-04-02 06:06:30,919 INFO L226 Difference]: Without dead ends: 1000 [2023-04-02 06:06:30,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:06:30,929 INFO L413 NwaCegarLoop]: 1068 mSDtfsCounter, 5058 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 2135 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5058 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:30,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5058 Valid, 1274 Invalid, 2156 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 2135 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-04-02 06:06:30,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2023-04-02 06:06:31,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 992. [2023-04-02 06:06:31,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 982 states have (on average 1.3380855397148677) internal successors, (1314), 988 states have internal predecessors, (1314), 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 06:06:31,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1317 transitions. [2023-04-02 06:06:31,032 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1317 transitions. Word has length 68 [2023-04-02 06:06:31,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:31,032 INFO L495 AbstractCegarLoop]: Abstraction has 992 states and 1317 transitions. [2023-04-02 06:06:31,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:06:31,033 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1317 transitions. [2023-04-02 06:06:31,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-02 06:06:31,036 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:31,037 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 06:06:31,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:06:31,037 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:06:31,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:31,038 INFO L85 PathProgramCache]: Analyzing trace with hash 632583344, now seen corresponding path program 1 times [2023-04-02 06:06:31,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:31,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330522664] [2023-04-02 06:06:31,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:31,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:32,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:33,006 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 06:06:33,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:33,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330522664] [2023-04-02 06:06:33,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330522664] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:33,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:33,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:06:33,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456379276] [2023-04-02 06:06:33,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:33,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:06:33,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:33,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:06:33,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:06:33,024 INFO L87 Difference]: Start difference. First operand 992 states and 1317 transitions. 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 06:06:40,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:40,752 INFO L93 Difference]: Finished difference Result 1699 states and 2313 transitions. [2023-04-02 06:06:40,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:06:40,753 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 06:06:40,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:40,759 INFO L225 Difference]: With dead ends: 1699 [2023-04-02 06:06:40,759 INFO L226 Difference]: Without dead ends: 1135 [2023-04-02 06:06:40,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:06:40,762 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 3114 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3114 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:40,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3114 Valid, 713 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-04-02 06:06:40,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2023-04-02 06:06:40,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1127. [2023-04-02 06:06:40,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1117 states have (on average 1.3384064458370635) internal successors, (1495), 1123 states have internal predecessors, (1495), 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 06:06:40,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1498 transitions. [2023-04-02 06:06:40,829 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1498 transitions. Word has length 69 [2023-04-02 06:06:40,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:40,830 INFO L495 AbstractCegarLoop]: Abstraction has 1127 states and 1498 transitions. [2023-04-02 06:06:40,830 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 06:06:40,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1498 transitions. [2023-04-02 06:06:40,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-02 06:06:40,834 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:40,834 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 06:06:40,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:06:40,835 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:06:40,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:40,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1397971091, now seen corresponding path program 1 times [2023-04-02 06:06:40,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:40,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228214550] [2023-04-02 06:06:40,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:40,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:42,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:42,626 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 06:06:42,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:42,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228214550] [2023-04-02 06:06:42,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228214550] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:42,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:42,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:06:42,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382914024] [2023-04-02 06:06:42,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:42,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:06:42,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:42,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:06:42,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:06:42,629 INFO L87 Difference]: Start difference. First operand 1127 states and 1498 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 06:06:49,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:49,995 INFO L93 Difference]: Finished difference Result 1869 states and 2597 transitions. [2023-04-02 06:06:49,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:06:49,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 69 [2023-04-02 06:06:49,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:50,003 INFO L225 Difference]: With dead ends: 1869 [2023-04-02 06:06:50,003 INFO L226 Difference]: Without dead ends: 1414 [2023-04-02 06:06:50,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:06:50,006 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 518 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:50,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 1585 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-04-02 06:06:50,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2023-04-02 06:06:50,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1404. [2023-04-02 06:06:50,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1394 states have (on average 1.3565279770444763) internal successors, (1891), 1400 states have internal predecessors, (1891), 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 06:06:50,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 1894 transitions. [2023-04-02 06:06:50,090 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 1894 transitions. Word has length 69 [2023-04-02 06:06:50,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:50,091 INFO L495 AbstractCegarLoop]: Abstraction has 1404 states and 1894 transitions. [2023-04-02 06:06:50,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 06:06:50,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 1894 transitions. [2023-04-02 06:06:50,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-02 06:06:50,094 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:50,094 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 06:06:50,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:06:50,094 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:06:50,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:50,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1126469630, now seen corresponding path program 1 times [2023-04-02 06:06:50,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:50,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769620025] [2023-04-02 06:06:50,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:50,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:51,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:51,811 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 06:06:51,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:51,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769620025] [2023-04-02 06:06:51,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769620025] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:51,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:51,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:06:51,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838719478] [2023-04-02 06:06:51,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:51,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:06:51,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:51,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:06:51,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:06:51,819 INFO L87 Difference]: Start difference. First operand 1404 states and 1894 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 06:06:59,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:59,156 INFO L93 Difference]: Finished difference Result 2839 states and 3978 transitions. [2023-04-02 06:06:59,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:06:59,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 69 [2023-04-02 06:06:59,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:59,164 INFO L225 Difference]: With dead ends: 2839 [2023-04-02 06:06:59,165 INFO L226 Difference]: Without dead ends: 2045 [2023-04-02 06:06:59,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:06:59,181 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 497 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:59,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 1645 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-04-02 06:06:59,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2023-04-02 06:06:59,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 2037. [2023-04-02 06:06:59,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2037 states, 2027 states have (on average 1.3778983719782931) internal successors, (2793), 2033 states have internal predecessors, (2793), 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 06:06:59,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 2796 transitions. [2023-04-02 06:06:59,293 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 2796 transitions. Word has length 69 [2023-04-02 06:06:59,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:59,295 INFO L495 AbstractCegarLoop]: Abstraction has 2037 states and 2796 transitions. [2023-04-02 06:06:59,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 06:06:59,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 2796 transitions. [2023-04-02 06:06:59,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-02 06:06:59,298 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:59,298 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 06:06:59,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:06:59,298 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 06:06:59,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:59,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1559883487, now seen corresponding path program 1 times [2023-04-02 06:06:59,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:59,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689323358] [2023-04-02 06:06:59,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:59,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:00,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:07:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:00,934 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 06:07:00,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:07:00,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689323358] [2023-04-02 06:07:00,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689323358] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:07:00,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:07:00,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:07:00,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867901442] [2023-04-02 06:07:00,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:07:00,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:07:00,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:07:00,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:07:00,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:07:00,937 INFO L87 Difference]: Start difference. First operand 2037 states and 2796 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 06:07:09,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:07:09,503 INFO L93 Difference]: Finished difference Result 4116 states and 5745 transitions. [2023-04-02 06:07:09,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:07:09,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 69 [2023-04-02 06:07:09,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:07:09,524 INFO L225 Difference]: With dead ends: 4116 [2023-04-02 06:07:09,524 INFO L226 Difference]: Without dead ends: 2854 [2023-04-02 06:07:09,528 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 06:07:09,529 INFO L413 NwaCegarLoop]: 1243 mSDtfsCounter, 768 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:07:09,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1907 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-04-02 06:07:09,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2023-04-02 06:07:09,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 2840. [2023-04-02 06:07:09,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2840 states, 2830 states have (on average 1.36113074204947) internal successors, (3852), 2836 states have internal predecessors, (3852), 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 06:07:09,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2840 states to 2840 states and 3855 transitions. [2023-04-02 06:07:09,695 INFO L78 Accepts]: Start accepts. Automaton has 2840 states and 3855 transitions. Word has length 69 [2023-04-02 06:07:09,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:07:09,695 INFO L495 AbstractCegarLoop]: Abstraction has 2840 states and 3855 transitions. [2023-04-02 06:07:09,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 06:07:09,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2840 states and 3855 transitions. [2023-04-02 06:07:09,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-02 06:07:09,700 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:07:09,700 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 06:07:09,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:07:09,701 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:07:09,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:07:09,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1263007095, now seen corresponding path program 1 times [2023-04-02 06:07:09,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:07:09,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927910706] [2023-04-02 06:07:09,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:07:09,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:07:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:11,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:07:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:11,377 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 06:07:11,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:07:11,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927910706] [2023-04-02 06:07:11,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927910706] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:07:11,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:07:11,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:07:11,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925740482] [2023-04-02 06:07:11,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:07:11,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:07:11,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:07:11,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:07:11,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:07:11,380 INFO L87 Difference]: Start difference. First operand 2840 states and 3855 transitions. 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 06:07:17,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:07:17,003 INFO L93 Difference]: Finished difference Result 5882 states and 8134 transitions. [2023-04-02 06:07:17,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:07:17,004 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 06:07:17,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:07:17,019 INFO L225 Difference]: With dead ends: 5882 [2023-04-02 06:07:17,019 INFO L226 Difference]: Without dead ends: 3482 [2023-04-02 06:07:17,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:07:17,027 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 2835 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2835 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:07:17,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2835 Valid, 675 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-04-02 06:07:17,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2023-04-02 06:07:17,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 3465. [2023-04-02 06:07:17,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3465 states, 3455 states have (on average 1.3745296671490594) internal successors, (4749), 3461 states have internal predecessors, (4749), 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 06:07:17,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3465 states to 3465 states and 4752 transitions. [2023-04-02 06:07:17,273 INFO L78 Accepts]: Start accepts. Automaton has 3465 states and 4752 transitions. Word has length 69 [2023-04-02 06:07:17,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:07:17,273 INFO L495 AbstractCegarLoop]: Abstraction has 3465 states and 4752 transitions. [2023-04-02 06:07:17,274 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 06:07:17,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3465 states and 4752 transitions. [2023-04-02 06:07:17,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 06:07:17,277 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:07:17,277 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 06:07:17,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:07:17,277 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 06:07:17,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:07:17,277 INFO L85 PathProgramCache]: Analyzing trace with hash 2086961870, now seen corresponding path program 1 times [2023-04-02 06:07:17,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:07:17,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205061271] [2023-04-02 06:07:17,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:07:17,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:07:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:18,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:07:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:18,785 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 06:07:18,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:07:18,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205061271] [2023-04-02 06:07:18,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205061271] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:07:18,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:07:18,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:07:18,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568493735] [2023-04-02 06:07:18,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:07:18,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:07:18,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:07:18,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:07:18,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:07:18,787 INFO L87 Difference]: Start difference. First operand 3465 states and 4752 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 06:07:23,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:07:23,349 INFO L93 Difference]: Finished difference Result 8815 states and 12318 transitions. [2023-04-02 06:07:23,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:07:23,361 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 06:07:23,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:07:23,377 INFO L225 Difference]: With dead ends: 8815 [2023-04-02 06:07:23,377 INFO L226 Difference]: Without dead ends: 5577 [2023-04-02 06:07:23,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:07:23,383 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 2500 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2500 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:07:23,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2500 Valid, 605 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-02 06:07:23,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5577 states. [2023-04-02 06:07:23,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5577 to 5569. [2023-04-02 06:07:23,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5569 states, 5559 states have (on average 1.3959345205972298) internal successors, (7760), 5565 states have internal predecessors, (7760), 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 06:07:23,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5569 states to 5569 states and 7763 transitions. [2023-04-02 06:07:23,761 INFO L78 Accepts]: Start accepts. Automaton has 5569 states and 7763 transitions. Word has length 70 [2023-04-02 06:07:23,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:07:23,761 INFO L495 AbstractCegarLoop]: Abstraction has 5569 states and 7763 transitions. [2023-04-02 06:07:23,761 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 06:07:23,761 INFO L276 IsEmpty]: Start isEmpty. Operand 5569 states and 7763 transitions. [2023-04-02 06:07:23,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:07:23,768 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:07:23,768 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 06:07:23,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:07:23,768 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:07:23,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:07:23,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1851533709, now seen corresponding path program 1 times [2023-04-02 06:07:23,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:07:23,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678315530] [2023-04-02 06:07:23,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:07:23,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:07:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:25,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:07:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:25,135 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 06:07:25,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:07:25,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678315530] [2023-04-02 06:07:25,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678315530] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:07:25,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:07:25,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:07:25,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692790433] [2023-04-02 06:07:25,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:07:25,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:07:25,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:07:25,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:07:25,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:07:25,142 INFO L87 Difference]: Start difference. First operand 5569 states and 7763 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 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 06:07:30,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:07:30,568 INFO L93 Difference]: Finished difference Result 14891 states and 20847 transitions. [2023-04-02 06:07:30,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:07:30,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 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 71 [2023-04-02 06:07:30,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:07:30,599 INFO L225 Difference]: With dead ends: 14891 [2023-04-02 06:07:30,599 INFO L226 Difference]: Without dead ends: 9777 [2023-04-02 06:07:30,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:07:30,608 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 511 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:07:30,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 1376 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-02 06:07:30,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9777 states. [2023-04-02 06:07:31,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9777 to 9742. [2023-04-02 06:07:31,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9742 states, 9732 states have (on average 1.382963419646527) internal successors, (13459), 9738 states have internal predecessors, (13459), 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 06:07:31,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9742 states to 9742 states and 13462 transitions. [2023-04-02 06:07:31,328 INFO L78 Accepts]: Start accepts. Automaton has 9742 states and 13462 transitions. Word has length 71 [2023-04-02 06:07:31,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:07:31,329 INFO L495 AbstractCegarLoop]: Abstraction has 9742 states and 13462 transitions. [2023-04-02 06:07:31,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 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 06:07:31,330 INFO L276 IsEmpty]: Start isEmpty. Operand 9742 states and 13462 transitions. [2023-04-02 06:07:31,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 06:07:31,338 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:07:31,338 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] [2023-04-02 06:07:31,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:07:31,338 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:07:31,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:07:31,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1018408981, now seen corresponding path program 1 times [2023-04-02 06:07:31,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:07:31,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495624393] [2023-04-02 06:07:31,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:07:31,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:07:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:32,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:07:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:33,012 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 06:07:33,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:07:33,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495624393] [2023-04-02 06:07:33,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495624393] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:07:33,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:07:33,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:07:33,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361264941] [2023-04-02 06:07:33,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:07:33,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:07:33,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:07:33,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:07:33,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:07:33,014 INFO L87 Difference]: Start difference. First operand 9742 states and 13462 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:07:39,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:07:39,854 INFO L93 Difference]: Finished difference Result 34954 states and 48737 transitions. [2023-04-02 06:07:39,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:07:39,855 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-02 06:07:39,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:07:39,937 INFO L225 Difference]: With dead ends: 34954 [2023-04-02 06:07:39,938 INFO L226 Difference]: Without dead ends: 30229 [2023-04-02 06:07:39,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:07:39,954 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 4502 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4502 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:07:39,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4502 Valid, 1085 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-02 06:07:39,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30229 states. [2023-04-02 06:07:41,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30229 to 9770. [2023-04-02 06:07:41,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9770 states, 9760 states have (on average 1.3826844262295082) internal successors, (13495), 9766 states have internal predecessors, (13495), 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 06:07:41,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9770 states to 9770 states and 13498 transitions. [2023-04-02 06:07:41,233 INFO L78 Accepts]: Start accepts. Automaton has 9770 states and 13498 transitions. Word has length 72 [2023-04-02 06:07:41,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:07:41,234 INFO L495 AbstractCegarLoop]: Abstraction has 9770 states and 13498 transitions. [2023-04-02 06:07:41,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:07:41,234 INFO L276 IsEmpty]: Start isEmpty. Operand 9770 states and 13498 transitions. [2023-04-02 06:07:41,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 06:07:41,240 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:07:41,241 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 06:07:41,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:07:41,241 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 06:07:41,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:07:41,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1559875875, now seen corresponding path program 1 times [2023-04-02 06:07:41,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:07:41,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062992127] [2023-04-02 06:07:41,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:07:41,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:07:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:42,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:07:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:42,937 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 06:07:42,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:07:42,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062992127] [2023-04-02 06:07:42,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062992127] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:07:42,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:07:42,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:07:42,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908086787] [2023-04-02 06:07:42,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:07:42,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:07:42,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:07:42,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:07:42,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:07:42,939 INFO L87 Difference]: Start difference. First operand 9770 states and 13498 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:07:55,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:07:55,252 INFO L93 Difference]: Finished difference Result 38589 states and 54138 transitions. [2023-04-02 06:07:55,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:07:55,252 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-02 06:07:55,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:07:55,358 INFO L225 Difference]: With dead ends: 38589 [2023-04-02 06:07:55,359 INFO L226 Difference]: Without dead ends: 34313 [2023-04-02 06:07:55,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:07:55,384 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 3387 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 1704 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3387 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 1814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:07:55,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3387 Valid, 1256 Invalid, 1814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1704 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-04-02 06:07:55,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34313 states. [2023-04-02 06:07:57,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34313 to 9841. [2023-04-02 06:07:57,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9841 states, 9831 states have (on average 1.382768792594853) internal successors, (13594), 9837 states have internal predecessors, (13594), 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 06:07:57,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9841 states to 9841 states and 13597 transitions. [2023-04-02 06:07:57,512 INFO L78 Accepts]: Start accepts. Automaton has 9841 states and 13597 transitions. Word has length 72 [2023-04-02 06:07:57,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:07:57,512 INFO L495 AbstractCegarLoop]: Abstraction has 9841 states and 13597 transitions. [2023-04-02 06:07:57,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:07:57,513 INFO L276 IsEmpty]: Start isEmpty. Operand 9841 states and 13597 transitions. [2023-04-02 06:07:57,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 06:07:57,523 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:07:57,523 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 06:07:57,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:07:57,524 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:07:57,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:07:57,524 INFO L85 PathProgramCache]: Analyzing trace with hash 884980512, now seen corresponding path program 1 times [2023-04-02 06:07:57,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:07:57,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493424994] [2023-04-02 06:07:57,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:07:57,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:07:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:59,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:07:59,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:59,342 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 06:07:59,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:07:59,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493424994] [2023-04-02 06:07:59,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493424994] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:07:59,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:07:59,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:07:59,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674814537] [2023-04-02 06:07:59,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:07:59,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:07:59,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:07:59,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:07:59,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:07:59,344 INFO L87 Difference]: Start difference. First operand 9841 states and 13597 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:08:14,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:08:14,671 INFO L93 Difference]: Finished difference Result 48647 states and 68564 transitions. [2023-04-02 06:08:14,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:08:14,671 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-02 06:08:14,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:08:14,801 INFO L225 Difference]: With dead ends: 48647 [2023-04-02 06:08:14,801 INFO L226 Difference]: Without dead ends: 44996 [2023-04-02 06:08:14,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:08:14,829 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 5098 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5098 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:08:14,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5098 Valid, 1147 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-04-02 06:08:14,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44996 states. [2023-04-02 06:08:17,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44996 to 9909. [2023-04-02 06:08:17,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9909 states, 9899 states have (on average 1.3821598141226386) internal successors, (13682), 9905 states have internal predecessors, (13682), 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 06:08:17,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9909 states to 9909 states and 13685 transitions. [2023-04-02 06:08:17,162 INFO L78 Accepts]: Start accepts. Automaton has 9909 states and 13685 transitions. Word has length 72 [2023-04-02 06:08:17,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:08:17,163 INFO L495 AbstractCegarLoop]: Abstraction has 9909 states and 13685 transitions. [2023-04-02 06:08:17,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:08:17,163 INFO L276 IsEmpty]: Start isEmpty. Operand 9909 states and 13685 transitions. [2023-04-02 06:08:17,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 06:08:17,172 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:08:17,172 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 06:08:17,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:08:17,172 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:08:17,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:08:17,173 INFO L85 PathProgramCache]: Analyzing trace with hash -71820575, now seen corresponding path program 1 times [2023-04-02 06:08:17,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:08:17,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379415122] [2023-04-02 06:08:17,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:08:17,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:08:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:08:18,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:08:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:08:19,018 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 06:08:19,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:08:19,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379415122] [2023-04-02 06:08:19,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379415122] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:08:19,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:08:19,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:08:19,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973689107] [2023-04-02 06:08:19,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:08:19,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:08:19,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:08:19,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:08:19,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:08:19,021 INFO L87 Difference]: Start difference. First operand 9909 states and 13685 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:08:34,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:08:34,908 INFO L93 Difference]: Finished difference Result 44562 states and 62630 transitions. [2023-04-02 06:08:34,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:08:34,909 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-02 06:08:34,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:08:35,014 INFO L225 Difference]: With dead ends: 44562 [2023-04-02 06:08:35,015 INFO L226 Difference]: Without dead ends: 39920 [2023-04-02 06:08:35,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:08:35,041 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 4661 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4661 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 1533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:08:35,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4661 Valid, 1130 Invalid, 1533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-04-02 06:08:35,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39920 states. [2023-04-02 06:08:37,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39920 to 10072. [2023-04-02 06:08:37,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10072 states, 10062 states have (on average 1.3811369509043927) internal successors, (13897), 10068 states have internal predecessors, (13897), 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 06:08:37,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10072 states to 10072 states and 13900 transitions. [2023-04-02 06:08:37,760 INFO L78 Accepts]: Start accepts. Automaton has 10072 states and 13900 transitions. Word has length 72 [2023-04-02 06:08:37,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:08:37,760 INFO L495 AbstractCegarLoop]: Abstraction has 10072 states and 13900 transitions. [2023-04-02 06:08:37,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:08:37,761 INFO L276 IsEmpty]: Start isEmpty. Operand 10072 states and 13900 transitions. [2023-04-02 06:08:37,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 06:08:37,770 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:08:37,770 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 06:08:37,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:08:37,770 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:08:37,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:08:37,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1109244007, now seen corresponding path program 1 times [2023-04-02 06:08:37,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:08:37,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65905687] [2023-04-02 06:08:37,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:08:37,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:08:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:08:39,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:08:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:08:39,861 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 06:08:39,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:08:39,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65905687] [2023-04-02 06:08:39,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65905687] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:08:39,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:08:39,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:08:39,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357577512] [2023-04-02 06:08:39,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:08:39,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:08:39,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:08:39,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:08:39,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:08:39,863 INFO L87 Difference]: Start difference. First operand 10072 states and 13900 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 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 06:08:54,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:08:54,110 INFO L93 Difference]: Finished difference Result 32735 states and 46147 transitions. [2023-04-02 06:08:54,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:08:54,114 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 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 06:08:54,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:08:54,176 INFO L225 Difference]: With dead ends: 32735 [2023-04-02 06:08:54,177 INFO L226 Difference]: Without dead ends: 26284 [2023-04-02 06:08:54,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:08:54,198 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 2996 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2996 SdHoareTripleChecker+Valid, 2028 SdHoareTripleChecker+Invalid, 2212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:08:54,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2996 Valid, 2028 Invalid, 2212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2171 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-04-02 06:08:54,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26284 states. [2023-04-02 06:08:56,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26284 to 10048. [2023-04-02 06:08:57,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10048 states, 10038 states have (on average 1.3805538951982466) internal successors, (13858), 10044 states have internal predecessors, (13858), 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 06:08:57,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10048 states to 10048 states and 13861 transitions. [2023-04-02 06:08:57,029 INFO L78 Accepts]: Start accepts. Automaton has 10048 states and 13861 transitions. Word has length 73 [2023-04-02 06:08:57,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:08:57,029 INFO L495 AbstractCegarLoop]: Abstraction has 10048 states and 13861 transitions. [2023-04-02 06:08:57,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 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 06:08:57,029 INFO L276 IsEmpty]: Start isEmpty. Operand 10048 states and 13861 transitions. [2023-04-02 06:08:57,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 06:08:57,038 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:08:57,038 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 06:08:57,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:08:57,038 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:08:57,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:08:57,039 INFO L85 PathProgramCache]: Analyzing trace with hash 154423823, now seen corresponding path program 1 times [2023-04-02 06:08:57,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:08:57,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506408710] [2023-04-02 06:08:57,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:08:57,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:08:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:08:58,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:08:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:08:58,927 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 06:08:58,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:08:58,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506408710] [2023-04-02 06:08:58,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506408710] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:08:58,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:08:58,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:08:58,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904948817] [2023-04-02 06:08:58,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:08:58,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:08:58,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:08:58,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:08:58,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:08:58,930 INFO L87 Difference]: Start difference. First operand 10048 states and 13861 transitions. Second operand has 8 states, 7 states have (on average 10.0) internal successors, (70), 6 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 06:09:16,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:09:16,001 INFO L93 Difference]: Finished difference Result 38898 states and 54536 transitions. [2023-04-02 06:09:16,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:09:16,002 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.0) internal successors, (70), 6 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 06:09:16,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:09:16,079 INFO L225 Difference]: With dead ends: 38898 [2023-04-02 06:09:16,079 INFO L226 Difference]: Without dead ends: 34608 [2023-04-02 06:09:16,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:09:16,098 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 3379 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 1700 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3379 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 1810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:09:16,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3379 Valid, 1256 Invalid, 1810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1700 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-04-02 06:09:16,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34608 states. [2023-04-02 06:09:18,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34608 to 10139. [2023-04-02 06:09:18,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10139 states, 10129 states have (on average 1.3807878369039392) internal successors, (13986), 10135 states have internal predecessors, (13986), 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 06:09:18,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10139 states to 10139 states and 13989 transitions. [2023-04-02 06:09:18,720 INFO L78 Accepts]: Start accepts. Automaton has 10139 states and 13989 transitions. Word has length 73 [2023-04-02 06:09:18,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:09:18,720 INFO L495 AbstractCegarLoop]: Abstraction has 10139 states and 13989 transitions. [2023-04-02 06:09:18,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.0) internal successors, (70), 6 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 06:09:18,721 INFO L276 IsEmpty]: Start isEmpty. Operand 10139 states and 13989 transitions. [2023-04-02 06:09:18,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 06:09:18,729 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:18,729 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 06:09:18,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:09:18,729 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:09:18,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:18,729 INFO L85 PathProgramCache]: Analyzing trace with hash 59021073, now seen corresponding path program 1 times [2023-04-02 06:09:18,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:18,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707705461] [2023-04-02 06:09:18,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:18,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:20,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:09:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:20,603 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 06:09:20,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:09:20,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707705461] [2023-04-02 06:09:20,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707705461] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:09:20,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:09:20,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:09:20,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116891195] [2023-04-02 06:09:20,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:09:20,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:09:20,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:09:20,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:09:20,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:09:20,605 INFO L87 Difference]: Start difference. First operand 10139 states and 13989 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 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 06:09:33,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:09:33,308 INFO L93 Difference]: Finished difference Result 32632 states and 45975 transitions. [2023-04-02 06:09:33,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:09:33,309 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 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 06:09:33,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:09:33,350 INFO L225 Difference]: With dead ends: 32632 [2023-04-02 06:09:33,350 INFO L226 Difference]: Without dead ends: 26205 [2023-04-02 06:09:33,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:09:33,365 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 3691 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3691 SdHoareTripleChecker+Valid, 2203 SdHoareTripleChecker+Invalid, 2408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:09:33,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3691 Valid, 2203 Invalid, 2408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-04-02 06:09:33,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26205 states. [2023-04-02 06:09:35,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26205 to 10127. [2023-04-02 06:09:35,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10127 states, 10117 states have (on average 1.3800533755065731) internal successors, (13962), 10123 states have internal predecessors, (13962), 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 06:09:35,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10127 states to 10127 states and 13965 transitions. [2023-04-02 06:09:35,961 INFO L78 Accepts]: Start accepts. Automaton has 10127 states and 13965 transitions. Word has length 73 [2023-04-02 06:09:35,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:09:35,961 INFO L495 AbstractCegarLoop]: Abstraction has 10127 states and 13965 transitions. [2023-04-02 06:09:35,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 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 06:09:35,962 INFO L276 IsEmpty]: Start isEmpty. Operand 10127 states and 13965 transitions. [2023-04-02 06:09:35,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 06:09:35,967 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:35,967 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 06:09:35,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:09:35,968 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:09:35,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:35,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1227875656, now seen corresponding path program 1 times [2023-04-02 06:09:35,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:35,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377388802] [2023-04-02 06:09:35,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:35,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:37,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:09:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:37,684 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 06:09:37,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:09:37,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377388802] [2023-04-02 06:09:37,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377388802] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:09:37,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:09:37,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:09:37,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405871627] [2023-04-02 06:09:37,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:09:37,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:09:37,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:09:37,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:09:37,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:09:37,686 INFO L87 Difference]: Start difference. First operand 10127 states and 13965 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 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 06:09:51,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:09:51,129 INFO L93 Difference]: Finished difference Result 30568 states and 42985 transitions. [2023-04-02 06:09:51,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:09:51,130 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 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 06:09:51,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:09:51,174 INFO L225 Difference]: With dead ends: 30568 [2023-04-02 06:09:51,175 INFO L226 Difference]: Without dead ends: 23893 [2023-04-02 06:09:51,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:09:51,195 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 4001 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 2074 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4001 SdHoareTripleChecker+Valid, 1975 SdHoareTripleChecker+Invalid, 2113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:09:51,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4001 Valid, 1975 Invalid, 2113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2074 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-04-02 06:09:51,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23893 states. [2023-04-02 06:09:54,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23893 to 9992. [2023-04-02 06:09:54,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9992 states, 9982 states have (on average 1.379783610498898) internal successors, (13773), 9988 states have internal predecessors, (13773), 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 06:09:54,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9992 states to 9992 states and 13776 transitions. [2023-04-02 06:09:54,672 INFO L78 Accepts]: Start accepts. Automaton has 9992 states and 13776 transitions. Word has length 73 [2023-04-02 06:09:54,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:09:54,672 INFO L495 AbstractCegarLoop]: Abstraction has 9992 states and 13776 transitions. [2023-04-02 06:09:54,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 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 06:09:54,673 INFO L276 IsEmpty]: Start isEmpty. Operand 9992 states and 13776 transitions. [2023-04-02 06:09:54,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 06:09:54,681 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:54,681 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 06:09:54,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:09:54,682 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:09:54,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:54,682 INFO L85 PathProgramCache]: Analyzing trace with hash 156461822, now seen corresponding path program 1 times [2023-04-02 06:09:54,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:54,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900373517] [2023-04-02 06:09:54,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:54,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:56,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:09:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:56,708 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 06:09:56,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:09:56,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900373517] [2023-04-02 06:09:56,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900373517] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:09:56,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:09:56,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:09:56,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086530966] [2023-04-02 06:09:56,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:09:56,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:09:56,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:09:56,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:09:56,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:09:56,711 INFO L87 Difference]: Start difference. First operand 9992 states and 13776 transitions. Second operand has 9 states, 8 states have (on average 8.75) internal successors, (70), 7 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)